Source for file login.php

Documentation is available at login.php

  1. <?php
  3. /**
  4. * login.php -- simple login screen
  5. *
  6. * This a simple login screen. Some housekeeping is done to clean
  7. * cookies and find language.
  8. *
  9. * @copyright 1999-2020 The SquirrelMail Project Team
  10. * @license http://opensource.org/licenses/gpl-license.php GNU Public License
  11. * @version $Id: login.php 14840 2020年01月07日 07:42:38Z pdontthink $
  12. * @package squirrelmail
  13. */
  15. /** This is the login page */
  16. define ('PAGE_NAME', 'login');
  18. /**
  19. * Path for SquirrelMail required files.
  20. * @ignore
  21. */
  22. define ('SM_PATH','../');
  24. /* SquirrelMail required files. */
  25. require_once(SM_PATH . 'functions/global.php');
  26. require_once(SM_PATH . 'functions/i18n.php');
  27. require_once(SM_PATH . 'functions/plugin.php');
  28. require_once(SM_PATH . 'functions/constants.php');
  29. require_once(SM_PATH . 'functions/page_header.php');
  30. require_once(SM_PATH . 'functions/html.php');
  31. require_once(SM_PATH . 'functions/forms.php');
  33. /**
  34. * $squirrelmail_language is set by a cookie when the user selects
  35. * language and logs out
  36. */
  37. set_up_language ($squirrelmail_language, TRUE, TRUE);
  39. /**
  40. * In case the last session was not terminated properly, make sure
  41. * we get a new one, but make sure we preserve session_expired_*
  42. */
  43. $sep = '';
  44. $sel = '';
  45. sqGetGlobalVar('session_expired_post', $sep, SQ_SESSION );
  46. sqGetGlobalVar('session_expired_location', $sel, SQ_SESSION );
  48. /* blow away session */
  51. /**
  52. * in some rare instances, the session seems to stick
  53. * around even after destroying it (!!), so if it does,
  54. * we'll manually flatten the $_SESSION data
  55. */
  56. if (!empty($_SESSION)) {
  57. $_SESSION = array();
  58. }
  60. /**
  61. * Allow administrators to define custom session handlers
  62. * for SquirrelMail without needing to change anything in
  63. * php.ini (application-level).
  64. *
  65. * In config_local.php, admin needs to put:
  66. *
  67. * $custom_session_handlers = array(
  68. * 'my_open_handler',
  69. * 'my_close_handler',
  70. * 'my_read_handler',
  71. * 'my_write_handler',
  72. * 'my_destroy_handler',
  73. * 'my_gc_handler',
  74. * );
  75. * session_module_name('user');
  76. * session_set_save_handler(
  77. * $custom_session_handlers[0],
  78. * $custom_session_handlers[1],
  79. * $custom_session_handlers[2],
  80. * $custom_session_handlers[3],
  81. * $custom_session_handlers[4],
  82. * $custom_session_handlers[5]
  83. * );
  84. *
  85. * We need to replicate that code once here because PHP has
  86. * long had a bug that resets the session handler mechanism
  87. * when the session data is also destroyed. Because of this
  88. * bug, even administrators who define custom session handlers
  89. * via a PHP pre-load defined in php.ini (auto_prepend_file)
  90. * will still need to define the $custom_session_handlers array
  91. * in config_local.php.
  92. */
  93. global $custom_session_handlers;
  94. if (!empty($custom_session_handlers)) {
  95. $open = $custom_session_handlers[0];
  96. $close = $custom_session_handlers[1];
  97. $read = $custom_session_handlers[2];
  98. $write = $custom_session_handlers[3];
  99. $destroy = $custom_session_handlers[4];
  100. $gc = $custom_session_handlers[5];
  102. session_set_save_handler ($open, $close, $read, $write, $destroy, $gc);
  103. }
  105. /* put session_expired_* variables back in session */
  107. if (!empty($sel)) {
  108. sqsession_register ($sel, 'session_expired_location');
  109. if (!empty($sep))
  110. sqsession_register ($sep, 'session_expired_post');
  111. }
  113. // Disable Browser Caching
  114. //
  115. header ('Cache-Control: no-cache, no-store, must-revalidate');
  116. header ('Pragma: no-cache');
  117. header ('Expires: Sat, 1 Jan 2000 00:00:00 GMT');
  119. do_hook ('login_cookie');
  121. $loginname_value = (sqGetGlobalVar('loginname', $loginname) ? sm_encode_html_special_chars ($loginname) : '');
  123. /* Output the javascript onload function. */
  125. $header = "<script language=\"JavaScript\" type=\"text/javascript\">\n" .
  126. "<!--\n".
  127. " var alreadyFocused = false;\n".
  128. " function squirrelmail_loginpage_onload() {\n".
  129. " document.login_form.js_autodetect_results.value = '" . SMPREF_JS_ON . "';\n".
  130. " if (alreadyFocused) return;\n".
  131. " var textElements = 0;\n".
