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<?php

/**
 * ManagePermissions handles all possible permission stuff.
 *
 * Simple Machines Forum (SMF)
 *
 * @package SMF
 * @author Simple Machines http://www.simplemachines.org
 * @copyright 2019 Simple Machines and individual contributors
 * @license http://www.simplemachines.org/about/smf/license.php BSD
 *
 * @version 2.1 RC1
 */

if (!defined('SMF'))
    die('No direct access...');

/**
 * Dispatches to the right function based on the given subaction.
 * Checks the permissions, based on the sub-action.
 * Called by ?action=managepermissions.
 *
 * uses ManagePermissions language file.
 */

function ModifyPermissions()
{
    global $txt, $context;

    loadLanguage('ManagePermissions+ManageMembers');
    loadTemplate('ManagePermissions');

    // Format: 'sub-action' => array('function_to_call', 'permission_needed'),
    $subActions = array(
        'board' => array('PermissionByBoard', 'manage_permissions'),
        'index' => array('PermissionIndex', 'manage_permissions'),
        'modify' => array('ModifyMembergroup', 'manage_permissions'),
        'modify2' => array('ModifyMembergroup2', 'manage_permissions'),
        'quick' => array('SetQuickGroups', 'manage_permissions'),
        'quickboard' => array('SetQuickBoards', 'manage_permissions'),
        'postmod' => array('ModifyPostModeration', 'manage_permissions'),
        'profiles' => array('EditPermissionProfiles', 'manage_permissions'),
        'settings' => array('GeneralPermissionSettings', 'admin_forum'),
    );

    $_REQUEST['sa'] = isset($_REQUEST['sa']) && isset($subActions[$_REQUEST['sa']]) && empty($subActions[$_REQUEST['sa']]['disabled']) ? $_REQUEST['sa'] : (allowedTo('manage_permissions') ? 'index' : 'settings');
    isAllowedTo($subActions[$_REQUEST['sa']][1]);

    // Create the tabs for the template.
    $context[$context['admin_menu_name']]['tab_data'] = array(
        'title' => $txt['permissions_title'],
        'help' => 'permissions',
        'description' => '',
        'tabs' => array(
            'index' => array(
                'description' => $txt['permissions_groups'],
            ),
            'board' => array(
                'description' => $txt['permission_by_board_desc'],
            ),
            'profiles' => array(
                'description' => $txt['permissions_profiles_desc'],
            ),
            'postmod' => array(
                'description' => $txt['permissions_post_moderation_desc'],
            ),
            'settings' => array(
                'description' => $txt['permission_settings_desc'],
            ),
        ),
    );

    call_integration_hook('integrate_manage_permissions', array(&$subActions));

    call_helper($subActions[$_REQUEST['sa']][0]);
}

/**
 * Sets up the permissions by membergroup index page.
 * Called by ?action=managepermissions
 * Creates an array of all the groups with the number of members and permissions.
 *
 * uses ManagePermissions language file.
 * uses ManagePermissions template file.
 * uses ManageBoards template, permission_index sub-template.
 */
function PermissionIndex()
{
    global $txt, $scripturl, $context, $settings, $modSettings, $smcFunc;

    $context['page_title'] = $txt['permissions_title'];

    // Load all the permissions. We'll need them in the template.
    loadAllPermissions();

    // Also load profiles, we may want to reset.
    loadPermissionProfiles();

    // Are we going to show the advanced options?
    $context['show_advanced_options'] = empty($context['admin_preferences']['app']);

    // Determine the number of ungrouped members.
    $request = $smcFunc['db_query']('', '
        SELECT COUNT(*)
        FROM {db_prefix}members
        WHERE id_group = {int:regular_group}',
        array(
            'regular_group' => 0,
        )
    );
    list ($num_members) = $smcFunc['db_fetch_row']($request);
    $smcFunc['db_free_result']($request);

    // Fill the context variable with 'Guests' and 'Regular Members'.
    $context['groups'] = array(
        -1 => array(
            'id' => -1,
            'name' => $txt['membergroups_guests'],
            'num_members' => $txt['membergroups_guests_na'],
            'allow_delete' => false,
            'allow_modify' => true,
            'can_search' => false,
            'href' => '',
            'link' => '',
            'help' => 'membergroup_guests',
            'is_post_group' => false,
            'color' => '',
            'icons' => '',
            'children' => array(),
            'num_permissions' => array(
                'allowed' => 0,
                // Can't deny guest permissions!
                'denied' => '(' . $txt['permissions_none'] . ')'
            ),
            'access' => false
        ),
        0 => array(
            'id' => 0,
            'name' => $txt['membergroups_members'],
            'num_members' => $num_members,
            'allow_delete' => false,
            'allow_modify' => true,
            'can_search' => false,
            'href' => $scripturl . '?action=moderate;area=viewgroups;sa=members;group=0',
            'help' => 'membergroup_regular_members',
            'is_post_group' => false,
            'color' => '',
            'icons' => '',
            'children' => array(),
            'num_permissions' => array(
                'allowed' => 0,
                'denied' => 0
            ),
            'access' => false
        ),
    );

    $postGroups = array();
    $normalGroups = array();

    // Query the database defined membergroups.
    $query = $smcFunc['db_query']('', '
        SELECT id_group, id_parent, group_name, min_posts, online_color, icons
        FROM {db_prefix}membergroups' . (empty($modSettings['permission_enable_postgroups']) ? '
        WHERE min_posts = {int:min_posts}' : '') . '
        ORDER BY id_parent = {int:not_inherited} DESC, min_posts, CASE WHEN id_group < {int:newbie_group} THEN id_group ELSE 4 END, group_name',
        array(
            'min_posts' => -1,
            'not_inherited' => -2,
            'newbie_group' => 4,
        )
    );
    while ($row = $smcFunc['db_fetch_assoc']($query))
    {
        // If it's inherited, just add it as a child.
        if ($row['id_parent'] != -2)
        {
            if (isset($context['groups'][$row['id_parent']]))
                $context['groups'][$row['id_parent']]['children'][$row['id_group']] = $row['group_name'];
            continue;
        }

        $row['icons'] = explode('#', $row['icons']);
        $context['groups'][$row['id_group']] = array(
            'id' => $row['id_group'],
            'name' => $row['group_name'],
            'num_members' => $row['id_group'] != 3 ? 0 : $txt['membergroups_guests_na'],
            'allow_delete' => $row['id_group'] > 4,
            'allow_modify' => $row['id_group'] > 1,
            'can_search' => $row['id_group'] != 3,
            'href' => $scripturl . '?action=moderate;area=viewgroups;sa=members;group=' . $row['id_group'],
            'help' => $row['id_group'] == 1 ? 'membergroup_administrator' : ($row['id_group'] == 3 ? 'membergroup_moderator' : ''),
            'is_post_group' => $row['min_posts'] != -1,
            'color' => empty($row['online_color']) ? '' : $row['online_color'],
            'icons' => !empty($row['icons'][0]) && !empty($row['icons'][1]) ? str_repeat('<img src="' . $settings['images_url'] . '/' . $row['icons'][1] . '" alt="*">', $row['icons'][0]) : '',
            'children' => array(),
            'num_permissions' => array(
                'allowed' => $row['id_group'] == 1 ? '(' . $txt['permissions_all'] . ')' : 0,
                'denied' => $row['id_group'] == 1 ? '(' . $txt['permissions_none'] . ')' : 0
            ),
            'access' => false,
        );

        if ($row['min_posts'] == -1)
            $normalGroups[$row['id_group']] = $row['id_group'];
        else
            $postGroups[$row['id_group']] = $row['id_group'];
    }
    $smcFunc['db_free_result']($query);

    // Get the number of members in this post group.
    if (!empty($postGroups))
    {
        $query = $smcFunc['db_query']('', '
            SELECT id_post_group AS id_group, COUNT(*) AS num_members
            FROM {db_prefix}members
            WHERE id_post_group IN ({array_int:post_group_list})
            GROUP BY id_post_group',
            array(
                'post_group_list' => $postGroups,
            )
        );
        while ($row = $smcFunc['db_fetch_assoc']($query))
            $context['groups'][$row['id_group']]['num_members'] += $row['num_members'];
        $smcFunc['db_free_result']($query);
    }

    if (!empty($normalGroups))
    {
        // First, the easy one!
        $query = $smcFunc['db_query']('', '
            SELECT id_group, COUNT(*) AS num_members
            FROM {db_prefix}members
            WHERE id_group IN ({array_int:normal_group_list})
            GROUP BY id_group',
            array(
                'normal_group_list' => $normalGroups,
            )
        );
        while ($row = $smcFunc['db_fetch_assoc']($query))
            $context['groups'][$row['id_group']]['num_members'] += $row['num_members'];
        $smcFunc['db_free_result']($query);

        // This one is slower, but it's okay... careful not to count twice!
        $query = $smcFunc['db_query']('', '
            SELECT mg.id_group, COUNT(*) AS num_members
            FROM {db_prefix}membergroups AS mg
                INNER JOIN {db_prefix}members AS mem ON (mem.additional_groups != {string:blank_string}
                    AND mem.id_group != mg.id_group
                    AND FIND_IN_SET(mg.id_group, mem.additional_groups) != 0)
            WHERE mg.id_group IN ({array_int:normal_group_list})
            GROUP BY mg.id_group',
            array(
                'normal_group_list' => $normalGroups,
                'blank_string' => '',
            )
        );
        while ($row = $smcFunc['db_fetch_assoc']($query))
            $context['groups'][$row['id_group']]['num_members'] += $row['num_members'];
        $smcFunc['db_free_result']($query);
    }

    foreach ($context['groups'] as $id => $data)
    {
        if ($data['href'] != '')
            $context['groups'][$id]['link'] = '<a href="' . $data['href'] . '">' . $data['num_members'] . '</a>';
    }

    if (empty($_REQUEST['pid']))
    {
        $request = $smcFunc['db_query']('', '
            SELECT id_group, COUNT(*) AS num_permissions, add_deny
            FROM {db_prefix}permissions
            ' . (empty($context['hidden_permissions']) ? '' : ' WHERE permission NOT IN ({array_string:hidden_permissions})') . '
            GROUP BY id_group, add_deny',
            array(
                'hidden_permissions' => !empty($context['hidden_permissions']) ? $context['hidden_permissions'] : array(),
            )
        );
        while ($row = $smcFunc['db_fetch_assoc']($request))
            if (isset($context['groups'][(int) $row['id_group']]) && (!empty($row['add_deny']) || $row['id_group'] != -1))
                $context['groups'][(int) $row['id_group']]['num_permissions'][empty($row['add_deny']) ? 'denied' : 'allowed'] = $row['num_permissions'];
        $smcFunc['db_free_result']($request);

