login.php

   1 <?php
   2
   3
   4 function login_get_fields() {
   5         $data = array();
   6
   7         $data['after_login_url'] = format_oneline(_REQUEST_cut('after_login_url'));
   8         $data['username'] = format_oneline(trim(_REQUEST_cut('username')));
   9         $data['password'] = format_oneline(trim(_REQUEST_cut('password')));
  10
  11         return $data;
  12 }
  13
  14 function login_main() {
  15         $data = login_get_fields();
  16         if (strlen($data['username']) && strlen($data['password'])) {
  17                 $row = db_get_assoc('users', 'id,name,role,password', 'where username=%"', format_auth_username($data['username']));
  18                 if ($row) # &&
  19                 if (strlen($row['password'])) {
  20                         $needs_rehash = false;
  21                         $password_good = false;
  22                         if (substr($row['password'], 0, 5) === 'sha1:') {
  23                                 if (sha1($data['password']) === substr($row['password'], 5)) {
  24                                         $password_good = true;
  25                                         $needs_rehash = true;
  26                                 }
  27                         } else {
  28                                 if (!function_exists('password_hash')) {
  29                                         require_once(DOCROOT . 'inc/password_funcs_backported.php');
  30                                 }
  31                                 if (password_verify($data['password'], $row['password'])) {
  32                                         $password_good = true;
  33                                         if (password_needs_rehash($row['password'], PASSWORD_DEFAULT)) {
  34                                                 $needs_rehash = true;
  35                                         }
  36                                 }
  37                         }
  38                         if ($password_good) {
  39                                 if ($needs_rehash) {
  40                                         $hash = password_hash($data['password'], PASSWORD_DEFAULT);
  41                                         db_update('users', 'password', $hash, 'where id=%i', $row['id']);
  42                                 }
  43
  44                                 session_new();
  45                                 session_set('auth_id', $row['id']);
  46                                 # we're about to http redirect, so no need to update session_auth now
  47                                 db_update('users', 'last_login', time(), 'where id=%i', $row['id']);
  48                                 message("You are now logged in.");
  49                                 if(!$data['after_login_url']) {
  50                                         if ($row['role'] == 'admin') {
  51                                                 $data['after_login_url'] = './admin';
  52                                         } else {
  53                                                 $data['after_login_url'] = './';
  54                                         }
  55                                 } elseif(strpos(':', $data['after_login_url']) !== false) {
  56                                         $data['after_login_url'] = "./$data[url]";
  57                                 }
  58
  59                                 # redirect to the page they were trying to access:
  60                                 return $data['after_login_url'];
  61                         }
  62                 }
  63                 message("Incorrect username and/or password");
  64         }
  65         $data['password'] = '';
  66         tem_set('form', $data);
  67 }