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           <h3>my resume:</h3>
 177         </li>
 178
 179         <li>[<a href=
 180         "/resume">pdf</a>]</li>
 181
 182         <li>
 183         </li>
 184 OTHER_PROJECTS;
 185     // Because of the CSS necessary for the animations,
 186     // the contact link needs to be in #portfolio to clear
 187     // the floats.
 188     echo "<li>";
 189     $this->display_contact();
 190     echo "</li>";
 191     echo "</ul>";
 192     $this->display_close($show_contact = false);
 193   }
 194
 195   protected function display_exhibits() {
 196     echo "<div id='exhibit'>";
 197     $sql = "SELECT text FROM projects ORDER BY rank";
 198     $result = $this->db->query($sql);
 199     while ($entry = $result->fetch_object()) {
 200       echo $entry->text;
 201     }
 202     echo "</div>";
 203   }
 204
 205   private function list_projects() {
 206     echo <<<HEREDOC
 207         <li>
 208           <h3>my projects:</h3>
 209         </li>
 210 HEREDOC;
 211     $sql = "SELECT title FROM projects ORDER BY rank";
 212     $result = $this->db->query($sql);
 213     while ($entry = $result->fetch_object()) {
 214       echo "<li><a class='tab' href='$entry->title'>$entry->title</a></li>";
 215     }
 216   }
 217
 218 }
 219
 220
 221 class project extends index {
 222
 223   protected function display_exhibits() {
 224     echo "<div id='exhibit'>";
 225     $sql = "SELECT text FROM projects
 226              WHERE title = ?";
 227     $result = $this->query($sql, "s", $_GET['project']);
 228     if ($result = $result[0]['text']) {
 229       $text =  str_replace("class='exhibit'", "class='exhibit' style='display:block;'", $result);
 230       echo $text;
 231       echo "</div>";
 232     } else {
 233       throw new notFound();
 234     }
 235   }
 236
 237 }
 238
 239
 240 class page extends cms {
 241
 242   private $page = 1;
 243   private $offset = 0;
 244   private $notes_per_page = 4;
 245   private $number_of_pages = 1;
 246
 247   public function __construct() {
 248     parent::__construct();
 249     $this->page_offset();
 250     $this->scripts = "
 251         <script type='text/javascript' src='/includes/syntax/scripts/shCore.js'></script>
 252         <script type='text/javascript' src='/includes/syntax/scripts/shAutoloader.js'></script>
 253         <link type='text/css' rel='stylesheet' href='/includes/syntax/styles/shCore.css'>
 254         <link type='text/css' rel='stylesheet' href='/includes/syntax/styles/shThemeDefault.css'>
 255         <script type='text/javascript'>
 256           function highlight() {
 257             SyntaxHighlighter.autoloader(
 258              'js /includes/syntax/scripts/shBrushJScript.js',
 259              'bash /includes/syntax/scripts/shBrushBash.js',
 260              'sql /includes/syntax/scripts/shBrushSql.js',
 261              'cpp /includes/syntax/scripts/shBrushCpp.js');
 262             SyntaxHighlighter.defaults['gutter'] = false;
 263             SyntaxHighlighter.defaults['toolbar'] = false;
 264             SyntaxHighlighter.all();
 265           }
 266         </script>
 267     ";
 268   }
 269
 270   private function page_offset() {
 271     $sql = "SELECT COUNT(*) FROM notes";
 272     $result = $this->db->query($sql);
 273     $result = $result->fetch_array();
 274     $this->number_of_pages = ceil($result[0] / $this->notes_per_page);
 275     if (isset($_GET['page']) && is_numeric($_GET['page'])) {
 276       $this->page = (int) $_GET['page'];
 277     } else {
 278       throw new notFound();
 279     }
 280     if ($this->page > $this->number_of_pages) {
 281       throw new notFound();
 282     }
 283     if ($this->page < 1) {
 284       throw new notFound();
 285     }
 286     $this->offset = ($this->page - 1) * $this->notes_per_page;
 287   }
 288
 289   public function display() {
 290     $this->display_head();
 291     echo "<div id='notes'>";
 292     $sql = "SELECT date_posted, title, url, text
 293               FROM notes ORDER BY date_posted DESC
 294               LIMIT ?, ?";
 295     $result = $this->query($sql, "ii",
 296                               $this->offset,
 297                               $this->notes_per_page);
 298     foreach ($result as $row => $entry) {
 299       $title = $entry['title'];
 300       $url = '/note/' . $entry['url'];
 301       $date_posted =  explode("-", $entry['date_posted']);
 302       $year_posted = $date_posted[0];
 303       $month_posted = $date_posted[1];
 304       $datetime_posted = explode(' ', $date_posted[2]);
 305       $day_posted = $datetime_posted[0];
 306       $text = $entry['text'];
 307       echo <<<END_NOTE
 308       <div class='note'>
 309       <h1>
 310         <span class='date'>$year_posted/$month_posted/$day_posted/</span><a rel="canonical" href='$url'>$title</a>
 311       </h1>
 312       $text
 313       </div>