        // Get the "default" profile permissions too.
        $request = $smcFunc['db_query']('', '
            SELECT id_profile, id_group, COUNT(*) AS num_permissions, add_deny
            FROM {db_prefix}board_permissions
            WHERE id_profile = {int:default_profile}
            ' . (empty($context['hidden_permissions']) ? '' : ' AND permission NOT IN ({array_string:hidden_permissions})') . '
            GROUP BY id_profile, id_group, add_deny',
            array(
                'default_profile' => 1,
                'hidden_permissions' => !empty($context['hidden_permissions']) ? $context['hidden_permissions'] : array(),
            )
        );
        while ($row = $smcFunc['db_fetch_assoc']($request))
        {
            if (isset($context['groups'][(int) $row['id_group']]) && (!empty($row['add_deny']) || $row['id_group'] != -1))
                $context['groups'][(int) $row['id_group']]['num_permissions'][empty($row['add_deny']) ? 'denied' : 'allowed'] += $row['num_permissions'];
        }
        $smcFunc['db_free_result']($request);
    }
    else
    {
        $_REQUEST['pid'] = (int) $_REQUEST['pid'];

        if (!isset($context['profiles'][$_REQUEST['pid']]))
            fatal_lang_error('no_access', false);

        // Change the selected tab to better reflect that this really is a board profile.
        $context[$context['admin_menu_name']]['current_subsection'] = 'profiles';

        $request = $smcFunc['db_query']('', '
            SELECT id_profile, id_group, COUNT(*) AS num_permissions, add_deny
            FROM {db_prefix}board_permissions
            WHERE id_profile = {int:current_profile}
            GROUP BY id_profile, id_group, add_deny',
            array(
                'current_profile' => $_REQUEST['pid'],
            )
        );
        while ($row = $smcFunc['db_fetch_assoc']($request))
        {
            if (isset($context['groups'][(int) $row['id_group']]) && (!empty($row['add_deny']) || $row['id_group'] != -1))
                $context['groups'][(int) $row['id_group']]['num_permissions'][empty($row['add_deny']) ? 'denied' : 'allowed'] += $row['num_permissions'];
        }
        $smcFunc['db_free_result']($request);

        $context['profile'] = array(
            'id' => $_REQUEST['pid'],
            'name' => $context['profiles'][$_REQUEST['pid']]['name'],
        );
    }

    // We can modify any permission set apart from the read only, reply only and no polls ones as they are redefined.
    $context['can_modify'] = empty($_REQUEST['pid']) || $_REQUEST['pid'] == 1 || $_REQUEST['pid'] > 4;

    // Load the proper template.
    $context['sub_template'] = 'permission_index';
    createToken('admin-mpq');
}

/**
 * Handle permissions by board... more or less. :P
 */
function PermissionByBoard()
{
    global $context, $txt, $smcFunc, $sourcedir, $cat_tree, $boardList, $boards;

    $context['page_title'] = $txt['permissions_boards'];
    $context['edit_all'] = isset($_GET['edit']);

    // Saving?
    if (!empty($_POST['save_changes']) && !empty($_POST['boardprofile']))
    {
        checkSession('request');
        validateToken('admin-mpb');

        $changes = array();
        foreach ($_POST['boardprofile'] as $pBoard => $profile)
        {
            $changes[(int) $profile][] = (int) $pBoard;
        }

        if (!empty($changes))
        {
            foreach ($changes as $profile => $boards)
                $smcFunc['db_query']('', '
                    UPDATE {db_prefix}boards
                    SET id_profile = {int:current_profile}
                    WHERE id_board IN ({array_int:board_list})',
                    array(
                        'board_list' => $boards,
                        'current_profile' => $profile,
                    )
                );
        }

        $context['edit_all'] = false;
    }

    // Load all permission profiles.
    loadPermissionProfiles();

    // Get the board tree.
    require_once($sourcedir . '/Subs-Boards.php');

    getBoardTree();

    // Build the list of the boards.
    $context['categories'] = array();
    foreach ($cat_tree as $catid => $tree)
    {
        $context['categories'][$catid] = array(
            'name' => &$tree['node']['name'],
            'id' => &$tree['node']['id'],
            'boards' => array()
        );
        foreach ($boardList[$catid] as $boardid)
        {
            if (!isset($context['profiles'][$boards[$boardid]['profile']]))
                $boards[$boardid]['profile'] = 1;

            $context['categories'][$catid]['boards'][$boardid] = array(
                'id' => &$boards[$boardid]['id'],
                'name' => &$boards[$boardid]['name'],
                'description' => &$boards[$boardid]['description'],
                'child_level' => &$boards[$boardid]['level'],
                'profile' => &$boards[$boardid]['profile'],
                'profile_name' => $context['profiles'][$boards[$boardid]['profile']]['name'],
            );
        }
    }

    $context['sub_template'] = 'by_board';
    createToken('admin-mpb');
}

/**
 * Handles permission modification actions from the upper part of the
 * permission manager index.
 */
function SetQuickGroups()
{
    global $context, $smcFunc;

    checkSession();
    validateToken('admin-mpq', 'quick');

    loadIllegalPermissions();
    loadIllegalGuestPermissions();
    loadIllegalBBCHtmlGroups();

    // Make sure only one of the quick options was selected.
    if ((!empty($_POST['predefined']) && ((isset($_POST['copy_from']) && $_POST['copy_from'] != 'empty') || !empty($_POST['permissions']))) || (!empty($_POST['copy_from']) && $_POST['copy_from'] != 'empty' && !empty($_POST['permissions'])))
        fatal_lang_error('permissions_only_one_option', false);

    if (empty($_POST['group']) || !is_array($_POST['group']))
        $_POST['group'] = array();

    // Only accept numeric values for selected membergroups.
    foreach ($_POST['group'] as $id => $group_id)
        $_POST['group'][$id] = (int) $group_id;
    $_POST['group'] = array_unique($_POST['group']);

    if (empty($_REQUEST['pid']))
        $_REQUEST['pid'] = 0;
    else
        $_REQUEST['pid'] = (int) $_REQUEST['pid'];

    // Fix up the old global to the new default!
    $bid = max(1, $_REQUEST['pid']);

    // No modifying the predefined profiles.
    if ($_REQUEST['pid'] > 1 && $_REQUEST['pid'] < 5)
        fatal_lang_error('no_access', false);

    // Clear out any cached authority.
    updateSettings(array('settings_updated' => time()));

    // No groups were selected.
    if (empty($_POST['group']))
        redirectexit('action=admin;area=permissions;pid=' . $_REQUEST['pid']);

    // Set a predefined permission profile.
    if (!empty($_POST['predefined']))
    {
        // Make sure it's a predefined permission set we expect.
        if (!in_array($_POST['predefined'], array('restrict', 'standard', 'moderator', 'maintenance')))
            redirectexit('action=admin;area=permissions;pid=' . $_REQUEST['pid']);

        foreach ($_POST['group'] as $group_id)
        {
            if (!empty($_REQUEST['pid']))
                setPermissionLevel($_POST['predefined'], $group_id, $_REQUEST['pid']);
            else
                setPermissionLevel($_POST['predefined'], $group_id);
        }
    }
    // Set a permission profile based on the permissions of a selected group.
    elseif ($_POST['copy_from'] != 'empty')
    {
        // Just checking the input.
        if (!is_numeric($_POST['copy_from']))
            redirectexit('action=admin;area=permissions;pid=' . $_REQUEST['pid']);

        // Make sure the group we're copying to is never included.
        $_POST['group'] = array_diff($_POST['group'], array($_POST['copy_from']));

        // No groups left? Too bad.
        if (empty($_POST['group']))
            redirectexit('action=admin;area=permissions;pid=' . $_REQUEST['pid']);

        if (empty($_REQUEST['pid']))
        {
            // Retrieve current permissions of group.
            $request = $smcFunc['db_query']('', '
                SELECT permission, add_deny
                FROM {db_prefix}permissions
                WHERE id_group = {int:copy_from}',
                array(
                    'copy_from' => $_POST['copy_from'],
                )
            );
            $target_perm = array();
            while ($row = $smcFunc['db_fetch_assoc']($request))
                $target_perm[$row['permission']] = $row['add_deny'];
            $smcFunc['db_free_result']($request);

            $inserts = array();
            foreach ($_POST['group'] as $group_id)
                foreach ($target_perm as $perm => $add_deny)
                {
                    // No dodgy permissions please!
                    if (!empty($context['illegal_permissions']) && in_array($perm, $context['illegal_permissions']))
                        continue;
                    if (isset($context['permissions_excluded'][$perm]) && in_array($group_id, $context['permissions_excluded'][$perm]))
                        continue;

                    if ($group_id != 1 && $group_id != 3)
                        $inserts[] = array($perm, $group_id, $add_deny);
                }

            // Delete the previous permissions...
            $smcFunc['db_query']('', '
                DELETE FROM {db_prefix}permissions
                WHERE id_group IN ({array_int:group_list})
                    ' . (empty($context['illegal_permissions']) ? '' : ' AND permission NOT IN ({array_string:illegal_permissions})'),
                array(
                    'group_list' => $_POST['group'],
                    'illegal_permissions' => !empty($context['illegal_permissions']) ? $context['illegal_permissions'] : array(),
                )
            );

            if (!empty($inserts))
            {
                // ..and insert the new ones.
                $smcFunc['db_insert']('',
                    '{db_prefix}permissions',
                    array(
                        'permission' => 'string', 'id_group' => 'int', 'add_deny' => 'int',
                    ),
                    $inserts,
                    array('permission', 'id_group')
                );
            }
        }

