1 | <?php |
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2 | /* vim: set expandtab sw=4 ts=4 sts=4: */ |
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3 | /** |
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4 | * Cookie Authentication plugin for phpMyAdmin |
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5 | * |
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6 | * @package PhpMyAdmin-Authentication |
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7 | * @subpackage Cookie |
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8 | */ |
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9 | declare(strict_types=1); |
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10 | |||
11 | namespace PhpMyAdmin\Plugins\Auth; |
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12 | |||
13 | use PhpMyAdmin\Config; |
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14 | use PhpMyAdmin\Core; |
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15 | use PhpMyAdmin\LanguageManager; |
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16 | use PhpMyAdmin\Message; |
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17 | use PhpMyAdmin\Plugins\AuthenticationPlugin; |
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18 | use PhpMyAdmin\Response; |
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19 | use PhpMyAdmin\Server\Select; |
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20 | use PhpMyAdmin\Session; |
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21 | use PhpMyAdmin\Template; |
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22 | use PhpMyAdmin\Util; |
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23 | use PhpMyAdmin\Url; |
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24 | use phpseclib\Crypt; |
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25 | use ReCaptcha; |
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26 | use phpseclib\Crypt\Random; |
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27 | |||
28 | /** |
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29 | * Remember where to redirect the user |
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30 | * in case of an expired session. |
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31 | */ |
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32 | if (! empty($_REQUEST['target'])) { |
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33 | $GLOBALS['target'] = $_REQUEST['target']; |
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34 | } elseif (Core::getenv('SCRIPT_NAME')) { |
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35 | $GLOBALS['target'] = basename(Core::getenv('SCRIPT_NAME')); |
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36 | } |
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37 | |||
38 | /** |
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39 | * Handles the cookie authentication method |
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40 | * |
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41 | * @package PhpMyAdmin-Authentication |
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42 | */ |
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43 | class AuthenticationCookie extends AuthenticationPlugin |
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44 | { |
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45 | /** |
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46 | * IV for encryption |
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47 | */ |
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48 | private $_cookie_iv = null; |
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49 | |||
50 | /** |
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51 | * Whether to use OpenSSL directly |
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52 | */ |
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53 | private $_use_openssl; |
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54 | |||
55 | /** |
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56 | * Constructor |
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57 | */ |
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58 | public function __construct() |
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59 | { |
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60 | parent::__construct(); |
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61 | $this->_use_openssl = ! class_exists(Random::class); |
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62 | } |
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63 | |||
64 | /** |
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65 | * Forces (not)using of openSSL |
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66 | * |
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67 | * @param boolean $use The flag |
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68 | * |
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69 | * @return void |
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70 | */ |
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71 | public function setUseOpenSSL($use) |
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72 | { |
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73 | $this->_use_openssl = $use; |
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74 | } |
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75 | |||
76 | /** |
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77 | * Displays authentication form |
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78 | * |
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79 | * this function MUST exit/quit the application |
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80 | * |
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81 | * @global string $conn_error the last connection error |
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82 | * |
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83 | * @return boolean|void |
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84 | */ |
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85 | public function showLoginForm() |
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86 | { |
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87 | global $conn_error; |
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88 | |||
89 | $response = Response::getInstance(); |
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90 | |||
91 | // When sending login modal after session has expired, send the new token explicitly with the response to update the token in all the forms having a hidden token. |
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92 | $session_expired = isset($_REQUEST['check_timeout']) || isset($_REQUEST['session_timedout']); |
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93 | if (! $session_expired && $response->loginPage()) { |
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94 | if (defined('TESTSUITE')) { |
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95 | return true; |