  132. " for (i = 0; i < document.login_form.elements.length; i++) {\n".
  133. " if (document.login_form.elements[i].type == \"text\" || document.login_form.elements[i].type == \"password\") {\n".
  134. " textElements++;\n".
  135. " if (textElements == " . (isset($loginname) ? 2 : 1) . ") {\n".
  136. " document.login_form.elements[i].focus();\n".
  137. " break;\n".
  138. " }\n".
  139. " }\n".
  140. " }\n".
  141. " }\n".
  142. "// -->\n".
  143. "</script>\n";
  144. $custom_css = 'none';
  146. // Load default theme if possible
  147. if (@file_exists ($theme[$theme_default]['PATH']))
  148. @include ($theme[$theme_default]['PATH']);
  150. if (! isset($color) || ! is_array ($color)) {
  151. // Add default color theme, if theme loading fails
  152. $color = array();
  153. $color[0] = '#dcdcdc'; /* light gray TitleBar */
  154. $color[1] = '#800000'; /* red */
  155. $color[2] = '#cc0000'; /* light red Warning/Error Messages */
  156. $color[4] = '#ffffff'; /* white Normal Background */
  157. $color[7] = '#0000cc'; /* blue Links */
  158. $color[8] = '#000000'; /* black Normal text */
  159. }
  161. // if any plugin returns TRUE here, the standard page header will be skipped
  162. if (!boolean_hook_function ('login_before_page_header', array($header), 1))
  163. displayHtmlHeader ( "$org_name - " . _ ("Login"), $header, FALSE );
  165. echo "<body text=\"$color[8]\" bgcolor=\"$color[4]\" link=\"$color[7]\" vlink=\"$color[7]\" alink=\"$color[7]\" onLoad=\"squirrelmail_loginpage_onload();\">" .
  166. "\n" . addForm ('redirect.php', 'post', 'login_form');
  168. $username_form_name = 'login_username';
  169. $password_form_name = 'secretkey';
  170. do_hook ('login_top');
  173. if(sqgetGlobalVar ('mailtodata', $mailtodata)) {
  174. $mailtofield = addHidden ('mailtodata', $mailtodata);
  175. } else {
  176. $mailtofield = '';
  177. }
  179. /* If they don't have a logo, don't bother.. */
  180. if (isset($org_logo) && $org_logo) {
  181. /* Display width and height like good little people */
  182. $width_and_height = '';
  183. if (isset($org_logo_width) && is_numeric ($org_logo_width) &&
  184. $org_logo_width>0) {
  185. $width_and_height = " width=\"$org_logo_width\"";
  186. }
  187. if (isset($org_logo_height) && is_numeric ($org_logo_height) &&
  188. $org_logo_height>0) {
  189. $width_and_height .= " height=\"$org_logo_height\"";
  190. }
  191. }
  193. echo html_tag ( 'table',
  194. html_tag ( 'tr',
  195. html_tag ( 'td',
  196. '<center>'.
  197. ( isset($org_logo) && $org_logo
  198. ? '<img src="' . $org_logo . '" alt="' .
  199. sprintf (_ ("%s Logo"), $org_name) .'"' . $width_and_height .
  200. ' /><br />' . "\n"
  201. : '' ).
  202. ( (isset($hide_sm_attributions) && $hide_sm_attributions) ? '' :
  203. '<small>' . sprintf (_ ("SquirrelMail version %s"), $version) . '<br />' ."\n".
  204. ' ' . _ ("By the SquirrelMail Project Team") . '<br /></small>' . "\n" ) .
  205. html_tag ( 'table',
  206. html_tag ( 'tr',
  207. html_tag ( 'td',
  208. '<b>' . sprintf (_ ("%s Login"), $org_name) . "</b>\n",
  209. 'center', $color[0] )
  210. ) .
  211. html_tag ( 'tr',
  212. html_tag ( 'td', "\n" .
  213. html_tag ( 'table',
  214. html_tag ( 'tr',
  215. html_tag ( 'td',
  216. _ ("Name:") ,
  217. 'right', '', 'width="30%" id="username_td"' ) .
  218. html_tag ( 'td',
  219. addInput ($username_form_name, $loginname_value, 0, 0, ' onfocus="alreadyFocused=true;"'),
  220. 'left', '', 'width="70%"' )
  221. ) . "\n" .
  222. html_tag ( 'tr',
  223. html_tag ( 'td',
  224. _ ("Password:") ,
  225. 'right', '', 'width="30%" id="secretkey_td"' ) .
  226. html_tag ( 'td',
  227. addPwField ($password_form_name, null, ' onfocus="alreadyFocused=true;"').
  228. addHidden ('js_autodetect_results', SMPREF_JS_OFF ).
  229. $mailtofield .
  230. addHidden ('just_logged_in', '1'),
  231. 'left', '', 'width="70%"' )
  232. ) ,
  233. 'center', $color[4], 'border="0" width="100%" id="login_table"' ) ,
  234. 'left',$color[4] )
  235. ) .
  236. html_tag ( 'tr',
  237. html_tag ( 'td',
  238. '<center>'. addSubmit (_ ("Login"), 'smsubmit') .'</center>',
  239. 'left' )
  240. ),
  241. '', $color[4], 'border="0" width="350"' ) . '</center>',
  242. 'center' )
  243. ) ,
  244. '', $color[4], 'border="0" cellspacing="0" cellpadding="0" width="100%"' );
  245. do_hook ('login_form');
  246. echo '</form>' . "\n";
  248. do_hook ('login_bottom');
  249. ?>
  250. </body></html>

Documentation generated on 2020年1月13日 04:24:53 +0100 by phpDocumentor 1.4.3

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