        // Now do the same for the board permissions.
        $request = $smcFunc['db_query']('', '
            SELECT permission, add_deny
            FROM {db_prefix}board_permissions
            WHERE id_group = {int:copy_from}
                AND id_profile = {int:current_profile}',
            array(
                'copy_from' => $_POST['copy_from'],
                'current_profile' => $bid,
            )
        );
        $target_perm = array();
        while ($row = $smcFunc['db_fetch_assoc']($request))
            $target_perm[$row['permission']] = $row['add_deny'];
        $smcFunc['db_free_result']($request);

        $inserts = array();
        foreach ($_POST['group'] as $group_id)
            foreach ($target_perm as $perm => $add_deny)
            {
                // Are these for guests?
                if ($group_id == -1 && in_array($perm, $context['non_guest_permissions']))
                    continue;

                $inserts[] = array($perm, $group_id, $bid, $add_deny);
            }

        // Delete the previous global board permissions...
        $smcFunc['db_query']('', '
            DELETE FROM {db_prefix}board_permissions
            WHERE id_group IN ({array_int:current_group_list})
                AND id_profile = {int:current_profile}',
            array(
                'current_group_list' => $_POST['group'],
                'current_profile' => $bid,
            )
        );

        // And insert the copied permissions.
        if (!empty($inserts))
        {
            // ..and insert the new ones.
            $smcFunc['db_insert']('',
                '{db_prefix}board_permissions',
                array('permission' => 'string', 'id_group' => 'int', 'id_profile' => 'int', 'add_deny' => 'int'),
                $inserts,
                array('permission', 'id_group', 'id_profile')
            );
        }

        // Update any children out there!
        updateChildPermissions($_POST['group'], $_REQUEST['pid']);
    }
    // Set or unset a certain permission for the selected groups.
    elseif (!empty($_POST['permissions']))
    {
        // Unpack two variables that were transported.
        list ($permissionType, $permission) = explode('/', $_POST['permissions']);

        // Check whether our input is within expected range.
        if (!in_array($_POST['add_remove'], array('add', 'clear', 'deny')) || !in_array($permissionType, array('membergroup', 'board')))
            redirectexit('action=admin;area=permissions;pid=' . $_REQUEST['pid']);

        if ($_POST['add_remove'] == 'clear')
        {
            if ($permissionType == 'membergroup')
            {
                $smcFunc['db_query']('', '
                    DELETE FROM {db_prefix}permissions
                    WHERE id_group IN ({array_int:current_group_list})
                        AND permission = {string:current_permission}
                        ' . (empty($context['illegal_permissions']) ? '' : ' AND permission NOT IN ({array_string:illegal_permissions})'),
                    array(
                        'current_group_list' => $_POST['group'],
                        'current_permission' => $permission,
                        'illegal_permissions' => !empty($context['illegal_permissions']) ? $context['illegal_permissions'] : array(),
                    )
                );

                // Did these changes make anyone lose eligibility for the bbc_html permission?
                if (!empty(array_diff($_POST['group'], $context['permissions_excluded']['bbc_html'])))
                    removeIllegalBBCHtmlPermission(true);
            }
            else
                $smcFunc['db_query']('', '
                    DELETE FROM {db_prefix}board_permissions
                    WHERE id_group IN ({array_int:current_group_list})
                        AND id_profile = {int:current_profile}
                        AND permission = {string:current_permission}',
                    array(
                        'current_group_list' => $_POST['group'],
                        'current_profile' => $bid,
                        'current_permission' => $permission,
                    )
                );
        }
        // Add a permission (either 'set' or 'deny').
        else
        {
            $add_deny = $_POST['add_remove'] == 'add' ? '1' : '0';
            $permChange = array();
            foreach ($_POST['group'] as $groupID)
            {
                if (isset($context['permissions_excluded'][$permission]) && in_array($groupID, $context['permissions_excluded'][$permission]))
                    continue;

                if ($permissionType == 'membergroup' && $groupID != 1 && $groupID != 3 && (empty($context['illegal_permissions']) || !in_array($permission, $context['illegal_permissions'])))
                    $permChange[] = array($permission, $groupID, $add_deny);
                elseif ($permissionType != 'membergroup')
                    $permChange[] = array($permission, $groupID, $bid, $add_deny);
            }

            if (!empty($permChange))
            {
                if ($permissionType == 'membergroup')
                    $smcFunc['db_insert']('replace',
                        '{db_prefix}permissions',
                        array('permission' => 'string', 'id_group' => 'int', 'add_deny' => 'int'),
                        $permChange,
                        array('permission', 'id_group')
                    );
                // Board permissions go into the other table.
                else
                    $smcFunc['db_insert']('replace',
                        '{db_prefix}board_permissions',
                        array('permission' => 'string', 'id_group' => 'int', 'id_profile' => 'int', 'add_deny' => 'int'),
                        $permChange,
                        array('permission', 'id_group', 'id_profile')
                    );
            }
        }

        // Another child update!
        updateChildPermissions($_POST['group'], $_REQUEST['pid']);
    }

    redirectexit('action=admin;area=permissions;pid=' . $_REQUEST['pid']);
}

/**
 * Initializes the necessary to modify a membergroup's permissions.
 */
function ModifyMembergroup()
{
    global $context, $txt, $smcFunc, $modSettings;

    if (!isset($_GET['group']))
        fatal_lang_error('no_access', false);

    $context['group']['id'] = (int) $_GET['group'];

    // It's not likely you'd end up here with this setting disabled.
    if ($_GET['group'] == 1)
        redirectexit('action=admin;area=permissions');

    loadAllPermissions();
    loadPermissionProfiles();
    $context['hidden_perms'] = array();

    if ($context['group']['id'] > 0)
    {
        $result = $smcFunc['db_query']('', '
            SELECT group_name, id_parent
            FROM {db_prefix}membergroups
            WHERE id_group = {int:current_group}
            LIMIT 1',
            array(
                'current_group' => $context['group']['id'],
            )
        );
        list ($context['group']['name'], $parent) = $smcFunc['db_fetch_row']($result);
        $smcFunc['db_free_result']($result);

        // Cannot edit an inherited group!
        if ($parent != -2)
            fatal_lang_error('cannot_edit_permissions_inherited');
    }
    elseif ($context['group']['id'] == -1)
        $context['group']['name'] = $txt['membergroups_guests'];
    else
        $context['group']['name'] = $txt['membergroups_members'];

    $context['profile']['id'] = empty($_GET['pid']) ? 0 : (int) $_GET['pid'];

    // If this is a moderator and they are editing "no profile" then we only do boards.
    if ($context['group']['id'] == 3 && empty($context['profile']['id']))
    {
        // For sanity just check they have no general permissions.
        $smcFunc['db_query']('', '
            DELETE FROM {db_prefix}permissions
            WHERE id_group = {int:moderator_group}',
            array(
                'moderator_group' => 3,
            )
        );

        $context['profile']['id'] = 1;
    }

    $context['permission_type'] = empty($context['profile']['id']) ? 'membergroup' : 'board';
    $context['profile']['can_modify'] = !$context['profile']['id'] || $context['profiles'][$context['profile']['id']]['can_modify'];

    // Set up things a little nicer for board related stuff...
    if ($context['permission_type'] == 'board')
    {
        $context['profile']['name'] = $context['profiles'][$context['profile']['id']]['name'];
        $context[$context['admin_menu_name']]['current_subsection'] = 'profiles';
    }

    // Fetch the current permissions.
    $permissions = array(
        'membergroup' => array('allowed' => array(), 'denied' => array()),
        'board' => array('allowed' => array(), 'denied' => array())
    );

    // General permissions?
    if ($context['permission_type'] == 'membergroup')
    {
        $result = $smcFunc['db_query']('', '
            SELECT permission, add_deny
            FROM {db_prefix}permissions
            WHERE id_group = {int:current_group}',
            array(
                'current_group' => $_GET['group'],
            )
        );
        while ($row = $smcFunc['db_fetch_assoc']($result))
            $permissions['membergroup'][empty($row['add_deny']) ? 'denied' : 'allowed'][] = $row['permission'];
        $smcFunc['db_free_result']($result);
    }

    // Fetch current board permissions...
    $result = $smcFunc['db_query']('', '
        SELECT permission, add_deny
        FROM {db_prefix}board_permissions
        WHERE id_group = {int:current_group}
            AND id_profile = {int:current_profile}',
        array(
            'current_group' => $context['group']['id'],
            'current_profile' => $context['permission_type'] == 'membergroup' ? 1 : $context['profile']['id'],
        )
    );
    while ($row = $smcFunc['db_fetch_assoc']($result))
        $permissions['board'][empty($row['add_deny']) ? 'denied' : 'allowed'][] = $row['permission'];
    $smcFunc['db_free_result']($result);

    // Loop through each permission and set whether it's checked.
    foreach ($context['permissions'] as $permissionType => $tmp)
    {
        foreach ($tmp['columns'] as $position => $permissionGroups)
        {
            foreach ($permissionGroups as $permissionGroup => $permissionArray)
            {
                foreach ($permissionArray['permissions'] as $perm)
                {
                    // Create a shortcut for the current permission.
                    $curPerm = &$context['permissions'][$permissionType]['columns'][$position][$permissionGroup]['permissions'][$perm['id']];

                    if ($perm['has_own_any'])
                    {
                        $curPerm['any']['select'] = in_array($perm['id'] . '_any', $permissions[$permissionType]['allowed']) ? 'on' : (in_array($perm['id'] . '_any', $permissions[$permissionType]['denied']) ? 'deny' : 'off');
                        $curPerm['own']['select'] = in_array($perm['id'] . '_own', $permissions[$permissionType]['allowed']) ? 'on' : (in_array($perm['id'] . '_own', $permissions[$permissionType]['denied']) ? 'deny' : 'off');
                    }
                    else
                        $curPerm['select'] = in_array($perm['id'], $permissions[$permissionType]['denied']) ? 'deny' : (in_array($perm['id'], $permissions[$permissionType]['allowed']) ? 'on' : 'off');