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96 | } else { |
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97 | exit; |
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98 | } |
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99 | } |
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100 | |||
101 | // When sending login modal after session has expired, send the new token explicitly with the response to update the token in all the forms having a hidden token. |
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102 | if ($session_expired) { |
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103 | $response->setRequestStatus(false); |
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104 | $response->addJSON( |
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105 | 'new_token', |
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106 | $_SESSION[' PMA_token '] |
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107 | ); |
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108 | } |
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109 | |||
110 | // logged_in response parameter is used to check if the login, using the modal was successful after session expiration |
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111 | if (isset($_REQUEST['session_timedout'])) { |
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112 | $response->addJSON( |
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113 | 'logged_in', |
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114 | 0 |
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115 | ); |
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116 | } |
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117 | |||
118 | // No recall if blowfish secret is not configured as it would produce |
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119 | // garbage |
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120 | if ($GLOBALS['cfg']['LoginCookieRecall'] |
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121 | && ! empty($GLOBALS['cfg']['blowfish_secret']) |
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122 | ) { |
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123 | $default_user = $this->user; |
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124 | $default_server = $GLOBALS['pma_auth_server']; |
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125 | $autocomplete = ''; |
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126 | } else { |
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127 | $default_user = ''; |
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128 | $default_server = ''; |
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129 | // skip the IE autocomplete feature. |
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130 | $autocomplete = ' autocomplete="off"'; |
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131 | } |
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132 | |||
133 | // wrap the login form in a div which overlays the whole page. |
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134 | if ($session_expired) { |
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135 | echo $this->template->render('login/header', [ |
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136 | 'theme' => $GLOBALS['PMA_Theme'], |
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137 | 'add_class' => ' modal_form', |
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138 | 'session_expired' => 1, |
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139 | ]); |
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140 | } else { |
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141 | echo $this->template->render('login/header', [ |
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142 | 'theme' => $GLOBALS['PMA_Theme'], |
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143 | 'add_class' => '', |
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144 | 'session_expired' => 0, |
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145 | ]); |
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146 | } |
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147 | |||
148 | if ($GLOBALS['cfg']['DBG']['demo']) { |
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149 | echo '<fieldset>'; |
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150 | echo '<legend>' , __('phpMyAdmin Demo Server') , '</legend>'; |
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151 | printf( |
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152 | __( |
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153 | 'You are using the demo server. You can do anything here, but ' |
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154 | . 'please do not change root, debian-sys-maint and pma users. ' |
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155 | . 'More information is available at %s.' |
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156 | ), |
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157 | '<a href="url.php?url=https://demo.phpmyadmin.net/" target="_blank" rel="noopener noreferrer">demo.phpmyadmin.net</a>' |
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158 | ); |
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159 | echo '</fieldset>'; |
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160 | } |
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161 | |||
162 | // Show error message |
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163 | if (! empty($conn_error)) { |
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164 | Message::rawError((string) $conn_error)->display(); |
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165 | } elseif (isset($_GET['session_expired']) |
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166 | && intval($_GET['session_expired']) == 1 |
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167 | ) { |
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168 | Message::rawError( |
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169 | __('Your session has expired. Please log in again.') |
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170 | )->display(); |
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171 | } |
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172 | |||
173 | // Displays the languages form |
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174 | $language_manager = LanguageManager::getInstance(); |
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175 | if (empty($GLOBALS['cfg']['Lang']) && $language_manager->hasChoice()) { |
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176 | echo "<div class='hide js-show'>"; |
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177 | // use fieldset, don't show doc link |
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178 | echo $language_manager->getSelectorDisplay(true, false); |
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179 | echo '</div>'; |
