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<div id="overview"><a href="../../../../../../../apidocs/edu/internet2/middleware/shibboleth/wayf/plugins/Plugin.html">View Javadoc</a></div><pre>
<a class="jxr_linenumber" name="1" href="#1">1</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="2" href="#2">2</a> <em class="jxr_javadoccomment"> * Copyright [2006] [University Corporation for Advanced Internet Development, Inc.]</em>
<a class="jxr_linenumber" name="3" href="#3">3</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a> <em class="jxr_javadoccomment"> * Licensed under the Apache License, Version 2.0 (the "License");</em>
<a class="jxr_linenumber" name="5" href="#5">5</a> <em class="jxr_javadoccomment"> * you may not use this file except in compliance with the License.</em>
<a class="jxr_linenumber" name="6" href="#6">6</a> <em class="jxr_javadoccomment"> * You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="7" href="#7">7</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a> <em class="jxr_javadoccomment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a> <em class="jxr_javadoccomment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a> <em class="jxr_javadoccomment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a class="jxr_linenumber" name="12" href="#12">12</a> <em class="jxr_javadoccomment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a class="jxr_linenumber" name="13" href="#13">13</a> <em class="jxr_javadoccomment"> * See the License for the specific language governing permissions and</em>
<a class="jxr_linenumber" name="14" href="#14">14</a> <em class="jxr_javadoccomment"> * limitations under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a> <strong class="jxr_keyword">package</strong> edu.internet2.middleware.shibboleth.wayf.plugins;
<a class="jxr_linenumber" name="17" href="#17">17</a>
<a class="jxr_linenumber" name="18" href="#18">18</a> <strong class="jxr_keyword">import</strong> java.util.Collection;
<a class="jxr_linenumber" name="19" href="#19">19</a> <strong class="jxr_keyword">import</strong> java.util.List;
<a class="jxr_linenumber" name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> java.util.Map;
<a class="jxr_linenumber" name="21" href="#21">21</a>
<a class="jxr_linenumber" name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> javax.servlet.http.HttpServletRequest;
<a class="jxr_linenumber" name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> javax.servlet.http.HttpServletResponse;
<a class="jxr_linenumber" name="24" href="#24">24</a>
<a class="jxr_linenumber" name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> org.opensaml.saml2.metadata.provider.MetadataProvider;
<a class="jxr_linenumber" name="26" href="#26">26</a>
<a class="jxr_linenumber" name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> edu.internet2.middleware.shibboleth.wayf.IdPSite;
<a class="jxr_linenumber" name="28" href="#28">28</a>
<a class="jxr_linenumber" name="29" href="#29">29</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="30" href="#30">30</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="31" href="#31">31</a> <em class="jxr_javadoccomment"> * The Plugin interface is used to affect the 'hints' that the WAYF offers to the users. </em>
<a class="jxr_linenumber" name="32" href="#32">32</a> <em class="jxr_javadoccomment"> * <p></em>
<a class="jxr_linenumber" name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * The WAYF can register any number of plugins. Each plugin is called when the metadata is loaded or realoaded</em>
<a class="jxr_linenumber" name="34" href="#34">34</a> <em class="jxr_javadoccomment"> * (so it can do any indexing) and at the three entry points into the WAYF - Lookup (main entry), Search and Select.</em>
<a class="jxr_linenumber" name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * Plugins are called in the order in which they are declared to the WAYF. </em>
<a class="jxr_linenumber" name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * <p></em>
<a class="jxr_linenumber" name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * Each plugin is called once when the user has made a selection.</em>
<a class="jxr_linenumber" name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * <p></em>
