Loading form input values from web pages into URLRequest?

Question

How would I pull out the form values for the html source below and add them to an NSURLConnection?

<tr>
                            <th><label for="username"><span class="accesskey">N</span>etID:</label></th>
                            <td><input id="username" name="username" class="required" tabindex="1" accesskey="n" type="text" value="" size="32" autocomplete="false"/></td>
                        </tr><tr>
                            <th><label for="password"><span class="accesskey">P</span>assword:</label></th>
                            <td><input id="password" name="password" class="required" tabindex="2" accesskey="p" type="password" value="" size="32"/></td>
                        </tr><tr>
                            <th><label for="authenticationType"><span class="accesskey">A</span>uthentication Type:</label></th>
                            <td>
                               <select id="authenticationType" name="authenticationType">
                                  <option value="Kerberos">Default</option>
                                  <option value="SafeWord">SafeWord</option>
                               </select>
                            </td>
                        </tr><tr>
                            <th></th>
                            <td>
                                <input type="checkbox" id="warn" name="warn" value="true" tabindex="3" />
                                <label for="warn" class="other" accesskey="w"><span class="accesskey">W</span>arn me before logging me into other sites.</label>
                            </td>
                        </tr><tr>
                            <th></th>
                            <td>
                                <input type="hidden" name="_currentStateId" value="" />
                                <input type="hidden" name="_eventId" value="submit" />
                                <input type="submit" accesskey="l" value="LOGIN" tabindex="4" />
                            </td>
                        </tr>

Answer 1

I used elementParser. Thanks!

Answer 2

If you know the HTML is also valid XML, you can run the whole thing through an NSXMLParser (or other XML-parsing code) and perform some action whenever it detects an element that is a form input (such as <input>).

Otherwise, you might be better off just writing your own string-parsing function(s) - look for any instance of the tag you want to grab, pull all the text between the < and > characters, split it by spaces, and then find the name of the input field so you can put it into an NSURLConnection.