index.php

   1 <?php
   2
   3 abstract class cms {
   4
   5   private $config_file = '/etc/dylansserver.ini';
   6   protected $db;
   7   protected $recaptcha_publickey;
   8   protected $recaptcha_privatekey;
   9   protected  $scripts;
  10   public $title;
  11   public $home_link;
  12
  13   public function __construct() {
  14     $config = parse_ini_file($this->config_file, true);
  15     $this->db = new mysqli(
  16       $config[database]['domain'],
  17       $config[database]['user'],
  18       $config[database]['password'],
  19       $config[database]['database']);
  20     if (mysqli_connect_errno()) {
  21       echo "Problem connecting to database: ";
  22       echo mysqli_connect_error();
  23       exit();
  24     }
  25     $this->recaptcha_publickey = $config['recaptcha']['publickey'];
  26     $this->recaptcha_privatekey = $config['recaptcha']['privatekey'];
  27     $this->title = $config['site']['default_title'];
  28     $this->home_link = $config['site']['home_link'];
  29     ob_start();
  30   }
  31
  32   public static function determine_type() {
  33     if (isset($_GET['page']) && is_numeric($_GET['page'])) {
  34       return 'page';
  35     } else if (isset($_GET['year'])) {
  36       return 'archive';
  37     } else if (isset($_GET['note'])) {
  38       return 'note';
  39     } else if ($_SERVER['REQUEST_URI'] == '/') {
  40       return 'index';
  41     } else if (isset($_GET['project'])) {
  42       return 'project';
  43         } else if (isset($_GET['rss'])) {
  44           return 'rss';
  45         } else if (isset($_GET['challenge'])) {
  46       return 'captcha';
  47     }
  48   }
  49
  50   public function query() {
  51     $args = func_get_args();
  52     $statement = $this->db->prepare($args[0]);
  53     $args = array_slice($args, 1);
  54     call_user_func_array(array($statement, 'bind_param'), &$args);
  55     $statement->execute();
  56     $return = array();
  57     $statement->store_result();
  58     $row = array();
  59     $data = $statement->result_metadata();
  60     $fields = array();
  61     $fields[0] = &$statement;
  62     while($field = $data->fetch_field()) {
  63       $fields[] = &$row[$field->name];
  64     }
  65     call_user_func_array("mysqli_stmt_bind_result", $fields);
  66     $i = 0;
  67     while ($statement->fetch()) {
  68         foreach ($row as $key=>$value) $return[$i][$key] = $value;
  69       $i++;
  70     }
  71     $statement->free_result();
  72     return $return;
  73       }
  74
  75   public function display_head($title = "dylansserver",
  76                                   $home_link = "/") {
  77     $scripts = $this->scripts;
  78     $stylesheets = "<link href='/includes/style.css' rel='stylesheet' type='text/css'>";
  79     $home_link = "http://validator.w3.org/unicorn/check?ucn_uri=dylansserver.com&amp;ucn_task=conformance#";
  80     echo <<<END_OF_HEAD
  81 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
  82 "http://www.w3.org/TR/html4/loose.dtd">
  83
  84 <html>
  85 <head>
  86   <meta name="generator" content=
  87   "HTML Tidy for Linux (vers 25 March 2009), see www.w3.org">
  88   <meta http-equiv="Content-type" content="text/html;charset=UTF-8">
  89
  90   <title>$this->title</title>
  91   <link rel="icon" href="/favicon.ico" type="image/png">
  92   $stylesheets
  93   $scripts
  94 </head>
  95
  96 <body onload="return typeof highlight == 'function' ? highlight() : true;">
  97   <div id="structure">
  98     <div id="banner">
  99       <a href="$this->home_link">
 100       <img src="/images/dylansserver.png" alt="dylansserver"
 101       border="0"></a>
 102     </div>
 103
 104     <div id="content">
 105 END_OF_HEAD;
 106   }
 107
 108   public function display_contact() {