 314 END_NOTE;
 315     }
 316     echo "</div>";
 317     $this->write_navigation();
 318     $this->display_close();
 319   }
 320
 321   private function write_navigation() {
 322     echo "<div id='navigation'>";
 323     echo "<h1>";
 324     if($this->page > 1){
 325       $previous_page = $this->page - 1;
 326       echo "<a href='/notes/page/$previous_page'>prev</a>";
 327     }
 328     if($this->page < $this->number_of_pages) {
 329     $forward_page = $this->page + 1;
 330     echo " <a href='/notes/page/$forward_page'>next</a>";
 331     }
 332     echo "</h1>";
 333     echo "</div>";
 334   }
 335
 336 }
 337
 338
 339 class note extends cms {
 340
 341   private $id;
 342   private $comments_enabled = false;
 343   private $failed_captcha;
 344   public $url;
 345   public $title;
 346   public $year_posted;
 347   public $month_posted;
 348   public $day_posted;
 349   public $text;
 350   public $number_of_comments;
 351
 352   public function __construct() {
 353       $this->scripts = "
 354         <script type='text/javascript' src='/includes/syntax/scripts/shCore.js'></script>
 355         <script type='text/javascript' src='/includes/syntax/scripts/shAutoloader.js'></script>
 356         <link type='text/css' rel='stylesheet' href='/includes/syntax/styles/shCore.css'>
 357         <link type='text/css' rel='stylesheet' href='/includes/syntax/styles/shThemeDefault.css'>
 358         <script type='text/javascript'>
 359           function highlight() {
 360             SyntaxHighlighter.autoloader(
 361              'js /includes/syntax/scripts/shBrushJScript.js',
 362              'bash /includes/syntax/scripts/shBrushBash.js',
 363              'sql /includes/syntax/scripts/shBrushSql.js',
 364              'cpp /includes/syntax/scripts/shBrushCpp.js');
 365             SyntaxHighlighter.defaults['gutter'] = false;
 366             SyntaxHighlighter.defaults['toolbar'] = false;
 367             SyntaxHighlighter.all();
 368           }
 369         </script>
 370       ";
 371
 372     if (isset($_GET['comments'])) {
 373       $this->scripts .= "
 374         <script type='text/javascript' src='http://www.google.com/recaptcha/api/js/recaptcha_ajax.js'></script>
 375         <script type='text/javascript' src='/includes/comment.js'></script>";
 376     }
 377     parent::__construct();
 378     if (isset($_GET['comments'])) {
 379       $this->comments_enabled = true;
 380     }
 381     $url = htmlspecialchars($_SERVER['REQUEST_URI']);
 382     if (isset($_GET['verify'])) {
 383       $url = substr($url, 0, (strlen($url)-6));
 384     }
 385     $this->url = $url;
 386     $sql = "SELECT title, date_posted, text, id
 387               FROM notes WHERE url = ?";
 388     $result = $this->query($sql, "s",
 389                               $_GET['note']);
 390     if ($result) {
 391       $entry = $result[0];
 392       $this->id = $entry["id"];
 393       $this->title = $entry["title"];
 394       $date_posted =  explode("-", $entry["date_posted"]);
 395       $this->year_posted = $date_posted[0];
 396       $this->month_posted = $date_posted[1];
 397       $datetime_posted = explode(' ', $date_posted[2]);
 398       $this->day_posted = $datetime_posted[0];
 399       $this->text = $entry["text"];
 400     } else {
 401       throw new notFound();
 402     }
 403     $sql = "SELECT COUNT(*) FROM comments
 404               WHERE note = $this->id";
 405     $result = $this->db->query($sql);
 406     $result = $result->fetch_array();
 407     $this->number_of_comments = $result[0];
 408     if (isset($_GET['verify'])) {
 409       $this->verify();
 410     }
 411   }
 412
 413   public function display() {
 414     $this->display_head();
 415     $this->display_note();
 416     if ($this->comments_enabled) {
 417       $this->display_comments();
 418       $this->display_comment_form();
 419     }
 420     $this->write_navigation();
 421     $this->display_close();
 422   }
 423
 424   private function verify() {
 425     if (!isset($_POST['captcha'])) {
 426       require_once('includes/recaptchalib.php');
 427       echo "<br>";
 428       $resp = recaptcha_check_answer ($this->recaptcha_privatekey,
 429                                       $_SERVER["REMOTE_ADDR"],
 430                                       $_POST["recaptcha_challenge_field"],
 431                                       $_POST["recaptcha_response_field"]);
 432       if (!$resp->is_valid) {
 433         $this->failed_captcha = true;
 434       }
 435     }
 436     if (isset($_POST['captcha']) || $resp->is_valid) {
 437       $sql = ("INSERT INTO comments (date_posted, author,
 438                   text, note)
 439                 VALUES(NOW(), ?, ?, ?)");
 440       $stmt = $this->db->prepare($sql);
 441       // Checks are needed here (no blank text,
 442       // and a default author needs to be set
 443       // for no-javascript users.
