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 function get_action_type() {
  26     global $is_page, $is_form;
  27
  28     if ($is_page && !$is_form && is_get_request()) {
  29         return "page";
  30     } elseif ($is_form && !$is_page && is_post_request()) {
  31         return "form";
  32     } elseif (!$is_page && !$is_form && is_get_request()){
  33         return "empty";
  34     } else {
  35         return "unknown";
  36     }
  37 }
  38
  39 function get_url_action($action_type) {
  40     global $page, $form;
  41
  42     if ($action_type === "page") {
  43         return $page;
  44     } elseif ($action_type === "form") {
  45         return $form;
  46     } elseif ($action_type === "empty") {
  47         return "";
  48     } elseif ($action_type === "unknown") {
  49         die('Cannot get a valid action from URL parameters or form fields.');
  50     }
  51 }
  52
  53 /**
  54  * [validate_url_action validate if the current page is a valid site actions]
  55  * @param  [string] $page [the viewed page name]
  56  * @return [string]       [the valid matching action or the default action
  57  *                         if the action name do not exist ]
  58  */
  59 function validate_url_action($action_name)
  60 {
  61     global $configs;
  62
  63     foreach ($configs['actions'] as $action) {
  64         if (strcmp($action_name, $action) === 0) {
  65             // The actions list can't have duplicated entries
  66             return $action;
  67         }
  68     }
  69     // Return the default action
  70     return $configs['actions'][0];
  71 }
  72
  73 function display_action($action_name, $action_type)
  74 {
  75     global $configs;
  76     $includes_rpath = 'includes';
  77
  78     $found_action = false;
  79     foreach ($configs['actions'] as $action) {
  80         if (strcmp($action_name, $action) === 0) {
  81             // HTTP GET case
  82             if ($action_type === "page" || $action_type === "empty") {
  83                 include($includes_rpath . "/" . $action . ".php");
  84             // HTTP POST case
  85             } elseif ($action_type === "form") {
  86                 include($includes_rpath . "/form" . $action . ".php");
  87             } else {
  88                 echo "Unknown error in action displaying. <br>";
  89             }
  90             $found_action = true;
  91             break;
  92         }
  93     }
  94     if (!$found_action) {
  95         echo "Action to display do not exist. <br>";
  96     }
  97 }
  98
  99 $action_type = get_action_type();
 100 $url_action = get_url_action($action_type);
 101 $action = validate_url_action($url_action);
 102 display_action($action, $action_type);
 103
 104 $connection->close();
 105
 106 session_write_close();
 107
 108 require('includes/footer.html');
 109 ?>