index.php

   1 <?php
   2 require('includes/header.php');
   3
   4 include('lib/db.php');
   5
   6 $connection = new CustomDB($configs['host'], $configs['username'], $configs['password'], $configs['database']);
   7
   8 $page = filter_input(INPUT_GET, 'page', FILTER_SANITIZE_URL);
   9 $is_page = true;
  10 if (!isset($page)) {
  11     $is_page = false;
  12     $page = "";
  13 }
  14
  15 /**
  16  * form MUST have an hidden field named 'form' to enable proper routing
  17  */
  18 $form = filter_input(INPUT_POST, 'form', FILTER_SANITIZE_URL);
  19 $is_form = true;
  20 if (!isset($form)) {
  21     $is_form = false;
  22     $form = "";
  23 }
  24
  25 //var_dump($_SESSION);
  26
  27 function get_action_type() {
  28     global $is_page, $is_form;
  29
  30     if ($is_page && !$is_form && is_get_request()) {
  31         return "page";
  32     } elseif ($is_form && !$is_page && is_post_request()) {
  33         return "form";
  34     } elseif (!$is_page && !$is_form && is_get_request()){
  35         return "empty";
  36     } else {
  37         return "unknown";
  38     }
  39 }
  40
  41 function get_url_action($action_type) {
  42     global $page, $form;
  43
  44     if ($action_type === "page") {
  45         return $page;
  46     } elseif ($action_type === "form") {
  47         return $form;
  48     } elseif ($action_type === "empty") {
  49         return "";
  50     } elseif ($action_type === "unknown") {
  51         die('Cannot get a valid action from URL parameters or form fields.');
  52     }
  53 }
  54
  55 /**
  56  * [validate_url_action validate if the current page is a valid site actions]
  57  * @param  [string] $page [the viewed page name]
  58  * @return [string]       [the valid matching action or the default action
  59  *                         if the action name do not exist ]
  60  */
  61 function validate_url_action($action_name)
  62 {
  63     global $configs;
  64
  65     foreach ($configs['actions'] as $action) {
  66         if (strcmp($action_name, $action) === 0) {
  67             // The actions list can't have duplicated entries
  68             return $action;
  69         }
  70     }
  71     // Return the default action
  72     return $configs['actions'][0];
  73 }
  74
  75 function display_action($action_name, $action_type)
  76 {
  77     global $configs;
  78     $includes_rpath = 'includes';
  79
  80     $found_action = false;
  81     foreach ($configs['actions'] as $action) {
  82         if (strcmp($action_name, $action) === 0) {
  83             // HTTP GET case
  84             if ($action_type === "page" || $action_type === "empty") {
  85                 include($includes_rpath . "/" . $action . ".php");
  86             // HTTP POST case
  87             } elseif ($action_type === "form") {
  88                 include($includes_rpath . "/form" . $action . ".php");
  89             } else {
  90                 echo "Unknown error in action displaying. <br>";
  91             }
  92             $found_action = true;
  93             break;
  94         }
  95     }
  96     if (!$found_action) {
  97         echo "Action to display do not exist. <br>";
  98     }
  99 }
 100
 101 $action_type = get_action_type();
 102 $url_action = get_url_action($action_type);
 103 $action = validate_url_action($url_action);
 104 display_action($action, $action_type);
 105
 106 $connection->close();
 107
 108 session_write_close();
 109
 110 require('includes/footer.html');
 111 ?>