 109     echo <<<END_OF_CONTACT
 110       <div id="contact_me"><h1><a href=
 111       "mailto:dylan@psu.edu">dylan</a></h1><a href=
 112       "mailto:dylan@psu.edu">@psu.edu</a>
 113       </div>
 114 END_OF_CONTACT;
 115   }
 116
 117   public function display_close($show_contact = true) {
 118     if ($show_contact) {
 119       $this->display_contact();
 120     }
 121     echo <<<END_OF_CLOSE
 122     </div>
 123     <br>
 124     <br>
 125   </div>
 126 </body>
 127 </html>
 128 END_OF_CLOSE;
 129     ob_flush();
 130     }
 131
 132 }
 133
 134
 135 class index extends cms {
 136
 137   public function display() {
 138     $this->scripts = "<script type='text/javascript' src='/includes/index.js'></script>";
 139     $this->display_head();
 140     $this->display_exhibits();
 141     echo "<ul id='portfolio'>";
 142     $this->list_projects();
 143     echo <<<OTHER_PROJECTS
 144         <li>
 145           <h3>things i've done for others:</h3>
 146         </li>
 147
 148         <li><a href=
 149         "http://activehamptons.com">activehamptons.com</a></li>
 150
 151         <li><a href=
 152         "http://transfishing.com">transfishing.com</a></li>
 153
 154         <li>
 155           <h3>something i've worked on:</h3>
 156         </li>
 157
 158         <li><a href=
 159         "http://tempositions.com">tempositions.com</a></li>
 160
 161         <li>
 162           <h3>my repositories:</h3>
 163         </li>
 164
 165         <li><a href=
 166         "git">git://dylansserver.com</a></li>
 167
 168         <li>
 169           <h3>some notes:</h3>
 170         </li>
 171
 172         <li><a href=
 173         "/notes/">here</a> [<a href="/notes/rss">rss</a>]</li>
 174
 175         <li>
 176         </li>
 177 OTHER_PROJECTS;
 178     // Because of the CSS necessary for the animations,
 179     // the contact link needs to be in #portfolio to clear
 180     // the floats.
 181     echo "<li>";
 182     $this->display_contact();
 183     echo "</li>";
 184     echo "</ul>";
 185     $this->display_close($show_contact = false);
 186   }
 187
 188   protected function display_exhibits() {
 189     echo "<div id='exhibit'>";
 190     $sql = "SELECT text FROM projects";
 191     $result = $this->db->query($sql);
 192     while ($entry = $result->fetch_object()) {
 193       echo $entry->text;
 194     }
 195     echo "</div>";
 196   }
 197
 198   private function list_projects() {
 199     echo <<<HEREDOC
 200         <li>
 201           <h3>my projects:</h3>
 202         </li>
 203 HEREDOC;
 204     $sql = "SELECT title FROM projects";
 205     $result = $this->db->query($sql);
 206     while ($entry = $result->fetch_object()) {
 207       echo "<li><a class='tab' href='$entry->title'>$entry->title</a></li>";
 208     }
 209   }
 210
 211 }
 212
 213
 214 class project extends index {
 215
 216   protected function display_exhibits() {
 217     echo "<div id='exhibit'>";
 218     $sql = "SELECT text FROM projects
 219              WHERE title = ?";
 220     $result = $this->query($sql, "s", $_GET['project']);
 221     if ($result = $result[0]['text']) {
 222       $text =  str_replace("class='exhibit'", "class='exhibit' style='display:block;'", $result);
 223       echo $text;
 224       echo "</div>";
 225     } else {
 226       throw new notFound();
 227     }
 228   }
 229
 230 }
 231
 232
 233 class page extends cms {
 234
 235   private $page = 1;
 236   private $offset = 0;
 237   private $notes_per_page = 4;
 238   private $number_of_pages = 1;
 239
 240   public function __construct() {
 241     parent::__construct();
 242     $this->page_offset();
 243     $this->scripts = "
 244         <script type='text/javascript' src='/includes/syntax/scripts/shCore.js'></script>