 444       $stmt->bind_param('sss',
 445                           $_POST['name'],
 446                           $_POST['text'],
 447                         $this->id);
 448       $stmt->execute();
 449     }
 450   }
 451
 452   private function display_note() {
 453     echo <<<END_OF_NOTE
 454     <div id='note'>
 455     <h1><span class='date'>$this->year_posted/$this->month_posted/$this->day_posted/</span>$this->title</h1>
 456     $this->text
 457     </div>
 458 END_OF_NOTE;
 459   }
 460
 461   private function write_navigation() {
 462     echo <<<END_OF_NAVIGATION
 463     <br><br><br><br>
 464     <div id='navigation'>
 465     <h1>
 466 END_OF_NAVIGATION;
 467     if (!$this->comments_enabled) {
 468       $this->display_comment_link();
 469     }
 470     echo <<<END_OF_NAVIGATION
 471     <a href="/notes/">back to notes/</a>
 472     </h1>
 473     </div>
 474 END_OF_NAVIGATION;
 475   }
 476
 477   private function display_comment_link() {
 478     if ($this->number_of_comments > 0) {
 479       $anchor_text = "comments($this->number_of_comments)/";
 480     } else {
 481       $anchor_text = "comment?";
 482     }
 483     if (substr($this->url, (strlen($this->url)-1), strlen($this->url)) == '/') {
 484       $url = $this->url . 'comments/';
 485     } else {
 486       $url = $this->url . '/comments/';
 487     }
 488     echo "<a id='comment_link' href='$url'>$anchor_text</a>";
 489   }
 490
 491   private function display_comments() {
 492     echo "<div id='comments'>";
 493     $sql= "SELECT date_posted, author, text
 494              FROM comments WHERE note = ?
 495              ORDER BY date_posted DESC";
 496     $result = $this->query($sql, 'd', $this->id);
 497     foreach ($result as $row => $entry) {
 498       $date_posted = $entry['date_posted'];
 499       $author = $entry['author'];
 500       $text = htmlspecialchars($entry['text']);
 501       $head = "<h3>" . htmlspecialchars($author) . "</h3>";
 502       echo <<<END_OF_COMMENT
 503       <div class='comment'>
 504       $head
 505       $text
 506       </div>
 507 END_OF_COMMENT;
 508       }
 509     echo "</div>";
 510   }
 511
 512   private function display_comment_form() {
 513     $publickey = $this->recaptcha_publickey;
 514     echo <<<END_CAPTCHA_STYLE
 515 <script type="text/javascript">
 516 Recaptcha.create("$publickey",
 517    "recaptcha_div",
 518    {
 519      theme : 'custom',
 520      custom_theme_widget: 'recaptcha_widget',
 521      callback: Recaptcha.focus_response_field
 522    });
 523 </script>
 524 END_CAPTCHA_STYLE;
 525     require_once('includes/recaptchalib.php');
 526     $url = $this->url . "verify";
 527     echo "<form id='comment_form'  method='post' action='$url'>";
 528     echo <<<END_OF_FORM
 529     <div id="comment">
 530       <h3>comment:</h3>
 531       <textarea rows="10" cols="70" name="text" id="comment_text"></textarea>
 532       <h3>name:</h3>
 533       <input type=text name="name" id="comment_name">
 534
 535       <nowiki>
 536       <div id="recaptcha_widget">
 537         <br>
 538         <h3><b>what's this say</b>?</h3>
 539         <br>
 540           <div id="recaptcha_image"></div>