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180 | } |
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181 | echo ' |
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182 | <br> |
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183 | <!-- Login form --> |
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184 | <form method="post" id="login_form" action="index.php" name="login_form"' , $autocomplete , |
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185 | ' class="' . ($session_expired ? "" : "disableAjax hide ") . 'login js-show"> |
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186 | <fieldset> |
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187 | <legend>'; |
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188 | echo '<input type="hidden" name="set_session" value="', htmlspecialchars(session_id()), '">'; |
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189 | |||
190 | // Add a hidden element session_timedout which is used to check if the user requested login after session expiration |
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191 | if ($session_expired) { |
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192 | echo '<input type="hidden" name="session_timedout" value="1">'; |
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193 | } |
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194 | echo __('Log in'); |
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195 | echo Util::showDocu('index'); |
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196 | echo '</legend>'; |
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197 | if ($GLOBALS['cfg']['AllowArbitraryServer']) { |
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198 | echo ' |
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199 | <div class="item"> |
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200 | <label for="input_servername" title="'; |
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201 | echo __( |
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202 | 'You can enter hostname/IP address and port separated by space.' |
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203 | ); |
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204 | echo '">'; |
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205 | echo __('Server:'); |
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206 | echo '</label> |
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207 | <input type="text" name="pma_servername" id="input_servername"'; |
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208 | echo ' value="'; |
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209 | echo htmlspecialchars($default_server); |
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210 | echo '" size="24" class="textfield" title="'; |
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211 | echo __( |
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212 | 'You can enter hostname/IP address and port separated by space.' |
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213 | ); echo '"> |
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214 | </div>'; |
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215 | } |
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216 | echo '<div class="item"> |
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217 | <label for="input_username">' , __('Username:') , '</label> |
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218 | <input type="text" name="pma_username" id="input_username" ' |
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219 | , 'value="' , htmlspecialchars($default_user) , '" size="24"' |
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220 | , ' class="textfield"> |
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221 | </div> |
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222 | <div class="item"> |
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223 | <label for="input_password">' , __('Password:') , '</label> |
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224 | <input type="password" name="pma_password" id="input_password"' |
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225 | , ' value="" size="24" class="textfield"> |
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226 | </div>'; |
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227 | if (count($GLOBALS['cfg']['Servers']) > 1) { |
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228 | echo '<div class="item"> |
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229 | <label for="select_server">' . __('Server Choice:') . '</label> |
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230 | <select name="server" id="select_server"'; |
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231 | if ($GLOBALS['cfg']['AllowArbitraryServer']) { |
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232 | echo ' onchange="document.forms[\'login_form\'].' |
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233 | , 'elements[\'pma_servername\'].value = \'\'" '; |
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234 | } |
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235 | echo '>'; |
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236 | echo Select::render(false, false); |
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237 | echo '</select></div>'; |
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238 | } else { |
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239 | echo ' <input type="hidden" name="server" value="' |
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240 | , $GLOBALS['server'] , '">'; |
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241 | } // end if (server choice) |
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242 | |||
243 | echo '</fieldset><fieldset class="tblFooters">'; |
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244 | |||
245 | // binds input field with invisible reCaptcha if enabled |
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246 | if (empty($GLOBALS['cfg']['CaptchaLoginPrivateKey']) |
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247 | && empty($GLOBALS['cfg']['CaptchaLoginPublicKey']) |
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248 | ) { |
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249 | echo '<input class="btn btn-primary" value="' , __('Go') , '" type="submit" id="input_go">'; |
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250 | } else { |
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251 | echo '<script src="https://www.google.com/recaptcha/api.js?hl=' |
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252 | , $GLOBALS['lang'] , '" async defer></script>'; |
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253 | echo '<input class="btn btn-primary g-recaptcha" data-sitekey="' |
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254 | , htmlspecialchars($GLOBALS['cfg']['CaptchaLoginPublicKey']),'"' |
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255 | . ' data-callback="Functions.recaptchaCallback" value="' , __('Go') , '" type="submit" id="input_go">'; |