<a class="jxr_linenumber" name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * For Search and Lookup, each plugin is called multiple times, once for each metadata provider which has </em>
<a class="jxr_linenumber" name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * been declared to this particular WAYF instance. The plugin can return a context which is handed to subsequent calls.</em>
<a class="jxr_linenumber" name="41" href="#41">41</a> <em class="jxr_javadoccomment"> * <p></em>
<a class="jxr_linenumber" name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * The idea is that each plugin can affect the displayed lists of IdPs. As a reminder the WAYF displays two lists of </em>
<a class="jxr_linenumber" name="43" href="#43">43</a> <em class="jxr_javadoccomment"> * IdPs - the complete list, displayed either as a single list or a list of lists, and the hint list (which was</em>
<a class="jxr_linenumber" name="44" href="#44">44</a> <em class="jxr_javadoccomment"> * previously only populated from the _saml_idp cookie. In the search case the WAYF displays a third list of</em>
<a class="jxr_linenumber" name="45" href="#45">45</a> <em class="jxr_javadoccomment"> * the search hits. </em>
<a class="jxr_linenumber" name="46" href="#46">46</a> <em class="jxr_javadoccomment"> * <p></em>
<a class="jxr_linenumber" name="47" href="#47">47</a> <em class="jxr_javadoccomment"> * When the plugin in called it is given the current set of potential IdPs as a Map from EntityID to {@link IdPSite}</em>
<a class="jxr_linenumber" name="48" href="#48">48</a> <em class="jxr_javadoccomment"> * and lists representing the current hint list and search results. A Plugin can remove an entry from </em>
<a class="jxr_linenumber" name="49" href="#49">49</a> <em class="jxr_javadoccomment"> * the map or the lists. Additionally it can insert an IdPSite found in the Map into the hint or search lists.</em>
<a class="jxr_linenumber" name="50" href="#50">50</a> <em class="jxr_javadoccomment"> * Thus the plugin can restrict the number of sites that the WAYF instance displays in the 'complete list' and</em>
<a class="jxr_linenumber" name="51" href="#51">51</a> <em class="jxr_javadoccomment"> * can add or remove IdPs from the hint list.</em>
<a class="jxr_linenumber" name="52" href="#52">52</a> <em class="jxr_javadoccomment"> * <p></em>
<a class="jxr_linenumber" name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * At any stage the plugin can take control of the current request and redirect or forward it. It signals that</em>
<a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * it has done this to the WAYF by means of an exception.</em>
<a class="jxr_linenumber" name="55" href="#55">55</a> <em class="jxr_javadoccomment"> * <p> </em>
<a class="jxr_linenumber" name="56" href="#56">56</a> <em class="jxr_javadoccomment"> * The _saml_idp cookie handling code is written as a WAYF plugin. Other plugins have been written to allow IdPs</em>
<a class="jxr_linenumber" name="57" href="#57">57</a> <em class="jxr_javadoccomment"> * to be presented as hints based on the client's IP address or to redirect back to the SP once the choice of</em>
<a class="jxr_linenumber" name="58" href="#58">58</a> <em class="jxr_javadoccomment"> * IdP has been made.</em>
<a class="jxr_linenumber" name="59" href="#59">59</a> <em class="jxr_javadoccomment"> * <p></em>
<a class="jxr_linenumber" name="60" href="#60">60</a> <em class="jxr_javadoccomment"> * Object implementing this interface are created during WAYF discovery service initialization. There are </em>
<a class="jxr_linenumber" name="61" href="#61">61</a> <em class="jxr_javadoccomment"> * expected to implement a constructor which takes a {@link org.w3c.dom.Element} as the only parameter and they are </em>
<a class="jxr_linenumber" name="62" href="#62">62</a> <em class="jxr_javadoccomment"> * created via this constructor, with the parameter being the appropriate section of the WAYF configuration file </em>
<a class="jxr_linenumber" name="63" href="#63">63</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="64" href="#64">64</a> <em class="jxr_javadoccomment"> * @version Discussion</em>
