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Diffstat (limited to 'packages/authng/pkg/authng_authmethods.inc')
| -rw-r--r-- | packages/authng/pkg/authng_authmethods.inc | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/packages/authng/pkg/authng_authmethods.inc b/packages/authng/pkg/authng_authmethods.inc new file mode 100644 index 00000000..15e15566 --- /dev/null +++ b/packages/authng/pkg/authng_authmethods.inc @@ -0,0 +1,222 @@ +<?php +/* $Id$ */ +/* ========================================================================== */ +/* + authng_authmethods.inc + part of pfSense (http://www.pfSense.com) + Copyright (C) 2007 Daniel S. Haischt <me@daniel.stefan.haischt.name> + All rights reserved. + + Based on m0n0wall (http://m0n0.ch/wall) + Copyright (C) 2003-2006 Manuel Kasper <mk@neon1.net>. + All rights reserved. + */ +/* ========================================================================== */ +/* + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, + INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, + OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + */ +/* ========================================================================== */ + +class AbstractAuthMethod { + function authenticate($backend) { + trigger_error('AbstractAuthMethod::authenticate() needs to be overridden in a subclass.', E_USER_ERROR); + } +} + +class BasicAuthMethod extends AbstractAuthMethod { + function authenticate($backend) { + global $HTTP_SERVER_VARS; + + /* Check for AUTH_USER */ + if ($HTTP_SERVER_VARS['PHP_AUTH_USER'] <> "") { + $HTTP_SERVER_VARS['AUTH_USER'] = $HTTP_SERVER_VARS['PHP_AUTH_USER']; + $HTTP_SERVER_VARS['AUTH_PW'] = $HTTP_SERVER_VARS['PHP_AUTH_PW']; + } + if (!isset($HTTP_SERVER_VARS['AUTH_USER'])) { + require_once("authng_authgui.inc"); + header("WWW-Authenticate: Basic realm=\".\""); + header("HTTP/1.0 401 Unauthorized"); + display_error_form("401", gettext("You must enter valid credentials to access this resource.")); + exit; + } else { + return $backend($HTTP_SERVER_VARS['AUTH_USER'],$HTTP_SERVER_VARS['AUTH_PW']); + } + } +} + +class SessionAuthMethod extends AbstractAuthMethod { + function authenticate($backend) { + global $g, $HTTP_SERVER_VARS, $userindex, $config; + + session_start(); + + /* Validate incoming login request */ + if (isset($_POST['login'])) { + if ($backend($_POST['usernamefld'], $_POST['passwordfld'])) { + $_SESSION['Logged_In'] = "True"; + $_SESSION['Username'] = $_POST['usernamefld']; + $_SESSION['last_access'] = time(); + } else { + $_SESSION['Login_Error'] = "Username or password incorrect."; + } + } + + /* Show login page if they aren't logged in */ + if (empty($_SESSION['Logged_In'])) { + + /* Don't display login forms to AJAX */ + if (isAjax()) + return false; + + require_once("authng_authgui.inc"); + display_login_form(); + return false; + } else { + /* If session timeout isn't set, we don't mark sessions stale */ + if (!isset($config['system']['webgui']['session_timeout']) or + $config['system']['webgui']['session_timeout'] == 0 or + $config['system']['webgui']['session_timeout'] == "") + $_SESSION['last_access'] = time(); + else + /* Check for stale session */ + if ($_SESSION['last_access'] < (time() - ($config['system']['webgui']['session_timeout'] * 60))) + $_GET['logout'] = true; + else + /* only update if it wasn't ajax */ + if (!isAjax()) + $_SESSION['last_access'] = time(); + + /* user hit the logout button */ + if (isset($_GET['logout'])) { + if (hasLockAbility($_SESSION['Username'])) { + unlink_if_exists("{$g['tmp_path']}/webconfigurator.lock"); + } + + /* wipe out $_SESSION */ + $_SESSION = array(); + + if (isset($_COOKIE[session_name()])) { + setcookie(session_name(), '', time()-42000, '/'); + } + + /* and destroy it */ + session_destroy(); + + $scriptName = split("/", $_SERVER["SCRIPT_FILENAME"]); + $scriptElms = count($scriptName); + $scriptName = $scriptName[$scriptElms-1]; + + if (isAjax()) + return false; + + /* redirect to page the user is on, it'll prompt them to login again */ + pfSenseHeader($scriptName); + + return false; + + /* user wants to explicitely delete the log file. + * Requires a particular privilege. + */ + } else if ($_GET['deletelock'] && hasLockAbility($_SESSION['Username'])) { + unlink_if_exists("{$g['tmp_path']}/webconfigurator.lock"); + $HTTP_SERVER_VARS['AUTH_USER'] = $_SESSION['Username']; + return true; + + /* this is for debugging purpose if you do not want to use Ajax + * to submit a HTML form. It basically disables the observation + * of the submit event and hence does not trigger Ajax. + */ + } else if ($_GET['disable_ajax']) { + $_SESSION['NO_AJAX'] = "True"; + $HTTP_SERVER_VARS['AUTH_USER'] = $_SESSION['Username']; + return true; + + /* Same to re-enable Ajax. + */ + } else if ($_GET['enable_ajax']) { + unset($_SESSION['NO_AJAX']); + $HTTP_SERVER_VARS['AUTH_USER'] = $_SESSION['Username']; + return true; + + /* user wants to explicitely create a lock. + * Requires a particular privilege. + */ + } else if ($_GET['createlock'] && hasLockAbility($_SESSION['Username'])) { + $fd = fopen("{$g['tmp_path']}/webconfigurator.lock", "w"); + fputs($fd, "{$_SERVER['REMOTE_ADDR']} (" . + getRealName($_SESSION['Username']) . ")"); + fclose($fd); + /* if the user did delete the lock manually, do not + * re-create it while the session is valide. + */ + $_SESSION['Lock_Created'] = "True"; + $HTTP_SERVER_VARS['AUTH_USER'] = $_SESSION['Username']; + return true; + + /* proceed with the login process */ + } else { + /* if the user is allowed to create a lock, + * create it once per session. + */ + if (hasLockAbility($_SESSION['Username']) && + ! isset($_SESSION['Lock_Created'])) { + + $fd = fopen("{$g['tmp_path']}/webconfigurator.lock", "w"); + fputs($fd, "{$_SERVER['REMOTE_ADDR']} (" . + getRealName($_SESSION['Username']) . ")"); + fclose($fd); + /* if the user did delete the lock manually, do not + * re-create it while the session is valide. + */ + $_SESSION['Lock_Created'] = "True"; + + /* give regular users a chance to automatically invalidate + * a lock if its older than a particular time. + */ + } else if (! hasLockAbility($_SESSION['Username']) && + file_exists("{$g['tmp_path']}/webconfigurator.lock")) { + + $offset = 12; //hours + $mtime = filemtime("{$g['tmp_path']}/webconfigurator.lock"); + $now_minus_offset = mktime(date("H") - $offset, 0, 0, date("m"), date("d"), date("Y")); + + if (($mtime - $now_minus_offset) < $mtime) { + require_once("auth/authgui.inc"); + display_login_form(); + return false; + } else { + /* file is older than mtime + offset which may + * indicate a stale lockfile, hence we are going + * to remove it. + */ + unlink_if_exists("{$g['tmp_path']}/webconfigurator.lock"); + } + } + + $HTTP_SERVER_VARS['AUTH_USER'] = $_SESSION['Username']; + return true; + } // end if + } // end if + } // end function +} + +?>
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