 541         <br><br><br>
 542         <span class="recaptcha_only_if_image"><br><br><br></span>
 543         <input type="text" id="recaptcha_response_field" name="recaptcha_response_field" />
 544         <br><br>
 545         <h3 class="recaptcha_only_if_audio"><b>enter the numbers you hear</b>:</h3>
 546         <span class="recaptcha_help">
 547           <a href="javascript:Recaptcha.reload()">another?</a> /
 548           <span class="recaptcha_only_if_image"><a href="javascript:Recaptcha.switch_type('audio')">audio?</a> /</span>
 549           <span class="recaptcha_only_if_audio"><a href="javascript:Recaptcha.switch_type('image')">image?</a></span><a href="javascript:Recaptcha.showhelp()">help?</a>
 550         </span>
 551       </div>
 552 END_OF_FORM;
 553     echo recaptcha_get_html($this->recaptcha_publickey);
 554     if ($this->failed_captcha) {
 555     echo <<<END_OF_ERRORS
 556         <div id="not_human">
 557           reCAPTCHA said you're not human, <br>
 558           try again?
 559         </div>
 560         <input id="submit" class="submit" type="submit" value="post comment">
 561         </form>
 562       </div>
 563 END_OF_ERRORS;
 564     } else {
 565       echo <<<END_OF_ERRORS
 566         <div id="not_human">
 567           reCAPTCHA said you're not human, <br>
 568           try again?
 569         </div>
 570         <div id="blank_comment">
 571           but you didn't write anything! <br>
 572         </div>
 573 END_OF_ERRORS;
 574     }
 575     echo <<<END_OF_FORM
 576       <input id="submit" class="submit" type="submit" value="post comment">
 577       </form>
 578       </div>
 579 END_OF_FORM;
 580   }
 581 }
 582
 583
 584 class archive extends cms {
 585
 586   public function __construct() {
 587     parent::__construct();
 588   }
 589
 590   private function check_exists() {
 591     $sql = "SELECT COUNT(*) FROM notes
 592               WHERE url = ?";
 593     $results = $this->query($sql, "s", $_GET['note']);
 594     if ($results[0]["COUNT(*)"] != 1) {
 595       $this->not_found();
 596     }
 597   }
 598
 599   public function display() {
 600     $this->display_head();
 601     switch (true) {
 602       case (isset($_GET['year']) && !isset($_GET['month'])
 603                 && !isset($_GET['day'])):
 604         $sql = "SELECT title, url, date_posted, text
 605                   FROM notes WHERE YEAR(date_posted) = ?
 606                 ORDER BY date_posted DESC";
 607         $result = $this->query($sql, "d",
 608                                   $_GET['year']);
 609         break;
 610       case (isset($_GET['year']) && isset($_GET['month'])
 611                && !isset($_GET['day'])):
 612         $sql = "SELECT title, url, date_posted, text
 613                   FROM notes WHERE YEAR(date_posted) = ?
 614                 AND MONTH(date_posted) = ?
 615                 ORDER BY date_posted DESC";
 616         $result = $this->query($sql, "dd",
 617                                   $_GET['year'], $_GET['month']);
 618         break;
 619       case (isset($_GET['year']) && isset($_GET['month'])
 620               && isset($_GET['day'])):