                    // Keep the last value if it's hidden.
                    if ($perm['hidden'] || $permissionArray['hidden'])
                    {
                        if ($perm['has_own_any'])
                        {
                            $context['hidden_perms'][] = array(
                                $permissionType,
                                $perm['own']['id'],
                                $curPerm['own']['select'] == 'deny' && !empty($modSettings['permission_enable_deny']) ? 'deny' : $curPerm['own']['select'],
                            );
                            $context['hidden_perms'][] = array(
                                $permissionType,
                                $perm['any']['id'],
                                $curPerm['any']['select'] == 'deny' && !empty($modSettings['permission_enable_deny']) ? 'deny' : $curPerm['any']['select'],
                            );
                        }
                        else
                            $context['hidden_perms'][] = array(
                                $permissionType,
                                $perm['id'],
                                $curPerm['select'] == 'deny' && !empty($modSettings['permission_enable_deny']) ? 'deny' : $curPerm['select'],
                            );
                    }
                }
            }
        }
    }
    $context['sub_template'] = 'modify_group';
    $context['page_title'] = $txt['permissions_modify_group'];

    createToken('admin-mp');
}

/**
 * This function actually saves modifications to a membergroup's board permissions.
 */
function ModifyMembergroup2()
{
    global $smcFunc, $context;

    checkSession();
    validateToken('admin-mp');

    loadIllegalPermissions();

    $_GET['group'] = (int) $_GET['group'];
    $_GET['pid'] = (int) $_GET['pid'];

    // Cannot modify predefined profiles.
    if ($_GET['pid'] > 1 && $_GET['pid'] < 5)
        fatal_lang_error('no_access', false);

    // Verify this isn't inherited.
    if ($_GET['group'] == -1 || $_GET['group'] == 0)
        $parent = -2;
    else
    {
        $result = $smcFunc['db_query']('', '
            SELECT id_parent
            FROM {db_prefix}membergroups
            WHERE id_group = {int:current_group}
            LIMIT 1',
            array(
                'current_group' => $_GET['group'],
            )
        );
        list ($parent) = $smcFunc['db_fetch_row']($result);
        $smcFunc['db_free_result']($result);
    }

    if ($parent != -2)
        fatal_lang_error('cannot_edit_permissions_inherited');

    $givePerms = array('membergroup' => array(), 'board' => array());

    // Guest group, we need illegal, guest permissions.
    if ($_GET['group'] == -1)
    {
        loadIllegalGuestPermissions();
        $context['illegal_permissions'] = array_merge($context['illegal_permissions'], $context['non_guest_permissions']);
    }

    // Prepare all permissions that were set or denied for addition to the DB.
    if (isset($_POST['perm']) && is_array($_POST['perm']))
    {
        foreach ($_POST['perm'] as $perm_type => $perm_array)
        {
            if (is_array($perm_array))
            {
                foreach ($perm_array as $permission => $value)
                    if ($value == 'on' || $value == 'deny')
                    {
                        // Don't allow people to escalate themselves!
                        if (!empty($context['illegal_permissions']) && in_array($permission, $context['illegal_permissions']))
                            continue;

                        $givePerms[$perm_type][] = array($_GET['group'], $permission, $value == 'deny' ? 0 : 1);
                    }
            }
        }
    }

    // Insert the general permissions.
    if ($_GET['group'] != 3 && empty($_GET['pid']))
    {
        $smcFunc['db_query']('', '
            DELETE FROM {db_prefix}permissions
            WHERE id_group = {int:current_group}
            ' . (empty($context['illegal_permissions']) ? '' : ' AND permission NOT IN ({array_string:illegal_permissions})'),
            array(
                'current_group' => $_GET['group'],
                'illegal_permissions' => !empty($context['illegal_permissions']) ? $context['illegal_permissions'] : array(),
            )
        );

        if (!empty($givePerms['membergroup']))
        {
            $smcFunc['db_insert']('replace',
                '{db_prefix}permissions',
                array('id_group' => 'int', 'permission' => 'string', 'add_deny' => 'int'),
                $givePerms['membergroup'],
                array('id_group', 'permission')
            );
        }
    }

    // Insert the boardpermissions.
    $profileid = max(1, $_GET['pid']);
    $smcFunc['db_query']('', '
        DELETE FROM {db_prefix}board_permissions
        WHERE id_group = {int:current_group}
            AND id_profile = {int:current_profile}',
        array(
            'current_group' => $_GET['group'],
            'current_profile' => $profileid,
        )
    );
    if (!empty($givePerms['board']))
    {
        foreach ($givePerms['board'] as $k => $v)
            $givePerms['board'][$k][] = $profileid;

        $smcFunc['db_insert']('replace',
            '{db_prefix}board_permissions',
            array('id_group' => 'int', 'permission' => 'string', 'add_deny' => 'int', 'id_profile' => 'int'),
            $givePerms['board'],
            array('id_group', 'permission', 'id_profile')
        );
    }

    // Update any inherited permissions as required.
    updateChildPermissions($_GET['group'], $_GET['pid']);

    removeIllegalBBCHtmlPermission();

    // Clear cached privs.
    updateSettings(array('settings_updated' => time()));

    redirectexit('action=admin;area=permissions;pid=' . $_GET['pid']);
}

/**
 * A screen to set some general settings for permissions.
 *
 * @param bool $return_config Whether to return the $config_vars array (used for admin search)
 * @return void|array Returns nothing or returns the config_vars array if $return_config is true
 */
function GeneralPermissionSettings($return_config = false)
{
    global $context, $modSettings, $sourcedir, $txt, $scripturl, $smcFunc;

    // All the setting variables
    $config_vars = array(
        array('title', 'settings'),
        // Inline permissions.
        array('permissions', 'manage_permissions'),
        '',

        // A few useful settings
        array('check', 'permission_enable_deny', 0, $txt['permission_settings_enable_deny'], 'help' => 'permissions_deny'),
        array('check', 'permission_enable_postgroups', 0, $txt['permission_settings_enable_postgroups'], 'help' => 'permissions_postgroups'),
    );

    call_integration_hook('integrate_modify_permission_settings', array(&$config_vars));

    if ($return_config)
        return $config_vars;

    $context['page_title'] = $txt['permission_settings_title'];
    $context['sub_template'] = 'show_settings';

    // Needed for the inline permission functions, and the settings template.
    require_once($sourcedir . '/ManageServer.php');

    $context['post_url'] = $scripturl . '?action=admin;area=permissions;save;sa=settings';

    // Saving the settings?
    if (isset($_GET['save']))
    {
        checkSession();
        call_integration_hook('integrate_save_permission_settings');
        saveDBSettings($config_vars);

        // Clear all deny permissions...if we want that.
        if (empty($modSettings['permission_enable_deny']))
        {
            $smcFunc['db_query']('', '
                DELETE FROM {db_prefix}permissions
                WHERE add_deny = {int:denied}',
                array(
                    'denied' => 0,
                )
            );
            $smcFunc['db_query']('', '
                DELETE FROM {db_prefix}board_permissions
                WHERE add_deny = {int:denied}',
                array(
                    'denied' => 0,
                )
            );
        }

        // Make sure there are no postgroup based permissions left.
        if (empty($modSettings['permission_enable_postgroups']))
        {
            // Get a list of postgroups.
            $post_groups = array();
            $request = $smcFunc['db_query']('', '
                SELECT id_group
                FROM {db_prefix}membergroups
                WHERE min_posts != {int:min_posts}',
                array(
                    'min_posts' => -1,
                )
            );
            while ($row = $smcFunc['db_fetch_assoc']($request))
                $post_groups[] = $row['id_group'];
            $smcFunc['db_free_result']($request);

            // Remove'em.
            $smcFunc['db_query']('', '
                DELETE FROM {db_prefix}permissions
                WHERE id_group IN ({array_int:post_group_list})',
                array(
                    'post_group_list' => $post_groups,
                )
            );
            $smcFunc['db_query']('', '
                DELETE FROM {db_prefix}board_permissions
                WHERE id_group IN ({array_int:post_group_list})',
                array(
                    'post_group_list' => $post_groups,
                )
            );
            $smcFunc['db_query']('', '
                UPDATE {db_prefix}membergroups
                SET id_parent = {int:not_inherited}
                WHERE id_parent IN ({array_int:post_group_list})',
                array(
                    'post_group_list' => $post_groups,
                    'not_inherited' => -2,
                )
            );
        }

        $_SESSION['adm-save'] = true;
        redirectexit('action=admin;area=permissions;sa=settings');
    }

    // We need this for the in-line permissions
    createToken('admin-mp');

    prepareDBSettingContext($config_vars);
}

/**
 * Set the permission level for a specific profile, group, or group for a profile.
 *
 * @internal
 *
 * @param string $level The level ('restrict', 'standard', etc.)
 * @param int $group The group to set the permission for
 * @param string|int $profile The ID of the permissions profile or 'null' if we're setting it for a group
 */
function setPermissionLevel($level, $group, $profile = 'null')
{
    global $smcFunc, $context;

    loadIllegalPermissions();
    loadIllegalGuestPermissions();
    loadIllegalBBCHtmlGroups();

    // Levels by group... restrict, standard, moderator, maintenance.
    $groupLevels = array(
        'board' => array('inherit' => array()),
        'group' => array('inherit' => array())
    );
    // Levels by board... standard, publish, free.
    $boardLevels = array('inherit' => array());

    // Restrictive - ie. guests.
    $groupLevels['global']['restrict'] = array(
        'search_posts',
        'calendar_view',
        'view_stats',
        'who_view',
        'profile_identity_own',
    );
    $groupLevels['board']['restrict'] = array(
        'poll_view',
        'post_new',
        'post_reply_own',
        'post_reply_any',
        'delete_own',
        'modify_own',
        'report_any',
    );