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256 | } |
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257 | $_form_params = []; |
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258 | if (! empty($GLOBALS['target'])) { |
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259 | $_form_params['target'] = $GLOBALS['target']; |
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260 | } |
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261 | if (strlen($GLOBALS['db'])) { |
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262 | $_form_params['db'] = $GLOBALS['db']; |
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263 | } |
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264 | if (strlen($GLOBALS['table'])) { |
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265 | $_form_params['table'] = $GLOBALS['table']; |
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266 | } |
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267 | // do not generate a "server" hidden field as we want the "server" |
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268 | // drop-down to have priority |
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269 | echo Url::getHiddenInputs($_form_params, '', 0, 'server'); |
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270 | echo '</fieldset> |
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271 | </form>'; |
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272 | |||
273 | if ($GLOBALS['error_handler']->hasDisplayErrors()) { |
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274 | echo '<div id="pma_errors">'; |
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275 | $GLOBALS['error_handler']->dispErrors(); |
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276 | echo '</div>'; |
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277 | } |
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278 | |||
279 | // close the wrapping div tag, if the request is after session timeout |
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280 | if ($session_expired) { |
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281 | echo $this->template->render('login/footer', ['session_expired' => 1]); |
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282 | } else { |
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283 | echo $this->template->render('login/footer', ['session_expired' => 0]); |
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284 | } |
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285 | |||
286 | echo Config::renderFooter(); |
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287 | |||
288 | if (! defined('TESTSUITE')) { |
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289 | exit; |
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290 | } else { |
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291 | return true; |
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292 | } |
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293 | } |
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294 | |||
295 | /** |
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296 | * Gets authentication credentials |
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297 | * |
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298 | * this function DOES NOT check authentication - it just checks/provides |
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299 | * authentication credentials required to connect to the MySQL server |
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300 | * usually with $GLOBALS['dbi']->connect() |
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301 | * |
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302 | * it returns false if something is missing - which usually leads to |
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303 | * showLoginForm() which displays login form |
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304 | * |
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305 | * it returns true if all seems ok which usually leads to auth_set_user() |
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306 | * |
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307 | * it directly switches to showFailure() if user inactivity timeout is reached |
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308 | * |
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309 | * @return boolean whether we get authentication settings or not |
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310 | */ |
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311 | public function readCredentials() |
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312 | { |
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313 | global $conn_error; |
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314 | |||
315 | // Initialization |
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316 | /** |
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317 | * @global $GLOBALS['pma_auth_server'] the user provided server to |
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318 | * connect to |
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319 | */ |
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320 | $GLOBALS['pma_auth_server'] = ''; |
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321 | |||
322 | $this->user = $this->password = ''; |
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323 | $GLOBALS['from_cookie'] = false; |
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324 | |||
325 | if (isset($_POST['pma_username']) && strlen($_POST['pma_username']) > 0) { |
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326 | |||
327 | // Verify Captcha if it is required. |
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328 | if (! empty($GLOBALS['cfg']['CaptchaLoginPrivateKey']) |
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329 | && ! empty($GLOBALS['cfg']['CaptchaLoginPublicKey']) |
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330 | ) { |
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331 | if (! empty($_POST["g-recaptcha-response"])) { |
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332 | if (function_exists('curl_init')) { |
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333 | $reCaptcha = new ReCaptcha\ReCaptcha( |
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334 | $GLOBALS['cfg']['CaptchaLoginPrivateKey'], |
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335 | new ReCaptcha\RequestMethod\CurlPost() |
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336 | ); |
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337 | } elseif (ini_get('allow_url_fopen')) { |
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338 | $reCaptcha = new ReCaptcha\ReCaptcha( |
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339 | $GLOBALS['cfg']['CaptchaLoginPrivateKey'], |
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340 | new ReCaptcha\RequestMethod\Post() |