<a class="jxr_linenumber" name="65" href="#65">65</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="66" href="#66">66</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="67" href="#67">67</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">interface</strong> <a href="../../../../../../edu/internet2/middleware/shibboleth/wayf/plugins/Plugin.html">Plugin</a> {
<a class="jxr_linenumber" name="68" href="#68">68</a>
<a class="jxr_linenumber" name="69" href="#69">69</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="70" href="#70">70</a> <em class="jxr_javadoccomment"> * Whenever the WAYF discoveres that the metadata is stale, it reloads it and calls each plugin at this method.</em>
<a class="jxr_linenumber" name="71" href="#71">71</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="72" href="#72">72</a> <em class="jxr_javadoccomment"> * @param metadata - where to get the data from.</em>
<a class="jxr_linenumber" name="73" href="#73">73</a> <em class="jxr_javadoccomment"> * @return the value which will be provided as input to subsequent calls to {@link #lookup Lookup} and </em>
<a class="jxr_linenumber" name="74" href="#74">74</a> <em class="jxr_javadoccomment"> * {@link #search Search}</em>
<a class="jxr_linenumber" name="75" href="#75">75</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="76" href="#76">76</a> <a href="../../../../../../edu/internet2/middleware/shibboleth/wayf/plugins/PluginMetadataParameter.html">PluginMetadataParameter</a> refreshMetadata(MetadataProvider metadata);
<a class="jxr_linenumber" name="77" href="#77">77</a>
<a class="jxr_linenumber" name="78" href="#78">78</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="79" href="#79">79</a> <em class="jxr_javadoccomment"> * The WAYF calls each plugin at this entry point when it is first contacted. </em>
<a class="jxr_linenumber" name="80" href="#80">80</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="81" href="#81">81</a> <em class="jxr_javadoccomment"> * @param req - Describes the current request. A Plugin might use it to find any appropriate cookies </em>
<a class="jxr_linenumber" name="82" href="#82">82</a> <em class="jxr_javadoccomment"> * @param res - Describes the current response. A Plugin might use it to redirect a the request. </em>
<a class="jxr_linenumber" name="83" href="#83">83</a> <em class="jxr_javadoccomment"> * @param parameter Describes the metadata.</em>
<a class="jxr_linenumber" name="84" href="#84">84</a> <em class="jxr_javadoccomment"> * @param context Any processing context returned from a previous call.</em>
<a class="jxr_linenumber" name="85" href="#85">85</a> <em class="jxr_javadoccomment"> * @param validIdps The list of IdPs which is currently views as possibly matches for the pattern. </em>
<a class="jxr_linenumber" name="86" href="#86">86</a> <em class="jxr_javadoccomment"> * The Key is the EntityId for the IdP and the value the object which describes </em>
<a class="jxr_linenumber" name="87" href="#87">87</a> <em class="jxr_javadoccomment"> * the Idp </em>
<a class="jxr_linenumber" name="88" href="#88">88</a> <em class="jxr_javadoccomment"> * @param idpList The set of Idps which are currently considered as potential hints. </em>
<a class="jxr_linenumber" name="89" href="#89">89</a> <em class="jxr_javadoccomment"> * @return a context to hand to subsequent calls</em>
<a class="jxr_linenumber" name="90" href="#90">90</a> <em class="jxr_javadoccomment"> * @throws WayfRequestHandled if the plugin has handled the request (for instance it has</em>
<a class="jxr_linenumber" name="91" href="#91">91</a> <em class="jxr_javadoccomment"> * issues a redirect)</em>
<a class="jxr_linenumber" name="92" href="#92">92</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="93" href="#93">93</a> <em class="jxr_javadoccomment"> * Each plugin is called multiple times,</em>
<a class="jxr_linenumber" name="94" href="#94">94</a> <em class="jxr_javadoccomment"> * once for each metadata provider which is registered (Depending on the precise configuration of the WAYF</em>
<a class="jxr_linenumber" name="95" href="#95">95</a> <em class="jxr_javadoccomment"> * metadata providers whose metadata does not include the target may be dropped). Initially the plugin is</em>
<a class="jxr_linenumber" name="96" href="#96">96</a> <em class="jxr_javadoccomment"> * called with a context parameter of <code>null</code>. In subsequent calls, the value returned from</em>