 245         <script type='text/javascript' src='/includes/syntax/scripts/shAutoloader.js'></script>
 246         <link type='text/css' rel='stylesheet' href='/includes/syntax/styles/shCore.css'>
 247         <link type='text/css' rel='stylesheet' href='/includes/syntax/styles/shThemeDefault.css'>
 248         <script type='text/javascript'>
 249           function highlight() {
 250             SyntaxHighlighter.autoloader(
 251              'js /includes/syntax/scripts/shBrushJScript.js',
 252              'bash /includes/syntax/scripts/shBrushBash.js',
 253              'sql /includes/syntax/scripts/shBrushSql.js',
 254              'cpp /includes/syntax/scripts/shBrushCpp.js');
 255             SyntaxHighlighter.defaults['gutter'] = false;
 256             SyntaxHighlighter.defaults['toolbar'] = false;
 257             SyntaxHighlighter.all();
 258           }
 259         </script>
 260     ";
 261   }
 262
 263   private function page_offset() {
 264     $sql = "SELECT COUNT(*) FROM notes";
 265     $result = $this->db->query($sql);
 266     $result = $result->fetch_array();
 267     $this->number_of_pages = ceil($result[0] / $this->notes_per_page);
 268     if (isset($_GET['page']) && is_numeric($_GET['page'])) {
 269       $this->page = (int) $_GET['page'];
 270     } else {
 271       throw new notFound();
 272     }
 273     if ($this->page > $this->number_of_pages) {
 274       throw new notFound();
 275     }
 276     if ($this->page < 1) {
 277       throw new notFound();
 278     }
 279     $this->offset = ($this->page - 1) * $this->notes_per_page;
 280   }
 281
 282   public function display() {
 283     $this->display_head();
 284     echo "<div id='notes'>";
 285     $sql = "SELECT date_posted, title, url, text
 286               FROM notes ORDER BY date_posted DESC
 287               LIMIT ?, ?";
 288     $result = $this->query($sql, "ii",
 289                               $this->offset,
 290                               $this->notes_per_page);
 291     foreach ($result as $row => $entry) {
 292       $title = $entry['title'];
 293       $url = '/note/' . $entry['url'];
 294       $date_posted =  explode("-", $entry['date_posted']);
 295       $year_posted = $date_posted[0];
 296       $month_posted = $date_posted[1];
 297       $datetime_posted = explode(' ', $date_posted[2]);
 298       $day_posted = $datetime_posted[0];
 299       $text = $entry['text'];
 300       echo <<<END_NOTE
 301       <div class='note'>
 302       <h1>
 303         <span class='date'>$year_posted/$month_posted/$day_posted/</span><a rel="canonical" href='$url'>$title</a>
 304       </h1>
 305       $text
 306       </div>
 307 END_NOTE;
 308     }
 309     echo "</div>";
 310     $this->write_navigation();
 311     $this->display_close();
 312   }
 313
 314   private function write_navigation() {
 315     echo "<div id='navigation'>";
 316     echo "<h1>";
 317     if($this->page > 1){
 318       $previous_page = $this->page - 1;
 319       echo "<a href='/notes/page/$previous_page'>prev</a>";
 320     }
 321     if($this->page < $this->number_of_pages) {
 322     $forward_page = $this->page + 1;
 323     echo " <a href='/notes/page/$forward_page'>next</a>";
 324     }
 325     echo "</h1>";
 326     echo "</div>";
 327   }
 328
 329 }
 330
 331
 332 class note extends cms {
 333
 334   private $id;
 335   private $comments_enabled = false;
 336   private $failed_captcha;
 337   public $url;
 338   public $title;
 339   public $year_posted;
 340   public $month_posted;
 341   public $day_posted;
 342   public $text;
 343   public $number_of_comments;
 344
 345   public function __construct() {
 346       $this->scripts = "
 347         <script type='text/javascript' src='/includes/syntax/scripts/shCore.js'></script>