 621         $sql = "SELECT title, url, date_posted, text
 622                   FROM notes WHERE YEAR(date_posted) = ?
 623                 AND MONTH(date_posted) = ?
 624                 AND DAY(date_posted) = ?
 625                 ORDER BY date_posted DESC";
 626         $result = $this->query($sql, "ddd",
 627                                 $_GET['year'], $_GET['month'],
 628                                 $_GET['day']);
 629         break;
 630     }
 631     if (count($result) >= 1) {
 632       echo "<div id='notes'>";
 633       foreach ($result as $row => $entry) {
 634         $title = $entry['title'];
 635         $url = '/note/' . $entry['url'];
 636         $date_posted =  explode("-", $entry['date_posted']);
 637         $year_posted = $date_posted[0];
 638         $month_posted = $date_posted[1];
 639         $datetime_posted = explode(' ', $date_posted[2]);
 640         $day_posted = $datetime_posted[0];
 641         echo "<div class='note'>";
 642         echo "<h1><span class='date'>";
 643         echo "$year_posted/$month_posted/$day_posted/";
 644         echo "</span><a href='$url'>$title</a></h1>";
 645         echo $entry['text'];
 646         echo "</div>";
 647       }
 648       echo "</div>";
 649       $this->write_navigation();
 650     } else {
 651       echo "<br>";
 652       echo "<h1>sorry, nothing here</h2>";
 653       echo "<pre>Empty set (0.00 sec)</pre>";
 654     }
 655     $this->display_close();
 656   }
 657
 658   private function write_navigation() {
 659     echo "<br>";
 660     echo "<div id='navigation'>";
 661     // fill me in!
 662     echo "</div>";
 663   }
 664
 665 }
 666
 667
 668 class rss extends cms {
 669   public function display() {
 670     $result = $this->db->query("SELECT date_posted, title, text, url
 671                                           FROM notes ORDER BY date_posted DESC
 672                                           LIMIT 5");
 673           echo <<<END_OF_ENTRY
 674           <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
 675       <channel>
 676             <title>dylanstestserver.com/notes/rss</title>
 677                 <link>http://dylanstestserver.com/notes</link>
 678                 <description>dylanstestserver.com/notes/rss</description>
 679                 <atom:link href="http://dylanstestserver.com/notes/rss" rel="self" type="application/rss+xml" />
 680 END_OF_ENTRY;
 681         while ($entry = $result->fetch_object()) {
 682           $title = $entry->title;
 683           $date_posted = $entry->date_posted;
 684           $url = "http://dylanstestserver.com/note/" . $entry->url;
 685           $text = $entry->text;
 686           $text = strip_tags($text);
 687           $end_of_first_sentence = strpos($text, '.');
 688           if ($end_of_first_sentence) {
 689             $end_of_second_sentence = strpos($text, '.', ($end_of_first_sentence + 1));
 690                 if ($end_of_second_sentence) {
 691                   $description = substr($text, '0', ($end_of_second_sentence + 1));
 692                 } else {
 693                   $description = substr($text, '0', ($end_of_first_sentence + 1));
 694                 }
 695           }
 696           echo <<<END_OF_ENTRY
 697             <item>
 698                   <title>$title</title>
 699                   <link>$url</link>
 700                   <guid>$url</guid>
 701                   <description>$description</description>
 702             </item>
 703 END_OF_ENTRY;
 704         }
 705       echo "</channel>";
 706       echo "</rss>";
 707
 708   }
 709 }
 710
 711
 712 class notFound extends Exception {
 713
 714     public function __construct() {
 715       header('HTTP/1.0 404 Not Found');
 716       ob_end_clean();
 717       include('404.php');
 718       exit();
 719     }
 720
 721 }
 722
 723
 724 class captcha extends cms {
 725
 726     public function display() {
 727       $challenge = $_GET['challenge'];
 728       $response = $_GET['response'];
 729       $remoteip = $_SERVER['REMOTE_ADDR'];
 730       $curl = curl_init('http://api-verify.recaptcha.net/verify?');
 731       curl_setopt ($curl, CURLOPT_POST, 4);
 732       curl_setopt ($curl, CURLOPT_POSTFIELDS, "privatekey=$this->recaptcha_privatekey&remoteip=$remoteip&challenge=$challenge&response=$response");
 733       $result = curl_exec ($curl);
 734       curl_close ($curl);
 735     }
 736
 737 }
 738
 739
 740 ## now actually do something:
 741 switch (cms::determine_type()) {
 742   case 'index':
 743     $index = new index();
 744     $index->display();
 745     break;
 746   case 'project':
 747     $project = new project();
 748     $project->display();
 749     break;
 750   case 'note':
 751     $note = new note;
 752     $note->display();
 753     break;
 754   case 'page':
 755     $page = new page;
 756     $page->display();
 757     break;
 758   case "rss":
 759     $rss = new rss();
 760         $rss->display();
 761   case 'archive':
 762     $archive = new archive;
 763         $archive->display();
 764         break;
 765   case "captcha":
 766     $captcha = new captcha;
 767     $captcha->display();
 768     break;
 769 }
 770
 771 ?>