    // Standard - ie. members.  They can do anything Restrictive can.
    $groupLevels['global']['standard'] = array_merge($groupLevels['global']['restrict'], array(
        'view_mlist',
        'likes_like',
        'mention',
        'pm_read',
        'pm_send',
        'profile_view',
        'profile_extra_own',
        'profile_signature_own',
        'profile_forum_own',
        'profile_website_own',
        'profile_password_own',
        'profile_server_avatar',
        'profile_displayed_name',
        'profile_upload_avatar',
        'profile_remote_avatar',
        'profile_remove_own',
        'report_user',
    ));
    $groupLevels['board']['standard'] = array_merge($groupLevels['board']['restrict'], array(
        'poll_vote',
        'poll_edit_own',
        'poll_post',
        'poll_add_own',
        'post_attachment',
        'lock_own',
        'remove_own',
        'view_attachments',
    ));

    // Moderator - ie. moderators :P.  They can do what standard can, and more.
    $groupLevels['global']['moderator'] = array_merge($groupLevels['global']['standard'], array(
        'calendar_post',
        'calendar_edit_own',
        'access_mod_center',
        'issue_warning',
    ));
    $groupLevels['board']['moderator'] = array_merge($groupLevels['board']['standard'], array(
        'make_sticky',
        'poll_edit_any',
        'delete_any',
        'modify_any',
        'lock_any',
        'remove_any',
        'move_any',
        'merge_any',
        'split_any',
        'poll_lock_any',
        'poll_remove_any',
        'poll_add_any',
        'approve_posts',
    ));

    // Maintenance - wannabe admins.  They can do almost everything.
    $groupLevels['global']['maintenance'] = array_merge($groupLevels['global']['moderator'], array(
        'manage_attachments',
        'manage_smileys',
        'manage_boards',
        'moderate_forum',
        'manage_membergroups',
        'manage_bans',
        'admin_forum',
        'bbc_html',
        'manage_permissions',
        'edit_news',
        'calendar_edit_any',
        'profile_identity_any',
        'profile_extra_any',
        'profile_signature_any',
        'profile_website_any',
        'profile_displayed_name_any',
        'profile_password_any',
        'profile_title_any',
    ));
    $groupLevels['board']['maintenance'] = array_merge($groupLevels['board']['moderator'], array(
    ));

    // Standard - nothing above the group permissions. (this SHOULD be empty.)
    $boardLevels['standard'] = array(
    );

    // Locked - just that, you can't post here.
    $boardLevels['locked'] = array(
        'poll_view',
        'report_any',
        'view_attachments',
    );

    // Publisher - just a little more...
    $boardLevels['publish'] = array_merge($boardLevels['locked'], array(
        'post_new',
        'post_reply_own',
        'post_reply_any',
        'delete_own',
        'modify_own',
        'delete_replies',
        'modify_replies',
        'poll_vote',
        'poll_edit_own',
        'poll_post',
        'poll_add_own',
        'poll_remove_own',
        'post_attachment',
        'lock_own',
        'remove_own',
    ));

    // Free for All - Scary.  Just scary.
    $boardLevels['free'] = array_merge($boardLevels['publish'], array(
        'poll_lock_any',
        'poll_edit_any',
        'poll_add_any',
        'poll_remove_any',
        'make_sticky',
        'lock_any',
        'remove_any',
        'delete_any',
        'split_any',
        'merge_any',
        'modify_any',
        'approve_posts',
    ));

    call_integration_hook('integrate_load_permission_levels', array(&$groupLevels, &$boardLevels));

    // Make sure we're not granting someone too many permissions!
    foreach ($groupLevels['global'][$level] as $k => $permission)
    {
        if (!empty($context['illegal_permissions']) && in_array($permission, $context['illegal_permissions']))
            unset($groupLevels['global'][$level][$k]);

        if (isset($context['permissions_excluded'][$permission]) && in_array($group, $context['permissions_excluded'][$permission]))
            unset($groupLevels['global'][$level][$k]);
    }
    foreach ($groupLevels['board'][$level] as $k => $permission)
        if (isset($context['permissions_excluded'][$permission]) && in_array($group, $context['permissions_excluded'][$permission]))
            unset($groupLevels['board'][$level][$k]);

    // Reset all cached permissions.
    updateSettings(array('settings_updated' => time()));

    // Setting group permissions.
    if ($profile === 'null' && $group !== 'null')
    {
        $group = (int) $group;

        if (empty($groupLevels['global'][$level]))
            return;

        $smcFunc['db_query']('', '
            DELETE FROM {db_prefix}permissions
            WHERE id_group = {int:current_group}
            ' . (empty($context['illegal_permissions']) ? '' : ' AND permission NOT IN ({array_string:illegal_permissions})'),
            array(
                'current_group' => $group,
                'illegal_permissions' => !empty($context['illegal_permissions']) ? $context['illegal_permissions'] : array(),
            )
        );
        $smcFunc['db_query']('', '
            DELETE FROM {db_prefix}board_permissions
            WHERE id_group = {int:current_group}
                AND id_profile = {int:default_profile}',
            array(
                'current_group' => $group,
                'default_profile' => 1,
            )
        );

        $groupInserts = array();
        foreach ($groupLevels['global'][$level] as $permission)
            $groupInserts[] = array($group, $permission);

        $smcFunc['db_insert']('insert',
            '{db_prefix}permissions',
            array('id_group' => 'int', 'permission' => 'string'),
            $groupInserts,
            array('id_group')
        );

        $boardInserts = array();
        foreach ($groupLevels['board'][$level] as $permission)
            $boardInserts[] = array(1, $group, $permission);

        $smcFunc['db_insert']('insert',
            '{db_prefix}board_permissions',
            array('id_profile' => 'int', 'id_group' => 'int', 'permission' => 'string'),
            $boardInserts,
            array('id_profile', 'id_group')
        );

        removeIllegalBBCHtmlPermission();
    }
    // Setting profile permissions for a specific group.
    elseif ($profile !== 'null' && $group !== 'null' && ($profile == 1 || $profile > 4))
    {
        $group = (int) $group;
        $profile = (int) $profile;

        if (!empty($groupLevels['global'][$level]))
        {
            $smcFunc['db_query']('', '
                DELETE FROM {db_prefix}board_permissions
                WHERE id_group = {int:current_group}
                    AND id_profile = {int:current_profile}',
                array(
                    'current_group' => $group,
                    'current_profile' => $profile,
                )
            );
        }

        if (!empty($groupLevels['board'][$level]))
        {
            $boardInserts = array();
            foreach ($groupLevels['board'][$level] as $permission)
                $boardInserts[] = array($profile, $group, $permission);

            $smcFunc['db_insert']('insert',
                '{db_prefix}board_permissions',
                array('id_profile' => 'int', 'id_group' => 'int', 'permission' => 'string'),
                $boardInserts,
                array('id_profile', 'id_group')
            );
        }
    }
    // Setting profile permissions for all groups.
    elseif ($profile !== 'null' && $group === 'null' && ($profile == 1 || $profile > 4))
    {
        $profile = (int) $profile;

        $smcFunc['db_query']('', '
            DELETE FROM {db_prefix}board_permissions
            WHERE id_profile = {int:current_profile}',
            array(
                'current_profile' => $profile,
            )
        );

        if (empty($boardLevels[$level]))
            return;

        // Get all the groups...
        $query = $smcFunc['db_query']('', '
            SELECT id_group
            FROM {db_prefix}membergroups
            WHERE id_group > {int:moderator_group}
            ORDER BY min_posts, CASE WHEN id_group < {int:newbie_group} THEN id_group ELSE 4 END, group_name',
            array(
                'moderator_group' => 3,
                'newbie_group' => 4,
            )
        );
        while ($row = $smcFunc['db_fetch_row']($query))
        {
            $group = $row[0];

            $boardInserts = array();
            foreach ($boardLevels[$level] as $permission)
                $boardInserts[] = array($profile, $group, $permission);

            $smcFunc['db_insert']('insert',
                '{db_prefix}board_permissions',
                array('id_profile' => 'int', 'id_group' => 'int', 'permission' => 'string'),
                $boardInserts,
                array('id_profile', 'id_group')
            );
        }
        $smcFunc['db_free_result']($query);

        // Add permissions for ungrouped members.
        $boardInserts = array();
        foreach ($boardLevels[$level] as $permission)
            $boardInserts[] = array($profile, 0, $permission);

        $smcFunc['db_insert']('insert',
            '{db_prefix}board_permissions',
            array('id_profile' => 'int', 'id_group' => 'int', 'permission' => 'string'),
            $boardInserts,
            array('id_profile', 'id_group')
        );
    }
    // $profile and $group are both null!
    else
        fatal_lang_error('no_access', false);
}

/**
 * Load permissions into $context['permissions'].
 *
 * @internal
 */
function loadAllPermissions()
{
    global $context, $txt, $modSettings;

    // List of all the groups dependant on the currently selected view - for the order so it looks pretty, yea?
    // Note to Mod authors - you don't need to stick your permission group here if you don't mind SMF sticking it the last group of the page.
    $permissionGroups = array(
        'membergroup' => array(
            'general',
            'pm',
            'calendar',
            'maintenance',
            'member_admin',
            'profile',
            'likes',
            'mentions',
            'bbc',
        ),
        'board' => array(
            'general_board',
            'topic',
            'post',
            'poll',
            'notification',
            'attachment',
        ),
    );