 348         <script type='text/javascript' src='/includes/syntax/scripts/shAutoloader.js'></script>
 349         <link type='text/css' rel='stylesheet' href='/includes/syntax/styles/shCore.css'>
 350         <link type='text/css' rel='stylesheet' href='/includes/syntax/styles/shThemeDefault.css'>
 351         <script type='text/javascript'>
 352           function highlight() {
 353             SyntaxHighlighter.autoloader(
 354              'js /includes/syntax/scripts/shBrushJScript.js',
 355              'bash /includes/syntax/scripts/shBrushBash.js',
 356              'sql /includes/syntax/scripts/shBrushSql.js',
 357              'cpp /includes/syntax/scripts/shBrushCpp.js');
 358             SyntaxHighlighter.defaults['gutter'] = false;
 359             SyntaxHighlighter.defaults['toolbar'] = false;
 360             SyntaxHighlighter.all();
 361           }
 362         </script>
 363       ";
 364
 365     if (isset($_GET['comments'])) {
 366       $this->scripts .= "
 367         <script type='text/javascript' src='http://www.google.com/recaptcha/api/js/recaptcha_ajax.js'></script>
 368         <script type='text/javascript' src='/includes/comment.js'></script>";
 369     }
 370     parent::__construct();
 371     if (isset($_GET['comments'])) {
 372       $this->comments_enabled = true;
 373     }
 374     $url = htmlspecialchars($_SERVER['REQUEST_URI']);
 375     if (isset($_GET['verify'])) {
 376       $url = substr($url, 0, (strlen($url)-6));
 377     }
 378     $this->url = $url;
 379     $sql = "SELECT title, date_posted, text, id
 380               FROM notes WHERE url = ?";
 381     $result = $this->query($sql, "s",
 382                               $_GET['note']);
 383     if ($result) {
 384       $entry = $result[0];
 385       $this->id = $entry["id"];
 386       $this->title = $entry["title"];
 387       $date_posted =  explode("-", $entry["date_posted"]);
 388       $this->year_posted = $date_posted[0];
 389       $this->month_posted = $date_posted[1];
 390       $datetime_posted = explode(' ', $date_posted[2]);
 391       $this->day_posted = $datetime_posted[0];
 392       $this->text = $entry["text"];
 393     } else {
 394       throw new notFound();
 395     }
 396     $sql = "SELECT COUNT(*) FROM comments
 397               WHERE note = $this->id";
 398     $result = $this->db->query($sql);
 399     $result = $result->fetch_array();
 400     $this->number_of_comments = $result[0];
 401     if (isset($_GET['verify'])) {
 402       $this->verify();
 403     }
 404   }
 405
 406   public function display() {
 407     $this->display_head();
 408     $this->display_note();
 409     if ($this->comments_enabled) {
 410       $this->display_comments();
 411       $this->display_comment_form();
 412     }
 413     $this->write_navigation();
 414     $this->display_close();
 415   }
 416
 417   private function verify() {
 418     if (!isset($_POST['captcha'])) {
 419       require_once('includes/recaptchalib.php');
 420       echo "<br>";
 421       $resp = recaptcha_check_answer ($this->recaptcha_privatekey,
 422                                       $_SERVER["REMOTE_ADDR"],
 423                                       $_POST["recaptcha_challenge_field"],
 424                                       $_POST["recaptcha_response_field"]);
 425       if (!$resp->is_valid) {
 426         $this->failed_captcha = true;
 427       }
 428     }
 429     if (isset($_POST['captcha']) || $resp->is_valid) {
 430       $sql = ("INSERT INTO comments (date_posted, author,
 431                   text, note)
 432                 VALUES(NOW(), ?, ?, ?)");
 433       $stmt = $this->db->prepare($sql);
 434       // Checks are needed here (no blank text,
 435       // and a default author needs to be set
 436       // for no-javascript users.
