index.php

   1 <?php
   2 require('header.php');
   3
   4 include('lib/db.php');
   5 /**
   6  * Let's use an array as the list of tunables.
   7  * Put in a variable the inclusion of this file:
   8  * $config_var = include('config.php');
   9  */
  10 $configs = include('config.php');
  11
  12 /**
  13  * [session_start start a unique session for the current browser client]
  14  */
  15 session_start();
  16
  17 $page = filter_input(INPUT_GET, 'page', FILTER_SANITIZE_URL);
  18 $isPage = true;
  19 if (!isset($page)) {
  20     $isPage = false;
  21     $page = "";
  22 }
  23
  24 $form = filter_input(INPUT_POST, 'form', FILTER_SANITIZE_URL);
  25 $isForm = true;
  26 if (!isset($form)) {
  27     $isForm = false;
  28     $form = "";
  29 }
  30
  31 /**
  32  * [validate_url_action validate if the current page is a valid site actions]
  33  * @param  [string] $page [the viewed page name]
  34  * @return [string]       [the valid matching action or the default action
  35  *                         if the action name do not exist ]
  36  */
  37 function validate_url_action($action_name)
  38 {
  39     global $configs;
  40
  41     foreach ($configs['actions'] as $action) {
  42         if (strcmp($action_name, $action) === 0) {
  43             // The actions list can't have duplicated entries
  44             return $action;
  45         }
  46     }
  47     // Return the default action
  48     return $configs['actions'][0];
  49 }
  50
  51 function get_action_type() {
  52     global $page, $form, $isPage, $isForm;
  53
  54     if ($isPage && !$isForm) {
  55         return "page";
  56     } elseif ($isForm && !$isPage) {
  57         return "form";
  58     } elseif (!$isPage && !$isForm){
  59         return "empty";
  60     } else {
  61         return "unknown";
  62     }
  63 }
  64
  65 function display_action($action_name)
  66 {
  67     global $configs, $isPage, $isForm;
  68
  69     $found_action = false;
  70     foreach ($configs['actions'] as $action) {
  71         if (strcmp($action_name, $action) === 0) {
  72             if (get_action_type() === "page" || get_action_type() === "empty") {
  73                 include($action . ".php");
  74             } elseif (get_action_type() === "form") {
  75                 include("form" . $action . ".php");
  76             } else {
  77                 echo "Impossible error";
  78             }
  79             $found_action = true;
  80             break;
  81         }
  82     }
  83     if (!$found_action) {
  84         echo "Action to display do not exist";
  85     }
  86 }
  87
  88 function get_url_action() {
  89     global $page, $form, $isPage, $isForm;
  90
  91     if (get_action_type() === "page") {
  92         return $page;
  93     } elseif (get_action_type() === "form") {
  94         return $form;
  95     } elseif (get_action_type() === "empty") {
  96         return "";
  97     } elseif (get_action_type() === "unknown") {
  98         die('Cannot get a valid action from URL parameters');
  99     }
 100 }
 101
 102 $url_action = get_url_action();
 103 $action = validate_url_action($url_action);
 104 display_action($action);
 105
 106 session_destroy();
 107
 108 require('footer.html');
 109 ?>