    /*   The format of this list is as follows:
        'membergroup' => array(
            'permissions_inside' => array(has_multiple_options, view_group),
        ),
        'board' => array(
            'permissions_inside' => array(has_multiple_options, view_group),
        );
    */
    $permissionList = array(
        'membergroup' => array(
            'view_stats' => array(false, 'general'),
            'view_mlist' => array(false, 'general'),
            'who_view' => array(false, 'general'),
            'search_posts' => array(false, 'general'),
            'pm_read' => array(false, 'pm'),
            'pm_send' => array(false, 'pm'),
            'pm_draft' => array(false, 'pm'),
            'calendar_view' => array(false, 'calendar'),
            'calendar_post' => array(false, 'calendar'),
            'calendar_edit' => array(true, 'calendar'),
            'admin_forum' => array(false, 'maintenance'),
            'manage_boards' => array(false, 'maintenance'),
            'manage_attachments' => array(false, 'maintenance'),
            'manage_smileys' => array(false, 'maintenance'),
            'edit_news' => array(false, 'maintenance'),
            'access_mod_center' => array(false, 'maintenance'),
            'moderate_forum' => array(false, 'member_admin'),
            'manage_membergroups' => array(false, 'member_admin'),
            'manage_permissions' => array(false, 'member_admin'),
            'manage_bans' => array(false, 'member_admin'),
            'send_mail' => array(false, 'member_admin'),
            'issue_warning' => array(false, 'member_admin'),
            'profile_view' => array(false, 'profile'),
            'profile_forum' => array(true, 'profile'),
            'profile_extra' => array(true, 'profile'),
            'profile_signature' => array(true, 'profile'),
            'profile_website' => array(true, 'profile'),
            'profile_title' => array(true, 'profile'),
            'profile_blurb' => array(true, 'profile'),
            'profile_server_avatar' => array(false, 'profile'),
            'profile_upload_avatar' => array(false, 'profile'),
            'profile_remote_avatar' => array(false, 'profile'),
            'report_user' => array(false, 'profile'),
            'profile_identity' => array(true, 'profile_account'),
            'profile_displayed_name' => array(true, 'profile_account'),
            'profile_password' => array(true, 'profile_account'),
            'profile_remove' => array(true, 'profile_account'),
            'view_warning' => array(true, 'profile_account'),
            'likes_like' => array(false, 'likes'),
            'mention' => array(false, 'mentions'),
        ),
        'board' => array(
            'moderate_board' => array(false, 'general_board'),
            'approve_posts' => array(false, 'general_board'),
            'post_new' => array(false, 'topic'),
            'post_unapproved_topics' => array(false, 'topic'),
            'post_unapproved_replies' => array(true, 'topic'),
            'post_reply' => array(true, 'topic'),
            'post_draft' => array(false, 'topic'),
            'merge_any' => array(false, 'topic'),
            'split_any' => array(false, 'topic'),
            'make_sticky' => array(false, 'topic'),
            'move' => array(true, 'topic', 'moderate'),
            'lock' => array(true, 'topic', 'moderate'),
            'remove' => array(true, 'topic', 'modify'),
            'modify_replies' => array(false, 'topic'),
            'delete_replies' => array(false, 'topic'),
            'announce_topic' => array(false, 'topic'),
            'delete' => array(true, 'post'),
            'modify' => array(true, 'post'),
            'report_any' => array(false, 'post'),
            'poll_view' => array(false, 'poll'),
            'poll_vote' => array(false, 'poll'),
            'poll_post' => array(false, 'poll'),
            'poll_add' => array(true, 'poll'),
            'poll_edit' => array(true, 'poll'),
            'poll_lock' => array(true, 'poll'),
            'poll_remove' => array(true, 'poll'),
            'view_attachments' => array(false, 'attachment'),
            'post_unapproved_attachments' => array(false, 'attachment'),
            'post_attachment' => array(false, 'attachment'),
        ),
    );

    // In case a mod screwed things up...
    if (!in_array('html', $context['restricted_bbc']))
        $context['restricted_bbc'][] = 'html';

    // Add the permissions for the restricted BBCodes
    foreach ($context['restricted_bbc'] as $bbc)
    {
        $permissionList['membergroup']['bbc_' . $bbc] = array(false, 'bbc');
        $txt['permissionname_bbc_' . $bbc] = sprintf($txt['permissionname_bbc'], $bbc);
    }

    // All permission groups that will be shown in the left column on classic view.
    $leftPermissionGroups = array(
        'general',
        'calendar',
        'maintenance',
        'member_admin',
        'topic',
        'post',
    );

    // We need to know what permissions we can't give to guests.
    loadIllegalGuestPermissions();

    // We also need to know which groups can't be given the bbc_html permission.
    loadIllegalBBCHtmlGroups();

    // Some permissions are hidden if features are off.
    $hiddenPermissions = array();
    $relabelPermissions = array(); // Permissions to apply a different label to.
    if (empty($modSettings['cal_enabled']))
    {
        $hiddenPermissions[] = 'calendar_view';
        $hiddenPermissions[] = 'calendar_post';
        $hiddenPermissions[] = 'calendar_edit';
    }
    if ($modSettings['warning_settings'][0] == 0)
    {
        $hiddenPermissions[] = 'issue_warning';
        $hiddenPermissions[] = 'view_warning';
    }

    // Post moderation?
    if (!$modSettings['postmod_active'])
    {
        $hiddenPermissions[] = 'approve_posts';
        $hiddenPermissions[] = 'post_unapproved_topics';
        $hiddenPermissions[] = 'post_unapproved_replies';
        $hiddenPermissions[] = 'post_unapproved_attachments';
    }
    // If post moderation is enabled, these are named differently...
    else
    {
        // Relabel the topics permissions
        $relabelPermissions['post_new'] = 'auto_approve_topics';

        // Relabel the reply permissions
        $relabelPermissions['post_reply'] = 'auto_approve_replies';

        // Relabel the attachment permissions
        $relabelPermissions['post_attachment'] = 'auto_approve_attachments';
    }

    // Are attachments enabled?
    if (empty($modSettings['attachmentEnable']))
    {
        $hiddenPermissions[] = 'manage_attachments';
        $hiddenPermissions[] = 'view_attachments';
        $hiddenPermissions[] = 'post_unapproved_attachments';
        $hiddenPermissions[] = 'post_attachment';
    }

    // Hide Likes/Mentions permissions...
    if (empty($modSettings['enable_likes']))
    {
        $hiddenPermissions[] = 'likes_like';
    }
    if (empty($modSettings['enable_mentions']))
    {
        $hiddenPermissions[] = 'mention';
    }

    // Provide a practical way to modify permissions.
    call_integration_hook('integrate_load_permissions', array(&$permissionGroups, &$permissionList, &$leftPermissionGroups, &$hiddenPermissions, &$relabelPermissions));

    $permissionList['membergroup']['bbc_cowsay'] = array(false, 'bbc');
    $hiddenPermissions[] = 'bbc_cowsay';
    $txt['permissionname_bbc_cowsay'] = sprintf($txt['permissionname_bbc'], 'cowsay');

    $context['permissions'] = array();
    $context['hidden_permissions'] = array();
    foreach ($permissionList as $permissionType => $permissionList)
    {
        $context['permissions'][$permissionType] = array(
            'id' => $permissionType,
            'columns' => array()
        );
        foreach ($permissionList as $permission => $permissionArray)
        {
            // If this permission shouldn't be given to certain groups (e.g. guests), don't.
            if (isset($context['group']['id']) && isset($context['permissions_excluded'][$permission]) && in_array($context['group']['id'], $context['permissions_excluded'][$permission]))
                continue;

            // What groups will this permission be in?
            $own_group = $permissionArray[1];

            // First, Do these groups actually exist - if not add them.
            if (!isset($permissionGroups[$permissionType][$own_group]))
                $permissionGroups[$permissionType][$own_group] = true;

            // What column should this be located into?
            $position = !in_array($own_group, $leftPermissionGroups) ? 1 : 0;

            // If the groups have not yet been created be sure to create them.
            $bothGroups = array('own' => $own_group);

            foreach ($bothGroups as $group)
                if (!isset($context['permissions'][$permissionType]['columns'][$position][$group]))
                    $context['permissions'][$permissionType]['columns'][$position][$group] = array(
                        'type' => $permissionType,
                        'id' => $group,
                        'name' => $txt['permissiongroup_' . $group],
                        'icon' => isset($txt['permissionicon_' . $group]) ? $txt['permissionicon_' . $group] : $txt['permissionicon'],
                        'help' => isset($txt['permissionhelp_' . $group]) ? $txt['permissionhelp_' . $group] : '',
                        'hidden' => false,
                        'permissions' => array()
                    );

            $context['permissions'][$permissionType]['columns'][$position][$own_group]['permissions'][$permission] = array(
                'id' => $permission,
                'name' => !isset($relabelPermissions[$permission]) ? $txt['permissionname_' . $permission] : $txt[$relabelPermissions[$permission]],
                'show_help' => isset($txt['permissionhelp_' . $permission]),
                'note' => isset($txt['permissionnote_' . $permission]) ? $txt['permissionnote_' . $permission] : '',
                'has_own_any' => $permissionArray[0],
                'own' => array(
                    'id' => $permission . '_own',
                    'name' => $permissionArray[0] ? $txt['permissionname_' . $permission . '_own'] : ''
                ),
                'any' => array(
                    'id' => $permission . '_any',
                    'name' => $permissionArray[0] ? $txt['permissionname_' . $permission . '_any'] : ''
                ),
                'hidden' => in_array($permission, $hiddenPermissions),
            );

            if (in_array($permission, $hiddenPermissions))
            {
                if ($permissionArray[0])
                {
                    $context['hidden_permissions'][] = $permission . '_own';
                    $context['hidden_permissions'][] = $permission . '_any';
                }
                else
                    $context['hidden_permissions'][] = $permission;
            }
        }
        ksort($context['permissions'][$permissionType]['columns']);

        // Check we don't leave any empty groups - and mark hidden ones as such.
        foreach ($context['permissions'][$permissionType]['columns'] as $column => $groups)
            foreach ($groups as $id => $group)
            {
                if (empty($group['permissions']))
                    unset($context['permissions'][$permissionType]['columns'][$column][$id]);
                else
                {
                    $foundNonHidden = false;
                    foreach ($group['permissions'] as $permission)
                        if (empty($permission['hidden']))
                            $foundNonHidden = true;
                    if (!$foundNonHidden)
                        $context['permissions'][$permissionType]['columns'][$column][$id]['hidden'] = true;
                }
            }
    }
}

/**
 * Initialize a form with inline permissions settings.
 * It loads a context variable for each permission.
 * This function is used by several settings screens to set specific permissions.
 *
 * To exclude groups from the form for a given permission, add the group IDs as
 * an array to $context['excluded_permissions'][$permission]. For backwards
 * compatibility, it is also possible to pass group IDs in via the
 * $excluded_groups parameter, which will exclude the groups from the forms for
 * all of the permissions passed in via $permissions.
 *
 * @internal
 *
 * @param array $permissions The permissions to display inline
 * @param array $excluded_groups The IDs of one or more groups to exclude
 *
 * uses ManagePermissions language
 * uses ManagePermissions template.
 */
function init_inline_permissions($permissions, $excluded_groups = array())
{
    global $context, $txt, $modSettings, $smcFunc;

    loadLanguage('ManagePermissions');
    loadTemplate('ManagePermissions');
    $context['can_change_permissions'] = allowedTo('manage_permissions');

