1 | // |
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2 | // HTMLForm.h |
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3 | // |
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4 | // $Id: //poco/1.3/Net/include/Poco/Net/HTMLForm.h#1 $ |
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5 | // |
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6 | // Library: Net |
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7 | // Package: HTML |
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8 | // Module: HTMLForm |
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9 | // |
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10 | // Definition of the HTMLForm class. |
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11 | // |
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12 | // Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH. |
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13 | // and Contributors. |
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14 | // |
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15 | // Permission is hereby granted, free of charge, to any person or organization |
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16 | // obtaining a copy of the software and accompanying documentation covered by |
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17 | // this license (the "Software") to use, reproduce, display, distribute, |
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18 | // execute, and transmit the Software, and to prepare derivative works of the |
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19 | // Software, and to permit third-parties to whom the Software is furnished to |
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20 | // do so, all subject to the following: |
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21 | // |
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22 | // The copyright notices in the Software and this entire statement, including |
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23 | // the above license grant, this restriction and the following disclaimer, |
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24 | // must be included in all copies of the Software, in whole or in part, and |
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25 | // all derivative works of the Software, unless such copies or derivative |
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26 | // works are solely in the form of machine-executable object code generated by |
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27 | // a source language processor. |
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28 | // |
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29 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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30 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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31 | // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
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32 | // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
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33 | // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
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34 | // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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35 | // DEALINGS IN THE SOFTWARE. |
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36 | // |
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37 | |
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38 | |
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39 | #ifndef Net_HTMLForm_INCLUDED |
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40 | #define Net_HTMLForm_INCLUDED |
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41 | |
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42 | |
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43 | #include "Poco/Net/Net.h" |
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44 | #include "Poco/Net/NameValueCollection.h" |
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45 | #include <ostream> |
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46 | #include <istream> |
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47 | #include <vector> |
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48 | |
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49 | |
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50 | namespace Poco { |
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51 | namespace Net { |
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52 | |
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53 | |
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54 | class HTTPRequest; |
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55 | class PartHandler; |
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56 | class PartSource; |
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57 | |
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58 | |
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59 | class Net_API HTMLForm: public NameValueCollection |
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60 | /// HTMLForm is a helper class for working with HTML forms, |
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61 | /// both on the client and on the server side. |
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62 | { |
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63 | public: |
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64 | HTMLForm(); |
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65 | /// Creates an empty HTMLForm and sets the |
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66 | /// encoding to "application/x-www-form-urlencoded". |
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67 | |
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68 | explicit HTMLForm(const std::string& encoding); |
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69 | /// Creates an empty HTMLForm that uses |
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70 | /// the given encoding. |
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71 | /// |
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72 | /// Encoding must be either "application/x-www-form-urlencoded" |
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73 | /// (which is the default) or "multipart/form-data". |
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74 | |
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75 | HTMLForm(const HTTPRequest& request, std::istream& requestBody, PartHandler& handler); |
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76 | /// Creates a HTMLForm from the given HTTP request. |
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77 | /// |
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78 | /// Uploaded files are passed to the given PartHandler. |
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79 | |
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80 | HTMLForm(const HTTPRequest& request, std::istream& requestBody); |
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81 | /// Creates a HTMLForm from the given HTTP request. |
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82 | /// |
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83 | /// Uploaded files are silently discarded. |
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84 | |
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85 | explicit HTMLForm(const HTTPRequest& request); |
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86 | /// Creates a HTMLForm from the given HTTP request. |
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87 | /// |
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88 | /// The request must be a GET request and the form data |
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89 | /// must be in the query string (URL encoded). |
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90 | /// |
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91 | /// For POST requests, you must use one of the constructors |
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92 | /// taking an additional input stream for the request body. |
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93 | |
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94 | ~HTMLForm(); |
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95 | /// Destroys the HTMLForm. |
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96 | |
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97 | void setEncoding(const std::string& encoding); |
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98 | /// Sets the encoding used for posting the form. |
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99 | /// |
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100 | /// Encoding must be either "application/x-www-form-urlencoded" |
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101 | /// (which is the default) or "multipart/form-data". |
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102 | |
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103 | const std::string& getEncoding() const; |
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104 | /// Returns the encoding used for posting the form. |
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105 | |
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106 | void addPart(const std::string& name, PartSource* pSource); |
