<?php
/* $Id$ */
/* ========================================================================== */
/*
    authng.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.
                                                                              */
/* ========================================================================== */

/* PHP classes like factories users, and groups */
require_once("authng_classdefs.inc");
/* PHP classes representing specific auth methods */
require_once("authng_authmethods.inc");
/* PHP classes representing specific backends */
require_once("authng_backends.inc");
/* PHP peer classes that are providing a persistence layer */
require_once("authng_peers.inc");

// TODO: Define user- and groupindex array

// get principal store type from config.xml
// TODO: needs to be defined in config.xml
//$principalStore = $config['system']['webgui']['principal_store'];
$principalStore = "xml";
// get PeerFactory instance
$peerFactory =& PeerFactory::getInstance();
// get the actual UserPeer that holds the user index
$userPeer =& $peerFactory->getUserPeerByPrincipalStore($principalStore);
// get the actual GroupPeer that holds the user index
$groupPeer =& $peerFactory->getGroupPeerByPrincipalStore($principalStore);
// get AuthMethodFactory instance
$authMethodFactory =& AuthMethodFactory::getInstance();
// get BackendFactory instance
$backendFactory =& BackendFactory::getInstance();
// get the actual auth method
$authMethod =& $authMethodFactory->getAuthMethodByName($config['system']['webgui']['auth_method']);
// get the actual backend
$backend =& $backendFactory->getBackendByName($config['system']['webgui']['backing_method']);

function getUsermanagerPagetitle() {
    global $userPeer;

    $result = "";

    if ($userPeer->isSystemAdmin($HTTP_SERVER_VARS['AUTH_USER'])) {
        // Page title for admins
        $result = array(gettext("System"), gettext("User manager"));
    } else {
        // Page title for non-admins
        $result = array(gettext("System"), gettext("User password"));
    }

    return $result;
}

function processUserManagerPostVars() {
    global $input_errors, $savemsg, $config;

    if (isset($_POST['save'])) {
        unset($input_errors);

        /* input validation */
        $reqdfields = explode(" ", "passwordfld1");
        $reqdfieldsn = explode(",", "Password");

        do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);

        if ($_POST['passwordfld1'] != $_POST['passwordfld2'])
            $input_errors[] = "The passwords do not match.";

        if (!$input_errors) {
            // all values are okay --> saving changes
            $config['system']['user'][$userindex[$HTTP_SERVER_VARS['AUTH_USER']]]['password'] = crypt(trim($_POST['passwordfld1']));

            write_config();

            sync_webgui_passwords();

            $retval = system_password_configure();
            $savemsg = get_std_save_message($retval);
            $savemsg = "Password successfully changed<br />";
        }
    }
}

function processUserManagerAdminPostVars() {
    global $config;

    $id = $_GET['id'];
    if (isset($_POST['id']))
        $id = $_POST['id'];

    if (!is_array($config['system']['user'])) {
        $config['system']['user'] = array();
    }

    admin_users_sort();
    $a_user = &$config['system']['user'];
    $t_privs = $a_user[$id]['priv'];

    if ($_GET['act'] == "del" && $_GET['what'] == "user") {
        if ($a_user[$_GET['id']]) {
            $userdeleted = $a_user[$_GET['id']]['name'];
            unset($a_user[$_GET['id']]);
            write_config();
            $retval = system_password_configure();
            $savemsg = get_std_save_message($retval);
            $savemsg = gettext("User") . " " . $userdeleted . " " . gettext("successfully deleted") . "<br />";
        }
    } else if ($_GET['act'] == "del" && $_GET['what'] == "priv") {
        if ($t_privs[$_GET['privid']]) {
            $privdeleted = $t_privs[$_GET['privid']]['id'];
            unset($t_privs[$_GET['privid']]);
            write_config();
            $_GET['act'] = "edit";
            $retval = 0;
            $savemsg = get_std_save_message($retval);
            $savemsg = gettext("Privilege") . " " . $privdeleted . " " . gettext("of user") . " " . $a_user[$_GET['id']]['name'] . " " . gettext("successfully deleted") . "<br />";
        }
    }

    if ($_POST) {
        unset($input_errors);
        $pconfig = $_POST;

        /* input validation */
        if (isset($id) && ($a_user[$id])) {
            $reqdfields = explode(" ", "usernamefld");
            $reqdfieldsn = explode(",", "Username");
        } else {
            $reqdfields = explode(" ", "usernamefld passwordfld1");
            $reqdfieldsn = explode(",", "Username,Password");
        }

        do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);

        if (hasShellAccess($_POST['usernamefld'])) {
          if (preg_match("/[^a-zA-Z0-9\.\-_]/", $_POST['usernamefld']))
              $input_errors[] = gettext("The username contains invalid characters.");
        } else {
          if (preg_match("/[^a-zA-Z0-9\@\.\-_]/", $_POST['usernamefld']))
              $input_errors[] = gettext("The username contains invalid characters.");
        }

        if (($_POST['passwordfld1']) && ($_POST['passwordfld1'] != $_POST['passwordfld2']))
            $input_errors[] = gettext("The passwords do not match.");

        if (!$input_errors && !(isset($id) && $a_user[$id])) {
            /* make sure there are no dupes */
            foreach ($a_user as $userent) {
                if ($userent['name'] == $_POST['usernamefld']) {
                    $input_errors[] = gettext("Another entry with the same username already exists.");
                    break;
                }
            }
        }

        if ($pconfig['utype'] <> "system" && !isset($groupindex[$_POST['groupname']])) {
            $input_errors[] = gettext("group does not exist, please define the group before assigning users.");
        }

        if (isset($config['system']['ssh']['sshdkeyonly']) &&
            empty($_POST['authorizedkeys'])) {
          $input_errors[] = gettext("You must provide an authorized key otherwise you won't be able to login into this system.");
        }