    // Nothing to initialize here.
    if (!$context['can_change_permissions'])
        return;

    // Load the permission settings for guests
    foreach ($permissions as $permission)
        $context[$permission] = array(
            -1 => array(
                'id' => -1,
                'name' => $txt['membergroups_guests'],
                'is_postgroup' => false,
                'status' => 'off',
            ),
            0 => array(
                'id' => 0,
                'name' => $txt['membergroups_members'],
                'is_postgroup' => false,
                'status' => 'off',
            ),
        );

    $request = $smcFunc['db_query']('', '
        SELECT id_group, CASE WHEN add_deny = {int:denied} THEN {string:deny} ELSE {string:on} END AS status, permission
        FROM {db_prefix}permissions
        WHERE id_group IN (-1, 0)
            AND permission IN ({array_string:permissions})',
        array(
            'denied' => 0,
            'permissions' => $permissions,
            'deny' => 'deny',
            'on' => 'on',
        )
    );
    while ($row = $smcFunc['db_fetch_assoc']($request))
        $context[$row['permission']][$row['id_group']]['status'] = $row['status'];
    $smcFunc['db_free_result']($request);

    $request = $smcFunc['db_query']('', '
        SELECT mg.id_group, mg.group_name, mg.min_posts, COALESCE(p.add_deny, -1) AS status, p.permission
        FROM {db_prefix}membergroups AS mg
            LEFT JOIN {db_prefix}permissions AS p ON (p.id_group = mg.id_group AND p.permission IN ({array_string:permissions}))
        WHERE mg.id_group NOT IN (1, 3)
            AND mg.id_parent = {int:not_inherited}' . (empty($modSettings['permission_enable_postgroups']) ? '
            AND mg.min_posts = {int:min_posts}' : '') . '
        ORDER BY mg.min_posts, CASE WHEN mg.id_group < {int:newbie_group} THEN mg.id_group ELSE 4 END, mg.group_name',
        array(
            'not_inherited' => -2,
            'min_posts' => -1,
            'newbie_group' => 4,
            'permissions' => $permissions,
        )
    );
    while ($row = $smcFunc['db_fetch_assoc']($request))
    {
        // Initialize each permission as being 'off' until proven otherwise.
        foreach ($permissions as $permission)
            if (!isset($context[$permission][$row['id_group']]))
                $context[$permission][$row['id_group']] = array(
                    'id' => $row['id_group'],
                    'name' => $row['group_name'],
                    'is_postgroup' => $row['min_posts'] != -1,
                    'status' => 'off',
                );

        $context[$row['permission']][$row['id_group']]['status'] = empty($row['status']) ? 'deny' : ($row['status'] == 1 ? 'on' : 'off');
    }
    $smcFunc['db_free_result']($request);

    // Make sure we honor the "illegal guest permissions"
    loadIllegalGuestPermissions();

    // Only special people can have this permission
    if (in_array('bbc_html', $permissions))
        loadIllegalBBCHtmlGroups();

    // Are any of these permissions that guests can't have?
    $non_guest_perms = array_intersect(str_replace(array('_any', '_own'), '', $permissions), $context['non_guest_permissions']);
    foreach ($non_guest_perms as $permission)
    {
        if (!isset($context['permissions_excluded'][$permission]) || !in_array(-1, $context['permissions_excluded'][$permission]))
            $context['permissions_excluded'][$permission][] = -1;
    }

    // Any explicitly excluded groups for this call?
    if (!empty($excluded_groups))
    {
        // Make sure this is an array of integers
        $excluded_groups = array_filter((array) $excluded_groups, function ($v)
            {
                return is_int($v) || is_string($v) && (string) intval($v) === $v;
            });

        foreach ($permissions as $permission)
            $context['permissions_excluded'][$permission] = array_unique(array_merge($context['permissions_excluded'][$permission], $excluded_groups));
    }

    // Some permissions cannot be given to certain groups. Remove the groups.
    foreach ($permissions as $permission)
    {
        if (!isset($context['permissions_excluded'][$permission]))
            continue;

        foreach ($context['permissions_excluded'][$permission] as $group)
        {
            if (isset($context[$permission][$group]))
                unset($context[$permission][$group]);
        }

        // There's no point showing a form with nobody in it
        if (empty($context[$permission]))
            unset($context['config_vars'][$permission], $context[$permission]);
    }

    // Create the token for the separate inline permission verification.
    createToken('admin-mp');
}

/**
 * Show a collapsible box to set a specific permission.
 * The function is called by templates to show a list of permissions settings.
 * Calls the template function template_inline_permissions().
 *
 * @param string $permission The permission to display inline
 */
function theme_inline_permissions($permission)
{
    global $context;

    $context['current_permission'] = $permission;
    $context['member_groups'] = $context[$permission];

    template_inline_permissions();
}

/**
 * Save the permissions of a form containing inline permissions.
 *
 * @internal
 *
 * @param array $permissions The permissions to save
 */
function save_inline_permissions($permissions)
{
    global $context, $smcFunc;

    // No permissions? Not a great deal to do here.
    if (!allowedTo('manage_permissions'))
        return;

    // Almighty session check, verify our ways.
    checkSession();
    validateToken('admin-mp');

    // Check they can't do certain things.
    loadIllegalPermissions();
    if (in_array('bbc_html', $permissions))
        loadIllegalBBCHtmlGroups();

    $insertRows = array();
    foreach ($permissions as $permission)
    {
        if (!isset($_POST[$permission]))
            continue;

        foreach ($_POST[$permission] as $id_group => $value)
        {
            if ($value == 'on' && !empty($context['excluded_permissions'][$permission]) && in_array($id_group, $context['excluded_permissions'][$permission]))
                continue;

            if (in_array($value, array('on', 'deny')) && (empty($context['illegal_permissions']) || !in_array($permission, $context['illegal_permissions'])))
                $insertRows[] = array((int) $id_group, $permission, $value == 'on' ? 1 : 0);
        }
    }

    // Remove the old permissions...
    $smcFunc['db_query']('', '
        DELETE FROM {db_prefix}permissions
        WHERE permission IN ({array_string:permissions})
            ' . (empty($context['illegal_permissions']) ? '' : ' AND permission NOT IN ({array_string:illegal_permissions})'),
        array(
            'illegal_permissions' => !empty($context['illegal_permissions']) ? $context['illegal_permissions'] : array(),
            'permissions' => $permissions,
        )
    );

    // ...and replace them with new ones.
    if (!empty($insertRows))
        $smcFunc['db_insert']('insert',
            '{db_prefix}permissions',
            array('id_group' => 'int', 'permission' => 'string', 'add_deny' => 'int'),
            $insertRows,
            array('id_group', 'permission')
        );

    // Do a full child update.
    updateChildPermissions(array(), -1);

    // Just in case we cached this.
    updateSettings(array('settings_updated' => time()));
}

/**
 * Load permissions profiles.
 */
function loadPermissionProfiles()
{
    global $context, $txt, $smcFunc;

    $request = $smcFunc['db_query']('', '
        SELECT id_profile, profile_name
        FROM {db_prefix}permission_profiles
        ORDER BY id_profile',
        array(
        )
    );
    $context['profiles'] = array();
    while ($row = $smcFunc['db_fetch_assoc']($request))
    {
        // Format the label nicely.
        if (isset($txt['permissions_profile_' . $row['profile_name']]))
            $name = $txt['permissions_profile_' . $row['profile_name']];
        else
            $name = $row['profile_name'];

        $context['profiles'][$row['id_profile']] = array(
            'id' => $row['id_profile'],
            'name' => $name,
            'can_modify' => $row['id_profile'] == 1 || $row['id_profile'] > 4,
            'unformatted_name' => $row['profile_name'],
        );
    }
    $smcFunc['db_free_result']($request);
}

/**
 * Add/Edit/Delete profiles.
 */
function EditPermissionProfiles()
{
    global $context, $txt, $smcFunc;

    // Setup the template, first for fun.
    $context['page_title'] = $txt['permissions_profile_edit'];
    $context['sub_template'] = 'edit_profiles';

    // If we're creating a new one do it first.
    if (isset($_POST['create']) && trim($_POST['profile_name']) != '')
    {
        checkSession();
        validateToken('admin-mpp');

        $_POST['copy_from'] = (int) $_POST['copy_from'];
        $_POST['profile_name'] = $smcFunc['htmlspecialchars']($_POST['profile_name']);

        // Insert the profile itself.
        $profile_id = $smcFunc['db_insert']('',
            '{db_prefix}permission_profiles',
            array(
                'profile_name' => 'string',
            ),
            array(
                $_POST['profile_name'],
            ),
            array('id_profile'),
            1
        );

        // Load the permissions from the one it's being copied from.
        $request = $smcFunc['db_query']('', '
            SELECT id_group, permission, add_deny
            FROM {db_prefix}board_permissions
            WHERE id_profile = {int:copy_from}',
            array(
                'copy_from' => $_POST['copy_from'],
            )
        );
        $inserts = array();
        while ($row = $smcFunc['db_fetch_assoc']($request))
            $inserts[] = array($profile_id, $row['id_group'], $row['permission'], $row['add_deny']);
        $smcFunc['db_free_result']($request);

        if (!empty($inserts))
            $smcFunc['db_insert']('insert',
                '{db_prefix}board_permissions',
                array('id_profile' => 'int', 'id_group' => 'int', 'permission' => 'string', 'add_deny' => 'int'),
                $inserts,
                array('id_profile', 'id_group', 'permission')
            );
    }
    // Renaming?
    elseif (isset($_POST['rename']))
    {
        checkSession();
        validateToken('admin-mpp');