 437       $stmt->bind_param('sss',
 438                           htmlspecialchars($_POST['name']),
 439                           htmlspecialchars($_POST['text']),
 440                         $this->id);
 441       $stmt->execute();
 442     }
 443   }
 444
 445   private function display_note() {
 446     echo <<<END_OF_NOTE
 447     <div id='note'>
 448     <h1><span class='date'>$this->year_posted/$this->month_posted/$this->day_posted/</span>$this->title</h1>
 449     $this->text
 450     </div>
 451 END_OF_NOTE;
 452   }
 453
 454   private function write_navigation() {
 455     echo <<<END_OF_NAVIGATION
 456     <br><br><br><br>
 457     <div id='navigation'>
 458     <h1>
 459 END_OF_NAVIGATION;
 460     if (!$this->comments_enabled) {
 461       $this->display_comment_link();
 462     }
 463     echo <<<END_OF_NAVIGATION
 464     <a href="/notes/">back to notes/</a>
 465     </h1>
 466     </div>
 467 END_OF_NAVIGATION;
 468   }
 469
 470   private function display_comment_link() {
 471     if ($this->number_of_comments > 0) {
 472       $anchor_text = "comments($this->number_of_comments)/";
 473     } else {
 474       $anchor_text = "comment?";
 475     }
 476     if (substr($this->url, (strlen($this->url)-1), strlen($this->url)) == '/') {
 477       $url = $this->url . 'comments/';
 478     } else {
 479       $url = $this->url . '/comments/';
 480     }
 481     echo "<a id='comment_link' href='$url'>$anchor_text</a>";
 482   }
 483
 484   private function display_comments() {
 485     echo "<div id='comments'>";
 486     $sql= "SELECT date_posted, author, text
 487              FROM comments WHERE note = ?
 488              ORDER BY date_posted DESC";
 489     $result = $this->query($sql, 'd', $this->id);
 490     foreach ($result as $row => $entry) {
 491       $date_posted = $entry['date_posted'];
 492       $author = $entry['author'];
 493       $text = htmlspecialchars($entry['text']);
 494       $head = "<h3>$author</h3>";
 495       echo <<<END_OF_COMMENT
 496       <div class='comment'>
 497       $head
 498       $text
 499       </div>
 500 END_OF_COMMENT;
 501       }
 502     echo "</div>";
 503   }
 504
 505   private function display_comment_form() {
 506     $publickey = $this->recaptcha_publickey;
 507     echo <<<END_CAPTCHA_STYLE
 508 <script type="text/javascript">
 509 Recaptcha.create("$publickey",
 510    "recaptcha_div",
 511    {
 512      theme : 'custom',
 513      custom_theme_widget: 'recaptcha_widget',
 514      callback: Recaptcha.focus_response_field
 515    });
 516 </script>
 517 END_CAPTCHA_STYLE;
 518     require_once('includes/recaptchalib.php');
 519     $url = $this->url . "verify";
 520     echo "<form id='comment_form'  method='post' action='$url'>";
 521     echo <<<END_OF_FORM
 522     <div id="comment">
 523       <h3>comment:</h3>
 524       <textarea rows="10" cols="70" name="text" id="comment_text"></textarea>
 525       <h3>name:</h3>
 526       <input type=text name="name" id="comment_name">
 527
 528       <nowiki>
 529       <div id="recaptcha_widget">
 530         <br>
 531         <h3><b>what's this say</b>?</h3>
 532         <br>
 533           <div id="recaptcha_image"></div>
 534         <br><br><br>
 535         <span class="recaptcha_only_if_image"><br><br><br></span>
 536         <input type="text" id="recaptcha_response_field" name="recaptcha_response_field" />
 537         <br><br>
 538         <h3 class="recaptcha_only_if_audio"><b>enter the numbers you hear</b>:</h3>
 539         <span class="recaptcha_help">
 540           <a href="javascript:Recaptcha.reload()">another?</a> /
 541           <span class="recaptcha_only_if_image"><a href="javascript:Recaptcha.switch_type('audio')">audio?</a> /</span>
 542           <span class="recaptcha_only_if_audio"><a href="javascript:Recaptcha.switch_type('image')">image?</a></span><a href="javascript:Recaptcha.showhelp()">help?</a>
 543         </span>
 544       </div>
 545 END_OF_FORM;
 546     echo recaptcha_get_html($this->recaptcha_publickey);
 547     if ($this->failed_captcha) {
 548     echo <<<END_OF_ERRORS
 549         <div id="not_human">
 550           reCAPTCHA said you're not human, <br>
 551           try again?