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107 | /// Adds an part/attachment (file upload) to the form. |
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108 | /// |
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109 | /// The form takes ownership of the PartSource and deletes it |
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110 | /// when it is no longer needed. |
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111 | /// |
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112 | /// The part will only be sent if the encoding |
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113 | /// set for the form is "multipart/form-data" |
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114 | |
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115 | void load(const HTTPRequest& request, std::istream& requestBody, PartHandler& handler); |
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116 | /// Reads the form data from the given HTTP request. |
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117 | /// |
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118 | /// Uploaded files are passed to the given PartHandler. |
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119 | |
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120 | void load(const HTTPRequest& request, std::istream& requestBody); |
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121 | /// Reads the form data from the given HTTP request. |
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122 | /// |
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123 | /// Uploaded files are silently discarded. |
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124 | |
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125 | void load(const HTTPRequest& request); |
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126 | /// Reads the form data from the given HTTP request. |
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127 | /// |
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128 | /// The request must be a GET request and the form data |
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129 | /// must be in the query string (URL encoded). |
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130 | /// |
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131 | /// For POST requests, you must use one of the overloads |
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132 | /// taking an additional input stream for the request body. |
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133 | |
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134 | void read(std::istream& istr, PartHandler& handler); |
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135 | /// Reads the form data from the given input stream. |
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136 | /// |
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137 | /// The form data read from the stream must be |
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138 | /// in the encoding specified for the form. |
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139 | |
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140 | void prepareSubmit(HTTPRequest& request); |
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141 | /// Fills out the request object for submitting the form. |
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142 | /// |
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143 | /// If the request method is GET, the encoded form is appended to the |
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144 | /// request URI as query string. Otherwise (the method is |
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145 | /// POST), the form's content type is set to the form's encoding. |
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146 | /// The form's parameters must be written to the |
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147 | /// request body separately, with a call to write. |
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148 | /// If the request's HTTP version is HTTP/1.0: |
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149 | /// - persistent connections are disabled |
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150 | /// - the content transfer encoding is set to identity encoding |
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151 | /// Otherwise, if the request's HTTP version is HTTP/1.1: |
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152 | /// - the request's persistent connection state is left unchanged |
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153 | /// - the content transfer encoding is set to chunked |
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154 | |
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155 | void write(std::ostream& ostr, const std::string& boundary); |
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156 | /// Writes the form data to the given output stream, |
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157 | /// using the specified encoding. |
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158 | |
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159 | void write(std::ostream& ostr); |
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160 | /// Writes the form data to the given output stream, |
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161 | /// using the specified encoding. |
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162 | |
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163 | const std::string& boundary() const; |
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164 | /// Returns the MIME boundary used for writing |
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165 | /// multipart form data. |
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166 | |
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167 | static const std::string ENCODING_URL; /// "application/x-www-form-urlencoded" |
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168 | static const std::string ENCODING_MULTIPART; /// "multipart/form-data" |
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169 | |
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170 | protected: |
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171 | void readUrl(std::istream& istr); |
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172 | void readMultipart(std::istream& istr, PartHandler& handler); |
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173 | void writeUrl(std::ostream& ostr); |
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174 | void writeMultipart(std::ostream& ostr); |
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175 | |
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176 | private: |
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177 | HTMLForm(const HTMLForm&); |
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178 | HTMLForm& operator = (const HTMLForm&); |
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179 | |
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180 | struct Part |
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181 | { |
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182 | std::string name; |
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183 | PartSource* pSource; |
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184 | }; |
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185 | |
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186 | typedef std::vector<Part> PartVec; |
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187 | |
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188 | std::string _encoding; |
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189 | std::string _boundary; |
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190 | PartVec _parts; |
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191 | }; |
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192 | |
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193 | |
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194 | // |
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195 | // inlines |
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196 | // |
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197 | inline const std::string& HTMLForm::getEncoding() const |
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198 | { |
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199 | return _encoding; |
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200 | } |
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201 | |
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202 | |
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203 | inline const std::string& HTMLForm::boundary() const |
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204 | { |
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205 | return _boundary; |
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206 | } |
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207 | |
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208 | |
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209 | } } // namespace Poco::Net |
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210 | |
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211 | |
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212 | #endif // Net_HTMLForm_INCLUDED |
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