<a class="jxr_linenumber" name="97" href="#97">97</a> <em class="jxr_javadoccomment"> * the previous call is passed in as the context parameter. </em>
<a class="jxr_linenumber" name="98" href="#98">98</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="99" href="#99">99</a> <em class="jxr_javadoccomment"> * The plugin may remove IdPSite objects from the validIdps list.</em>
<a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment"> * The plugin may add or remove them to the idpList. IdPSite Objects which are to be added to the idpList </em>
<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment"> * should be looked up by EntityIdName in validIdps by EntityId. Hence any metadata processing shoudl </em>
<a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_javadoccomment"> * store the entityID. </em>
<a class="jxr_linenumber" name="104" href="#104">104</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="106" href="#106">106</a> <a href="../../../../../../edu/internet2/middleware/shibboleth/wayf/plugins/PluginContext.html">PluginContext</a> lookup(HttpServletRequest req,
<a class="jxr_linenumber" name="107" href="#107">107</a> HttpServletResponse res,
<a class="jxr_linenumber" name="108" href="#108">108</a> <a href="../../../../../../edu/internet2/middleware/shibboleth/wayf/plugins/PluginMetadataParameter.html">PluginMetadataParameter</a> parameter,
<a class="jxr_linenumber" name="109" href="#109">109</a> Map<String, IdPSite> validIdps,
<a class="jxr_linenumber" name="110" href="#110">110</a> <a href="../../../../../../edu/internet2/middleware/shibboleth/wayf/plugins/PluginContext.html">PluginContext</a> context,
<a class="jxr_linenumber" name="111" href="#111">111</a> List<IdPSite> idpList) <strong class="jxr_keyword">throws</strong> WayfRequestHandled;
<a class="jxr_linenumber" name="112" href="#112">112</a>
<a class="jxr_linenumber" name="113" href="#113">113</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="114" href="#114">114</a> <em class="jxr_javadoccomment"> * This method is called when the user specified a search operation. The processing is similar to </em>
<a class="jxr_linenumber" name="115" href="#115">115</a> <em class="jxr_javadoccomment"> * that described for {@link #lookup lookup}.</em>
<a class="jxr_linenumber" name="116" href="#116">116</a> <em class="jxr_javadoccomment"> * Two additional paramaters are provided, the search parameter which was provided, and the current </em>
<a class="jxr_linenumber" name="117" href="#117">117</a> <em class="jxr_javadoccomment"> * proposed list of candidate IdPs. The plugin is at liberty to alter both the list of hints and the </em>
<a class="jxr_linenumber" name="118" href="#118">118</a> <em class="jxr_javadoccomment"> * list of valid IdPs. </em>
<a class="jxr_linenumber" name="119" href="#119">119</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="120" href="#120">120</a> <em class="jxr_javadoccomment"> * @param req Describes the current request. The Plugin could use it to find any appropriate cookies </em>
<a class="jxr_linenumber" name="121" href="#121">121</a> <em class="jxr_javadoccomment"> * @param res Describes the result - this is needed if (for instance) a plung needs to change cookie values</em>
<a class="jxr_linenumber" name="122" href="#122">122</a> <em class="jxr_javadoccomment"> * @param parameter Describes the metadata</em>
<a class="jxr_linenumber" name="123" href="#123">123</a> <em class="jxr_javadoccomment"> * @param pattern The Search pattern provided</em>
<a class="jxr_linenumber" name="124" href="#124">124</a> <em class="jxr_javadoccomment"> * @param validIdps The list of IdPs which is currently views as possibly matches for the pattern. </em>
<a class="jxr_linenumber" name="125" href="#125">125</a> <em class="jxr_javadoccomment"> * The Key is the Idp Name an the value the idp</em>
<a class="jxr_linenumber" name="126" href="#126">126</a> <em class="jxr_javadoccomment"> * @param context Any processing context returned from a previous call.</em>
<a class="jxr_linenumber" name="127" href="#127">127</a> <em class="jxr_javadoccomment"> * @param searchResult the resukt of any search</em>
<a class="jxr_linenumber" name="128" href="#128">128</a> <em class="jxr_javadoccomment"> * @param idpList The set of Idps which are currently considered as potential hints. Each Idp is associated</em>