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341 | ); |
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342 | } else { |
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343 | $reCaptcha = new ReCaptcha\ReCaptcha( |
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344 | $GLOBALS['cfg']['CaptchaLoginPrivateKey'], |
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345 | new ReCaptcha\RequestMethod\SocketPost() |
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346 | ); |
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347 | } |
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348 | |||
349 | // verify captcha status. |
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350 | $resp = $reCaptcha->verify( |
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351 | $_POST["g-recaptcha-response"], |
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352 | Core::getIp() |
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353 | ); |
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354 | |||
355 | // Check if the captcha entered is valid, if not stop the login. |
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356 | if ($resp == null || ! $resp->isSuccess()) { |
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357 | $codes = $resp->getErrorCodes(); |
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358 | |||
359 | if (in_array('invalid-json', $codes)) { |
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360 | $conn_error = __('Failed to connect to the reCAPTCHA service!'); |
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361 | } else { |
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362 | $conn_error = __('Entered captcha is wrong, try again!'); |
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363 | } |
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364 | return false; |
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365 | } |
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366 | } else { |
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367 | $conn_error = __('Missing reCAPTCHA verification, maybe it has been blocked by adblock?'); |
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368 | return false; |
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369 | } |
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370 | } |
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371 | |||
372 | // The user just logged in |
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373 | $this->user = Core::sanitizeMySQLUser($_POST['pma_username']); |
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374 | $this->password = isset($_POST['pma_password']) ? $_POST['pma_password'] : ''; |
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375 | if ($GLOBALS['cfg']['AllowArbitraryServer'] |
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376 | && isset($_REQUEST['pma_servername']) |
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377 | ) { |
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378 | if ($GLOBALS['cfg']['ArbitraryServerRegexp']) { |
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379 | $parts = explode(' ', $_REQUEST['pma_servername']); |
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380 | if (count($parts) == 2) { |
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381 | $tmp_host = $parts[0]; |
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382 | } else { |
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383 | $tmp_host = $_REQUEST['pma_servername']; |
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384 | } |
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385 | |||
386 | $match = preg_match( |
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387 | $GLOBALS['cfg']['ArbitraryServerRegexp'], |
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388 | $tmp_host |
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389 | ); |
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390 | if (! $match) { |
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391 | $conn_error = __( |
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392 | 'You are not allowed to log in to this MySQL server!' |
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393 | ); |
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394 | return false; |
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395 | } |
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396 | } |
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397 | $GLOBALS['pma_auth_server'] = Core::sanitizeMySQLHost($_REQUEST['pma_servername']); |
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398 | } |
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399 | /* Secure current session on login to avoid session fixation */ |
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400 | Session::secure(); |
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401 | return true; |
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402 | } |
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403 | |||
404 | // At the end, try to set the $this->user |
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405 | // and $this->password variables from cookies |
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406 | |||
407 | // check cookies |
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408 | if (empty($_COOKIE['pmaUser-' . $GLOBALS['server']])) { |
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409 | return false; |
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410 | } |
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411 | |||
412 | $value = $this->cookieDecrypt( |
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413 | $_COOKIE['pmaUser-' . $GLOBALS['server']], |
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414 | $this->_getEncryptionSecret() |
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415 | ); |
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416 | |||
417 | if ($value === false) { |
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418 | return false; |
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419 | } |
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420 | |||
421 | $this->user = $value; |
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422 | // user was never logged in since session start |
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423 | if (empty($_SESSION['browser_access_time'])) { |
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424 | return false; |
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425 | } |
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426 | |||
427 | // User inactive too long |
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428 | $last_access_time = time() - $GLOBALS['cfg']['LoginCookieValidity']; |
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429 | foreach ($_SESSION['browser_access_time'] as $key => $value) { |
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430 | if ($value < $last_access_time) { |