 552         </div>
 553         <input id="submit" class="submit" type="submit" value="post comment">
 554         </form>
 555       </div>
 556 END_OF_ERRORS;
 557     } else {
 558       echo <<<END_OF_ERRORS
 559         <div id="not_human">
 560           reCAPTCHA said you're not human, <br>
 561           try again?
 562         </div>
 563         <div id="blank_comment">
 564           but you didn't write anything! <br>
 565         </div>
 566 END_OF_ERRORS;
 567     }
 568     echo <<<END_OF_FORM
 569       <input id="submit" class="submit" type="submit" value="post comment">
 570       </form>
 571       </div>
 572 END_OF_FORM;
 573   }
 574 }
 575
 576
 577 class archive extends cms {
 578
 579   public function __construct() {
 580     parent::__construct();
 581   }
 582
 583   private function check_exists() {
 584     $sql = "SELECT COUNT(*) FROM notes
 585               WHERE url = ?";
 586     $results = $this->query($sql, "s", $_GET['note']);
 587     if ($results[0]["COUNT(*)"] != 1) {
 588       $this->not_found();
 589     }
 590   }
 591
 592   public function display() {
 593     $this->display_head();
 594     switch (true) {
 595       case (isset($_GET['year']) && !isset($_GET['month'])
 596                 && !isset($_GET['day'])):
 597         $sql = "SELECT title, url, date_posted, text
 598                   FROM notes WHERE YEAR(date_posted) = ?
 599                 ORDER BY date_posted DESC";
 600         $result = $this->query($sql, "d",
 601                                   $_GET['year']);
 602         break;
 603       case (isset($_GET['year']) && isset($_GET['month'])
 604                && !isset($_GET['day'])):
 605         $sql = "SELECT title, url, date_posted, text
 606                   FROM notes WHERE YEAR(date_posted) = ?
 607                 AND MONTH(date_posted) = ?
 608                 ORDER BY date_posted DESC";
 609         $result = $this->query($sql, "dd",
 610                                   $_GET['year'], $_GET['month']);
 611         break;
 612       case (isset($_GET['year']) && isset($_GET['month'])
 613               && isset($_GET['day'])):
 614         $sql = "SELECT title, url, date_posted, text
 615                   FROM notes WHERE YEAR(date_posted) = ?
 616                 AND MONTH(date_posted) = ?
 617                 AND DAY(date_posted) = ?
 618                 ORDER BY date_posted DESC";
 619         $result = $this->query($sql, "ddd",
 620                                 $_GET['year'], $_GET['month'],
 621                                 $_GET['day']);
 622         break;
 623     }
 624     if (count($result) >= 1) {
 625       echo "<div id='notes'>";
 626       foreach ($result as $row => $entry) {
 627         $title = $entry['title'];
 628         $url = '/note/' . $entry['url'];
 629         $date_posted =  explode("-", $entry['date_posted']);
 630         $year_posted = $date_posted[0];
 631         $month_posted = $date_posted[1];
 632         $datetime_posted = explode(' ', $date_posted[2]);
 633         $day_posted = $datetime_posted[0];
 634         echo "<div class='note'>";
 635         echo "<h1><span class='date'>";
 636         echo "$year_posted/$month_posted/$day_posted/";
 637         echo "</span><a href='$url'>$title</a></h1>";
 638         echo $entry['text'];
 639         echo "</div>";
 640       }
 641       echo "</div>";
 642       $this->write_navigation();
 643     } else {
 644       echo "<br>";
 645       echo "<h1>sorry, nothing here</h2>";
 646       echo "<pre>Empty set (0.00 sec)</pre>";
 647     }
 648     $this->display_close();
 649   }
 650
 651   private function write_navigation() {
 652     echo "<br>";
 653     echo "<div id='navigation'>";
 654     // fill me in!