<a class="jxr_linenumber" name="129" href="#129">129</a> <em class="jxr_javadoccomment"> * with a numeric weight, where the lower the number is the more likely the IdP is to be a candidate. </em>
<a class="jxr_linenumber" name="130" href="#130">130</a> <em class="jxr_javadoccomment"> * As descibed above the WAYF uses this to provide hint list to the GUI (or even to dispatch </em>
<a class="jxr_linenumber" name="131" href="#131">131</a> <em class="jxr_javadoccomment"> * immediately to the IdP). </em>
<a class="jxr_linenumber" name="132" href="#132">132</a> <em class="jxr_javadoccomment"> * @return a context to hand to subsequent calls</em>
<a class="jxr_linenumber" name="133" href="#133">133</a> <em class="jxr_javadoccomment"> * @throws WayfRequestHandled if the plugin has handled the request (for instance it has</em>
<a class="jxr_linenumber" name="134" href="#134">134</a> <em class="jxr_javadoccomment"> * issues a redirect)</em>
<a class="jxr_linenumber" name="135" href="#135">135</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="136" href="#136">136</a> <a href="../../../../../../edu/internet2/middleware/shibboleth/wayf/plugins/PluginContext.html">PluginContext</a> search(HttpServletRequest req,
<a class="jxr_linenumber" name="137" href="#137">137</a> HttpServletResponse res,
<a class="jxr_linenumber" name="138" href="#138">138</a> <a href="../../../../../../edu/internet2/middleware/shibboleth/wayf/plugins/PluginMetadataParameter.html">PluginMetadataParameter</a> parameter,
<a class="jxr_linenumber" name="139" href="#139">139</a> String pattern,
<a class="jxr_linenumber" name="140" href="#140">140</a> Map<String, IdPSite> validIdps,
<a class="jxr_linenumber" name="141" href="#141">141</a> <a href="../../../../../../edu/internet2/middleware/shibboleth/wayf/plugins/PluginContext.html">PluginContext</a> context,
<a class="jxr_linenumber" name="142" href="#142">142</a> Collection<IdPSite> searchResult,
<a class="jxr_linenumber" name="143" href="#143">143</a> List<IdPSite> idpList) <strong class="jxr_keyword">throws</strong> WayfRequestHandled;
<a class="jxr_linenumber" name="144" href="#144">144</a>
<a class="jxr_linenumber" name="145" href="#145">145</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="146" href="#146">146</a> <em class="jxr_javadoccomment"> * This method is called, for every plugin, after a user has selected an IdP. The plugin is expected </em>
<a class="jxr_linenumber" name="147" href="#147">147</a> <em class="jxr_javadoccomment"> * to use it to update any in memory state (via the {@link PluginMetadataParameter} parameter or permananent </em>
<a class="jxr_linenumber" name="148" href="#148">148</a> <em class="jxr_javadoccomment"> * state (for instance by writing back a cookie.</em>
<a class="jxr_linenumber" name="149" href="#149">149</a> <em class="jxr_javadoccomment"> * @param req Describes the current request. </em>
<a class="jxr_linenumber" name="150" href="#150">150</a> <em class="jxr_javadoccomment"> * @param res Describes the current response</em>
<a class="jxr_linenumber" name="151" href="#151">151</a> <em class="jxr_javadoccomment"> * @param parameter Describes the metadata</em>
<a class="jxr_linenumber" name="152" href="#152">152</a> <em class="jxr_javadoccomment"> * @throws WayfRequestHandled if the plugin has handled the request (for instance it has</em>
<a class="jxr_linenumber" name="153" href="#153">153</a> <em class="jxr_javadoccomment"> * issues a redirect)</em>
<a class="jxr_linenumber" name="154" href="#154">154</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="155" href="#155">155</a> <strong class="jxr_keyword">void</strong> selected(HttpServletRequest req,
<a class="jxr_linenumber" name="156" href="#156">156</a> HttpServletResponse res,
<a class="jxr_linenumber" name="157" href="#157">157</a> <a href="../../../../../../edu/internet2/middleware/shibboleth/wayf/plugins/PluginMetadataParameter.html">PluginMetadataParameter</a> parameter,
<a class="jxr_linenumber" name="158" href="#158">158</a> String idP) <strong class="jxr_keyword">throws</strong> WayfRequestHandled;
<a class="jxr_linenumber" name="159" href="#159">159</a> }
</pre>
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