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431 | unset($_SESSION['browser_access_time'][$key]); |
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432 | } |
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433 | } |
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434 | // All sessions expired |
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435 | if (empty($_SESSION['browser_access_time'])) { |
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436 | Util::cacheUnset('is_create_db_priv'); |
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437 | Util::cacheUnset('is_reload_priv'); |
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438 | Util::cacheUnset('db_to_create'); |
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439 | Util::cacheUnset('dbs_where_create_table_allowed'); |
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440 | Util::cacheUnset('dbs_to_test'); |
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441 | Util::cacheUnset('db_priv'); |
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442 | Util::cacheUnset('col_priv'); |
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443 | Util::cacheUnset('table_priv'); |
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444 | Util::cacheUnset('proc_priv'); |
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445 | |||
446 | $this->showFailure('no-activity'); |
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447 | if (! defined('TESTSUITE')) { |
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448 | exit; |
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449 | } else { |
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450 | return false; |
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451 | } |
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452 | } |
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453 | |||
454 | // check password cookie |
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455 | if (empty($_COOKIE['pmaAuth-' . $GLOBALS['server']])) { |
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456 | return false; |
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457 | } |
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458 | $value = $this->cookieDecrypt( |
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459 | $_COOKIE['pmaAuth-' . $GLOBALS['server']], |
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460 | $this->_getSessionEncryptionSecret() |
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461 | ); |
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462 | if ($value === false) { |
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463 | return false; |
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464 | } |
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465 | |||
466 | $auth_data = json_decode($value, true); |
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467 | |||
468 | if (! is_array($auth_data) || ! isset($auth_data['password'])) { |
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469 | return false; |
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470 | } |
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471 | $this->password = $auth_data['password']; |
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472 | if ($GLOBALS['cfg']['AllowArbitraryServer'] && ! empty($auth_data['server'])) { |
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473 | $GLOBALS['pma_auth_server'] = $auth_data['server']; |
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474 | } |
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475 | |||
476 | $GLOBALS['from_cookie'] = true; |
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477 | |||
478 | return true; |
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479 | } |
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480 | |||
481 | /** |
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482 | * Set the user and password after last checkings if required |
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483 | * |
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484 | * @return boolean always true |
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485 | */ |
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486 | public function storeCredentials() |
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487 | { |
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488 | global $cfg; |
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489 | |||
490 | if ($GLOBALS['cfg']['AllowArbitraryServer'] |
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491 | && ! empty($GLOBALS['pma_auth_server']) |
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492 | ) { |
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493 | /* Allow to specify 'host port' */ |
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494 | $parts = explode(' ', $GLOBALS['pma_auth_server']); |
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495 | if (count($parts) == 2) { |
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496 | $tmp_host = $parts[0]; |
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497 | $tmp_port = $parts[1]; |
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498 | } else { |
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499 | $tmp_host = $GLOBALS['pma_auth_server']; |
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500 | $tmp_port = ''; |
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501 | } |
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502 | if ($cfg['Server']['host'] != $GLOBALS['pma_auth_server']) { |
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503 | $cfg['Server']['host'] = $tmp_host; |
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504 | if (! empty($tmp_port)) { |
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505 | $cfg['Server']['port'] = $tmp_port; |
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506 | } |
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507 | } |
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508 | unset($tmp_host, $tmp_port, $parts); |
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509 | } |
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510 | |||
511 | return parent::storeCredentials(); |
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512 | } |
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513 | |||
514 | /** |
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515 | * Stores user credentials after successful login. |
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516 | * |
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517 | * @return void|bool |
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518 | */ |
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519 | public function rememberCredentials() |
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520 | { |
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521 | // Name and password cookies need to be refreshed each time |
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522 | // Duration = one month for username |