        /* if this is an AJAX caller then handle via JSON */
        if (isAjax() && is_array($input_errors)) {
            input_errors2Ajax($input_errors);
            exit;
        }

        if (!$input_errors) {
            if (isset($id) && $a_user[$id])
                $userent = $a_user[$id];

            /* the user did change his username */
            if ($_POST['usernamefld'] <> $_POST['oldusername']) {
                $_SERVER['REMOTE_USER'] = $_POST['usernamefld'];
            }

            $userent['name'] = $_POST['usernamefld'];
            $userent['fullname'] = $_POST['fullname'];
            if ($pconfig['utype'] <> "system") {
              $userent['groupname'] = $_POST['groupname'];
            }
            isset($_POST['utype']) ? $userent['scope'] = $_POST['utype'] : $userent['scope'] = "system";

            if ($_POST['passwordfld1'])
                $userent['password'] = crypt($_POST['passwordfld1']);

            if(isset($config['system']['ssh']['sshdkeyonly'])) {
                $userent['authorizedkeys'] = base64_encode($_POST['authorizedkeys']);
            }

            if (isset($id) && $a_user[$id])
                $a_user[$id] = $userent;
            else
                $a_user[] = $userent;

            write_config();
            $retval = system_password_configure();
            sync_webgui_passwords();

            pfSenseHeader("system_usermanager.php");
        }
    }
}

/**
 * getWindowJSScriptRefs()
 *
 * @return
 */
function getWindowJSScriptRefs(){
    $result = array('<script type="text/javascript" src="/javascript/windows-js/javascript/window.js"></script>',
                    '<script type="text/javascript" src="/javascript/windows-js/javascript/window_effects.js"></script>',
                    '<script type="text/javascript" src="/javascript/windows-js/javascript/debug.js"></script>');

    return $result;
}

function gotNoUsers() {
    global $config;
    return empty($config['installedpackages']['authng']['config']);
}

/**
 * openNoUserDefsDialog()
 *
 * @param mixed $effectClass
 * @return
 */
function openNoUserDefsDialog($effectClass) {
    if (gotNoUsers()) {
        $alertMessage = gettext("No users or groups found. You will be forwarded to the AuthNG wizard to be able to define users and groups.");
        $dialogScript = "
            <script type='text/javascript'>
                var anchor = document.getElementById('popupanchor');

                function forwardToWizard() {
                    window.location.href = '/wizard.php?xml=authng_wizard.xml';
                }

                function openNoUserDefsDialog(html) {
                    var effect = new PopupEffect(html, {className: '${effectClass}'});
                    Dialog.alert('${alertMessage}',{className:'alphacube', top:150, width:400, height:null, showEffect:effect.show.bind(effect), hideEffect:effect.hide.bind(effect), onOk:forwardToWizard});
                }

                openNoUserDefsDialog(anchor);
            </script>
        ";

        return $dialogScript;
    }
}

/**
 * getWindowJSStyleRefs()
 *
 * @return
 */
function getWindowJSStyleRefs(){
    $result = array('<link href="/javascript/windows-js/themes/default.css" rel="stylesheet" type="text/css" />',
                    '<link href="/javascript/windows-js/themes/alert.css" rel="stylesheet" type="text/css" />',
                    '<link href="/javascript/windows-js/themes/alphacube.css" rel="stylesheet" type="text/css" />');

    return $result;
}

/**
 * installPackageAuthNG()
 *
 * @return
 */
function installPackageAuthNG() {
    mwexec("cd / && /usr/bin/patch < /usr/local/pkg/authng-pfSenseHead.diff");
    mwexec("cd / && /usr/bin/patch < /usr/local/pkg/authng-fbegin.inc.diff");
    mwexec("cd / && /usr/bin/patch < /usr/local/pkg/authng-guiconfig.inc.diff");
    mwexec("cd / && /usr/bin/patch < /usr/local/pkg/authng-globals.inc.diff");
}

/**
 * deinstallPackageAuthNG()
 *
 * @return
 */
function deinstallPackageAuthNG() {
    mwexec("cd / && /usr/bin/patch -R < /usr/local/pkg/authng-pfSenseHead.diff");
    mwexec("cd / && /usr/bin/patch -R < /usr/local/pkg/authng-fbegin.inc.diff");
    mwexec("cd / && /usr/bin/patch -R < /usr/local/pkg/authng-guiconfig.inc.diff");
    mwexec("cd / && /usr/bin/patch -R < /usr/local/pkg/authng-globals.inc.diff");
}
?>