 655     echo "</div>";
 656   }
 657
 658 }
 659
 660
 661 class rss extends cms {
 662   public function display() {
 663     $result = $this->db->query("SELECT date_posted, title, text, url
 664                                           FROM notes ORDER BY date_posted DESC
 665                                           LIMIT 5");
 666           echo <<<END_OF_ENTRY
 667           <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
 668       <channel>
 669             <title>dylanstestserver.com/notes/rss</title>
 670                 <link>http://dylanstestserver.com/notes</link>
 671                 <description>dylanstestserver.com/notes/rss</description>
 672                 <atom:link href="http://dylanstestserver.com/notes/rss" rel="self" type="application/rss+xml" />
 673 END_OF_ENTRY;
 674         while ($entry = $result->fetch_object()) {
 675           $title = $entry->title;
 676           $date_posted = $entry->date_posted;
 677           $url = "http://dylanstestserver.com/note/" . $entry->url;
 678           $text = $entry->text;
 679           $text = strip_tags($text);
 680           $end_of_first_sentence = strpos($text, '.');
 681           if ($end_of_first_sentence) {
 682             $end_of_second_sentence = strpos($text, '.', ($end_of_first_sentence + 1));
 683                 if ($end_of_second_sentence) {
 684                   $description = substr($text, '0', ($end_of_second_sentence + 1));
 685                 } else {
 686                   $description = substr($text, '0', ($end_of_first_sentence + 1));
 687                 }
 688           }
 689           echo <<<END_OF_ENTRY
 690             <item>
 691                   <title>$title</title>
 692                   <link>$url</link>
 693                   <guid>$url</guid>
 694                   <description>$description</description>
 695             </item>
 696 END_OF_ENTRY;
 697         }
 698       echo "</channel>";
 699       echo "</rss>";
 700
 701   }
 702 }
 703
 704
 705 class notFound extends Exception {
 706
 707     public function __construct() {
 708       header('HTTP/1.0 404 Not Found');
 709       ob_end_clean();
 710       include('404.php');
 711       exit();
 712     }
 713
 714 }
 715
 716
 717 class captcha extends cms {
 718
 719     public function display() {
 720       $challenge = $_GET['challenge'];
 721       $response = $_GET['response'];
 722       $remoteip = $_SERVER['REMOTE_ADDR'];
 723       $curl = curl_init('http://api-verify.recaptcha.net/verify?');
 724       curl_setopt ($curl, CURLOPT_POST, 4);
 725       curl_setopt ($curl, CURLOPT_POSTFIELDS, "privatekey=$this->recaptcha_privatekey&remoteip=$remoteip&challenge=$challenge&response=$response");
 726       $result = curl_exec ($curl);
 727       curl_close ($curl);
 728     }
 729
 730 }
 731
 732
 733 ## now actually do something:
 734 switch (cms::determine_type()) {
 735   case 'index':
 736     $index = new index();
 737     $index->display();
 738     break;
 739   case 'project':
 740     $project = new project();
 741     $project->display();
 742     break;
 743   case 'note':
 744     $note = new note;
 745     $note->display();
 746     break;
 747   case 'page':
 748     $page = new page;
 749     $page->display();
 750     break;
 751   case "rss":
 752     $rss = new rss();
 753         $rss->display();
 754   case 'archive':
 755     $archive = new archive;
 756         $archive->display();
 757         break;
 758   case "captcha":
 759     $captcha = new captcha;
 760     $captcha->display();
 761     break;
 762 }
 763
 764 ?>