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523 | |||
524 | $this->storeUsernameCookie($this->user); |
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525 | |||
526 | // Duration = as configured |
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527 | // Do not store password cookie on password change as we will |
||
528 | // set the cookie again after password has been changed |
||
529 | if (! isset($_POST['change_pw'])) { |
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530 | $this->storePasswordCookie($this->password); |
||
531 | } |
||
532 | // URL where to go: |
||
533 | $redirect_url = './index.php'; |
||
534 | |||
535 | // any parameters to pass? |
||
536 | $url_params = []; |
||
537 | if (strlen($GLOBALS['db']) > 0) { |
||
538 | $url_params['db'] = $GLOBALS['db']; |
||
539 | } |
||
540 | if (strlen($GLOBALS['table']) > 0) { |
||
541 | $url_params['table'] = $GLOBALS['table']; |
||
542 | } |
||
543 | // any target to pass? |
||
544 | if (! empty($GLOBALS['target']) |
||
545 | && $GLOBALS['target'] != 'index.php' |
||
546 | ) { |
||
547 | $url_params['target'] = $GLOBALS['target']; |
||
548 | } |
||
549 | |||
550 | // user logged in successfully after session expiration |
||
551 | if (isset($_REQUEST['session_timedout'])) { |
||
552 | $response = Response::getInstance(); |
||
553 | $response->addJSON( |
||
554 | 'logged_in', |
||
555 | 1 |
||
556 | ); |
||
557 | $response->addJSON( |
||
558 | 'success', |
||
559 | 1 |
||
560 | ); |
||
561 | $response->addJSON( |
||
562 | 'new_token', |
||
563 | $_SESSION[' PMA_token '] |
||
564 | ); |
||
565 | |||
566 | if (! defined('TESTSUITE')) { |
||
567 | exit; |
||
568 | } else { |
||
569 | return false; |
||
570 | } |
||
571 | } |
||
572 | // Set server cookies if required (once per session) and, in this case, |
||
573 | // force reload to ensure the client accepts cookies |
||
574 | if (! $GLOBALS['from_cookie']) { |
||
575 | |||
576 | /** |
||
577 | * Clear user cache. |
||
578 | */ |
||
579 | Util::clearUserCache(); |
||
580 | |||
581 | Response::getInstance() |
||
582 | ->disable(); |
||
583 | |||
584 | Core::sendHeaderLocation( |
||
585 | $redirect_url . Url::getCommonRaw($url_params), |
||
586 | true |
||
587 | ); |
||
588 | if (! defined('TESTSUITE')) { |
||
589 | exit; |
||
590 | } else { |
||
591 | return false; |
||
592 | } |
||
593 | } // end if |
||
594 | |||
595 | return true; |
||
596 | } |
||
597 | |||
598 | /** |
||
599 | * Stores username in a cookie. |
||
600 | * |
||
601 | * @param string $username User name |
||
602 | * |
||
603 | * @return void |
||
604 | */ |
||
605 | public function storeUsernameCookie($username) |
||
606 | { |
||
607 | // Name and password cookies need to be refreshed each time |
||
608 | // Duration = one month for username |
||
609 | $GLOBALS['PMA_Config']->setCookie( |
||
610 | 'pmaUser-' . $GLOBALS['server'], |
||
611 | $this->cookieEncrypt( |
||
612 | $username, |
||
613 | $this->_getEncryptionSecret() |
||
614 | ) |
||
615 | ); |
||
616 | } |
||
617 | |||
618 | /** |
||
619 | * Stores password in a cookie. |
||
620 | * |
||
621 | * @param string $password Password |
||
622 | * |
||
623 | * @return void |
||
624 | */ |
||
625 | public function storePasswordCookie($password) |
||
626 | { |
||
627 | $payload = ['password' => $password]; |
||
628 | if ($GLOBALS['cfg']['AllowArbitraryServer'] && ! empty($GLOBALS['pma_auth_server'])) { |
||
629 | $payload['server'] = $GLOBALS['pma_auth_server']; |
||
630 | } |
||
631 | // Duration = as configured |
||
632 | $GLOBALS['PMA_Config']->setCookie( |
||
633 | 'pmaAuth-' . $GLOBALS['server'], |
||
634 | $this->cookieEncrypt( |
||
635 | json_encode($payload), |
||
636 | $this->_getSessionEncryptionSecret() |
||
637 | ), |
||
638 | null, |
||
639 | (int) $GLOBALS['cfg']['LoginCookieStore'] |
||
640 | ); |
||
641 | } |
||
642 | |||
643 | /** |
||
644 | * User is not allowed to login to MySQL -> authentication failed |
||
645 | * |
||
646 | * prepares error message and switches to showLoginForm() which display the error |
||
647 | * and the login form |
||
648 | * |
||
649 | * this function MUST exit/quit the application, |
||
650 | * currently done by call to showLoginForm() |
||
651 | * |
||
652 | * @param string $failure String describing why authentication has failed |
||
653 | * |
||
654 | * @return void |
||
655 | */ |
||
656 | public function showFailure($failure) |
||
657 | { |
||
658 | global $conn_error; |
||
659 | |||
660 | parent::showFailure($failure); |
||
661 | |||
662 | // Deletes password cookie and displays the login form |
||
663 | $GLOBALS['PMA_Config']->removeCookie('pmaAuth-' . $GLOBALS['server']); |
||
664 | |||
665 | $conn_error = $this->getErrorMessage($failure); |
||
666 | |||
667 | $response = Response::getInstance(); |
||
668 | |||
669 | // needed for PHP-CGI (not need for FastCGI or mod-php) |
||
670 | $response->header('Cache-Control: no-store, no-cache, must-revalidate'); |
||
671 | $response->header('Pragma: no-cache'); |
||
672 | |||
673 | $this->showLoginForm(); |
||
674 | } |
||
675 | |||
676 | /** |
||
677 | * Returns blowfish secret or generates one if needed. |
||
678 | * |
||
679 | * @return string |
||
680 | */ |
||
681 | private function _getEncryptionSecret() |
||
682 | { |
||
683 | if (empty($GLOBALS['cfg']['blowfish_secret'])) { |
||
684 | return $this->_getSessionEncryptionSecret(); |
||
685 | } |
||
686 | |||
687 | return $GLOBALS['cfg']['blowfish_secret']; |
||
688 | } |
||
689 | |||
690 | /** |
||
691 | * Returns blowfish secret or generates one if needed. |
||
692 | * |
||
693 | * @return string |
||
694 | */ |
||
695 | private function _getSessionEncryptionSecret() |
||
696 | { |
||
697 | if (empty($_SESSION['encryption_key'])) { |
||
698 | if ($this->_use_openssl) { |
||
699 | $_SESSION['encryption_key'] = openssl_random_pseudo_bytes(32); |
||
700 | } else { |
||
701 | $_SESSION['encryption_key'] = Crypt\Random::string(32); |
||
702 | } |
||
703 | } |
||
704 | return $_SESSION['encryption_key']; |
||
705 | } |
||
706 | |||
707 | /** |
||
708 | * Concatenates secret in order to make it 16 bytes log |
||
709 | * |
||
710 | * This doesn't add any security, just ensures the secret |
||
711 | * is long enough by copying it. |
||
712 | * |
||
713 | * @param string $secret Original secret |
||
714 | * |
||
715 | * @return string |
||
716 | */ |
||
717 | public function enlargeSecret($secret) |
||
718 | { |
||
719 | while (strlen($secret) < 16) { |
||
720 | $secret .= $secret; |
||
721 | } |
||
722 | return substr($secret, 0, 16); |
||
723 | } |
||
724 | |||
725 | /** |
||
726 | * Derives MAC secret from encryption secret. |
||
727 | * |
||
728 | * @param string $secret the secret |
||
729 | * |
||
730 | * @return string the MAC secret |
||
731 | */ |
||
732 | public function getMACSecret($secret) |
||
733 | { |
||
734 | // Grab first part, up to 16 chars |
||
735 | // The MAC and AES secrets can overlap if original secret is short |
||
736 | $length = strlen($secret); |
||
737 | if ($length > 16) { |
||
738 | return substr($secret, 0, 16); |
||
739 | } |
||
740 | return $this->enlargeSecret( |
||
741 | $length == 1 ? $secret : substr($secret, 0, -1) |
||
742 | ); |
||
743 | } |
||
744 | |||
745 | /** |
||
746 | * Derives AES secret from encryption secret. |
||
747 | * |
||
748 | * @param string $secret the secret |
||
749 | * |
||
750 | * @return string the AES secret |
||
751 | */ |
||
752 | public function getAESSecret($secret) |
||
753 | { |
||
754 | // Grab second part, up to 16 chars |
||
755 | // The MAC and AES secrets can overlap if original secret is short |
||
756 | $length = strlen($secret); |
||
757 | if ($length > 16) { |
||
758 | return substr($secret, -16); |
||
759 | } |
||
760 | return $this->enlargeSecret( |
||
761 | $length == 1 ? $secret : substr($secret, 1) |
||
762 | ); |
||
763 | } |
||
764 | |||
765 | /** |
||
766 | * Cleans any SSL errors |
||
767 | * |
||
768 | * This can happen from corrupted cookies, by invalid encryption |
||
769 | * parameters used in older phpMyAdmin versions or by wrong openSSL |
||
770 | * configuration. |
||
771 | * |
||
772 | * In neither case the error is useful to user, but we need to clear |
||
773 | * the error buffer as otherwise the errors would pop up later, for |
||
774 | * example during MySQL SSL setup. |
||
775 | * |
||
776 | * @return void |
||
777 | */ |
||
778 | public function cleanSSLErrors() |
||
779 | { |
||
780 | if (function_exists('openssl_error_string')) { |
||
781 | do { |
||
782 | $hasSslErrors = openssl_error_string(); |
||
783 | } while ($hasSslErrors !== false); |
||
784 | } |
||
785 | } |
||
786 | |||
787 | /** |
||
788 | * Encryption using openssl's AES or phpseclib's AES |
||
789 | * (phpseclib uses mcrypt when it is available) |
||
790 | * |
||
791 | * @param string $data original data |
||
792 | * @param string $secret the secret |
||
793 | * |
||
794 | * @return string the encrypted result |
||
795 | */ |
||
796 | public function cookieEncrypt($data, $secret) |
||
797 | { |
||
798 | $mac_secret = $this->getMACSecret($secret); |
||
799 | $aes_secret = $this->getAESSecret($secret); |
||
800 | $iv = $this->createIV(); |
||
801 | if ($this->_use_openssl) { |
||
802 | $result = openssl_encrypt( |
||
803 | $data, |
||
804 | 'AES-128-CBC', |
||
805 | $aes_secret, |
||
806 | 0, |
||
807 | $iv |
||
808 | ); |
||
809 | } else { |
||
810 | $cipher = new Crypt\AES(Crypt\Base::MODE_CBC); |
||
811 | $cipher->setIV($iv); |
||
812 | $cipher->setKey($aes_secret); |
||
813 | $result = base64_encode($cipher->encrypt($data)); |
||
814 | } |
||
815 | $this->cleanSSLErrors(); |
||
816 | $iv = base64_encode($iv); |
||
817 | return json_encode( |
||
818 | [ |
||
819 | 'iv' => $iv, |
||
820 | 'mac' => hash_hmac('sha1', $iv . $result, $mac_secret), |
||
821 | 'payload' => $result, |
||
822 | ] |
||
823 | ); |
||
824 | } |
||
825 | |||
826 | /** |
||
827 | * Decryption using openssl's AES or phpseclib's AES |
||
828 | * (phpseclib uses mcrypt when it is available) |
||
829 | * |
||
830 | * @param string $encdata encrypted data |
||
831 | * @param string $secret the secret |
||
832 | * |
||
833 | * @return string|false original data, false on error |
||
834 | */ |
||
835 | public function cookieDecrypt($encdata, $secret) |
||
836 | { |
||
837 | $data = json_decode($encdata, true); |
||
838 | |||
839 | if (! is_array($data) || ! isset($data['mac']) || ! isset($data['iv']) || ! isset($data['payload']) |
||
840 | || ! is_string($data['mac']) || ! is_string($data['iv']) || ! is_string($data['payload']) |
||
841 | ) { |
||
842 | return false; |
||
843 | } |
||
844 | |||
845 | $mac_secret = $this->getMACSecret($secret); |
||
846 | $aes_secret = $this->getAESSecret($secret); |
||
847 | $newmac = hash_hmac('sha1', $data['iv'] . $data['payload'], $mac_secret); |
||
848 | |||
849 | if (! hash_equals($data['mac'], $newmac)) { |
||
850 | return false; |
||
851 | } |
||
852 | |||
853 | if ($this->_use_openssl) { |
||
854 | $result = openssl_decrypt( |
||
855 | $data['payload'], |
||
856 | 'AES-128-CBC', |
||
857 | $aes_secret, |
||
858 | 0, |
||
859 | base64_decode($data['iv']) |
||
860 | ); |
||
861 | } else { |
||
862 | $cipher = new Crypt\AES(Crypt\Base::MODE_CBC); |
||
863 | $cipher->setIV(base64_decode($data['iv'])); |
||
864 | $cipher->setKey($aes_secret); |
||
865 | $result = $cipher->decrypt(base64_decode($data['payload'])); |
||
866 | } |
||
867 | $this->cleanSSLErrors(); |
||
868 | return $result; |
||
869 | } |
||
870 | |||
871 | /** |
||
872 | * Returns size of IV for encryption. |
||
873 | * |
||
874 | * @return int |
||
875 | */ |
||
876 | public function getIVSize() |
||
877 | { |
||
878 | if ($this->_use_openssl) { |
||
879 | return openssl_cipher_iv_length('AES-128-CBC'); |
||
880 | } |
||
881 | return (new Crypt\AES(Crypt\Base::MODE_CBC))->block_size; |
||
882 | } |
||
883 | |||
884 | /** |
||
885 | * Initialization |
||
886 | * Store the initialization vector because it will be needed for |
||
887 | * further decryption. I don't think necessary to have one iv |
||
888 | * per server so I don't put the server number in the cookie name. |
||
889 | * |
||
890 | * @return string |
||
891 | */ |
||
892 | public function createIV() |
||
893 | { |
||
894 | /* Testsuite shortcut only to allow predictable IV */ |
||
895 | if (! is_null($this->_cookie_iv)) { |
||
896 | return $this->_cookie_iv; |
||
897 | } |
||
898 | if ($this->_use_openssl) { |
||
899 | return openssl_random_pseudo_bytes( |
||
900 | $this->getIVSize() |
||
901 | ); |
||
902 | } |
||
903 | |||
904 | return Crypt\Random::string( |
||
905 | $this->getIVSize() |
||
906 | ); |
||
907 | } |
||
908 | |||
909 | /** |
||
910 | * Sets encryption IV to use |
||
911 | * |
||
912 | * This is for testing only! |
||
913 | * |
||
914 | * @param string $vector The IV |
||
915 | * |
||
916 | * @return void |
||
917 | */ |
||
918 | public function setIV($vector) |
||
919 | { |
||
920 | $this->_cookie_iv = $vector; |
||
921 | } |
||
922 | |||
923 | /** |
||
924 | * Callback when user changes password. |
||
925 | * |
||
926 | * @param string $password New password to set |
||
927 | * |
||
928 | * @return void |
||
929 | */ |
||
930 | public function handlePasswordChange($password) |
||
931 | { |
||
932 | $this->storePasswordCookie($password); |
||
933 | } |
||
934 | |||
935 | /** |
||
936 | * Perform logout |
||
937 | * |
||
938 | * @return void |
||
939 | */ |
||
940 | public function logOut() |
||
941 | { |
||
942 | // -> delete password cookie(s) |
||
943 | if ($GLOBALS['cfg']['LoginCookieDeleteAll']) { |
||
944 | foreach ($GLOBALS['cfg']['Servers'] as $key => $val) { |
||
945 | $GLOBALS['PMA_Config']->removeCookie('pmaAuth-' . $key); |
||
946 | if (isset($_COOKIE['pmaAuth-' . $key])) { |
||
947 | unset($_COOKIE['pmaAuth-' . $key]); |
||
948 | } |
||
949 | } |
||
950 | } else { |
||
951 | $GLOBALS['PMA_Config']->removeCookie( |
||
952 | 'pmaAuth-' . $GLOBALS['server'] |
||
953 | ); |
||
954 | if (isset($_COOKIE['pmaAuth-' . $GLOBALS['server']])) { |
||
955 | unset($_COOKIE['pmaAuth-' . $GLOBALS['server']]); |
||
956 | } |
||
957 | } |
||
958 | parent::logOut(); |
||
959 | } |
||
960 | } |
||
961 |