        // Just showing the boxes?
        if (!isset($_POST['rename_profile']))
            $context['show_rename_boxes'] = true;
        else
        {
            foreach ($_POST['rename_profile'] as $id => $value)
            {
                $value = $smcFunc['htmlspecialchars']($value);

                if (trim($value) != '' && $id > 4)
                    $smcFunc['db_query']('', '
                        UPDATE {db_prefix}permission_profiles
                        SET profile_name = {string:profile_name}
                        WHERE id_profile = {int:current_profile}',
                        array(
                            'current_profile' => (int) $id,
                            'profile_name' => $value,
                        )
                    );
            }
        }
    }
    // Deleting?
    elseif (isset($_POST['delete']) && !empty($_POST['delete_profile']))
    {
        checkSession();
        validateToken('admin-mpp');

        $profiles = array();
        foreach ($_POST['delete_profile'] as $profile)
            if ($profile > 4)
                $profiles[] = (int) $profile;

        // Verify it's not in use...
        $request = $smcFunc['db_query']('', '
            SELECT id_board
            FROM {db_prefix}boards
            WHERE id_profile IN ({array_int:profile_list})
            LIMIT 1',
            array(
                'profile_list' => $profiles,
            )
        );
        if ($smcFunc['db_num_rows']($request) != 0)
            fatal_lang_error('no_access', false);
        $smcFunc['db_free_result']($request);

        // Oh well, delete.
        $smcFunc['db_query']('', '
            DELETE FROM {db_prefix}permission_profiles
            WHERE id_profile IN ({array_int:profile_list})',
            array(
                'profile_list' => $profiles,
            )
        );
    }

    // Clearly, we'll need this!
    loadPermissionProfiles();

    // Work out what ones are in use.
    $request = $smcFunc['db_query']('', '
        SELECT id_profile, COUNT(id_board) AS board_count
        FROM {db_prefix}boards
        GROUP BY id_profile',
        array(
        )
    );
    while ($row = $smcFunc['db_fetch_assoc']($request))
        if (isset($context['profiles'][$row['id_profile']]))
        {
            $context['profiles'][$row['id_profile']]['in_use'] = true;
            $context['profiles'][$row['id_profile']]['boards'] = $row['board_count'];
            $context['profiles'][$row['id_profile']]['boards_text'] = $row['board_count'] > 1 ? sprintf($txt['permissions_profile_used_by_many'], $row['board_count']) : $txt['permissions_profile_used_by_' . ($row['board_count'] ? 'one' : 'none')];
        }
    $smcFunc['db_free_result']($request);

    // What can we do with these?
    $context['can_edit_something'] = false;
    foreach ($context['profiles'] as $id => $profile)
    {
        // Can't delete special ones.
        $context['profiles'][$id]['can_edit'] = isset($txt['permissions_profile_' . $profile['unformatted_name']]) ? false : true;
        if ($context['profiles'][$id]['can_edit'])
            $context['can_edit_something'] = true;

        // You can only delete it if you can edit it AND it's not in use.
        $context['profiles'][$id]['can_delete'] = $context['profiles'][$id]['can_edit'] && empty($profile['in_use']) ? true : false;
    }

    createToken('admin-mpp');
}

/**
 * This function updates the permissions of any groups based off this group.
 *
 * @param null|array $parents The parent groups
 * @param null|int $profile the ID of a permissions profile to update
 * @return void|false Returns nothing if successful or false if there are no child groups to update
 */
function updateChildPermissions($parents, $profile = null)
{
    global $smcFunc;

    // All the parent groups to sort out.
    if (!is_array($parents))
        $parents = array($parents);

    // Find all the children of this group.
    $request = $smcFunc['db_query']('', '
        SELECT id_parent, id_group
        FROM {db_prefix}membergroups
        WHERE id_parent != {int:not_inherited}
            ' . (empty($parents) ? '' : 'AND id_parent IN ({array_int:parent_list})'),
        array(
            'parent_list' => $parents,
            'not_inherited' => -2,
        )
    );
    $children = array();
    $parents = array();
    $child_groups = array();
    while ($row = $smcFunc['db_fetch_assoc']($request))
    {
        $children[$row['id_parent']][] = $row['id_group'];
        $child_groups[] = $row['id_group'];
        $parents[] = $row['id_parent'];
    }
    $smcFunc['db_free_result']($request);

    $parents = array_unique($parents);

    // Not a sausage, or a child?
    if (empty($children))
        return false;

    // First off, are we doing general permissions?
    if ($profile < 1 || $profile === null)
    {
        // Fetch all the parent permissions.
        $request = $smcFunc['db_query']('', '
            SELECT id_group, permission, add_deny
            FROM {db_prefix}permissions
            WHERE id_group IN ({array_int:parent_list})',
            array(
                'parent_list' => $parents,
            )
        );
        $permissions = array();
        while ($row = $smcFunc['db_fetch_assoc']($request))
            foreach ($children[$row['id_group']] as $child)
                $permissions[] = array($child, $row['permission'], $row['add_deny']);
        $smcFunc['db_free_result']($request);

        $smcFunc['db_query']('', '
            DELETE FROM {db_prefix}permissions
            WHERE id_group IN ({array_int:child_groups})',
            array(
                'child_groups' => $child_groups,
            )
        );

        // Finally insert.
        if (!empty($permissions))
        {
            $smcFunc['db_insert']('insert',
                '{db_prefix}permissions',
                array('id_group' => 'int', 'permission' => 'string', 'add_deny' => 'int'),
                $permissions,
                array('id_group', 'permission')
            );
        }
    }

    // Then, what about board profiles?
    if ($profile != -1)
    {
        $profileQuery = $profile === null ? '' : ' AND id_profile = {int:current_profile}';

        // Again, get all the parent permissions.
        $request = $smcFunc['db_query']('', '
            SELECT id_profile, id_group, permission, add_deny
            FROM {db_prefix}board_permissions
            WHERE id_group IN ({array_int:parent_groups})
                ' . $profileQuery,
            array(
                'parent_groups' => $parents,
                'current_profile' => $profile !== null && $profile ? $profile : 1,
            )
        );
        $permissions = array();
        while ($row = $smcFunc['db_fetch_assoc']($request))
            foreach ($children[$row['id_group']] as $child)
                $permissions[] = array($child, $row['id_profile'], $row['permission'], $row['add_deny']);
        $smcFunc['db_free_result']($request);

        $smcFunc['db_query']('', '
            DELETE FROM {db_prefix}board_permissions
            WHERE id_group IN ({array_int:child_groups})
                ' . $profileQuery,
            array(
                'child_groups' => $child_groups,
                'current_profile' => $profile !== null && $profile ? $profile : 1,
            )
        );

        // Do the insert.
        if (!empty($permissions))
        {
            $smcFunc['db_insert']('insert',
                '{db_prefix}board_permissions',
                array('id_group' => 'int', 'id_profile' => 'int', 'permission' => 'string', 'add_deny' => 'int'),
                $permissions,
                array('id_group', 'id_profile', 'permission')
            );
        }
    }
}

/**
 * Load permissions someone cannot grant.
 */
function loadIllegalPermissions()
{
    global $context;

    $context['illegal_permissions'] = array();
    if (!allowedTo('admin_forum'))
    {
        $context['illegal_permissions'][] = 'admin_forum';
        $context['illegal_permissions'][] = 'bbc_html';
    }
    if (!allowedTo('manage_membergroups'))
        $context['illegal_permissions'][] = 'manage_membergroups';
    if (!allowedTo('manage_permissions'))
        $context['illegal_permissions'][] = 'manage_permissions';

    call_integration_hook('integrate_load_illegal_permissions');
}

/**
 * Loads the permissions that can not be given to guests.
 * Stores the permissions in $context['non_guest_permissions'].
 * Also populates $context['permissions_excluded'] with the info.
 */
function loadIllegalGuestPermissions()
{
    global $context;

    $context['non_guest_permissions'] = array(
        'access_mod_center',
        'admin_forum',
        'announce_topic',
        'approve_posts',
        'bbc_html',
        'calendar_edit',
        'delete',
        'delete_replies',
        'edit_news',
        'issue_warning',
        'likes_like',
        'lock',
        'make_sticky',
        'manage_attachments',
        'manage_bans',
        'manage_boards',
        'manage_membergroups',
        'manage_permissions',
        'manage_smileys',
        'merge_any',
        'moderate_board',
        'moderate_forum',
        'modify',
        'modify_replies',
        'move',
        'pm_autosave_draft',
        'pm_draft',
        'pm_read',
        'pm_send',
        'poll_add',
        'poll_edit',
        'poll_lock',
        'poll_remove',
        'post_autosave_draft',
        'post_draft',
        'profile_blurb',
        'profile_displayed_name',
        'profile_extra',
        'profile_forum',
        'profile_identity',
        'profile_website',
        'profile_password',
        'profile_remove',
        'profile_remote_avatar',
        'profile_server_avatar',
        'profile_signature',
        'profile_title',
        'profile_upload_avatar',
        'profile_warning',
        'remove',
        'report_any',
        'report_user',
        'send_mail',
        'split_any',
    );

    call_integration_hook('integrate_load_illegal_guest_permissions');

    // Also add this info to $context['permissions_excluded'] to make life easier for everyone
    foreach ($context['non_guest_permissions'] as $permission)
    {
        if (empty($context['permissions_excluded'][$permission]) || !in_array($permission, $context['permissions_excluded'][$permission]))
            $context['permissions_excluded'][$permission][] = -1;
    }
}

/**
 * Loads a list of membergroups who cannot be granted the bbc_html permission.
 * Stores the groups in $context['permissions_excluded']['bbc_html'].
 */
function loadIllegalBBCHtmlGroups()
{
    global $context, $smcFunc;

    $context['permissions_excluded']['bbc_html'] = array(-1, 0);

    $request = $smcFunc['db_query']('', '
        SELECT id_group
        FROM {db_prefix}membergroups
        WHERE id_group != 1 AND id_group NOT IN (
            SELECT DISTINCT id_group
            FROM {db_prefix}permissions
            WHERE permission IN ({array_string:permissions})
                AND add_deny = {int:add}
        )',
        array(
            'permissions' => array('admin_forum', 'manage_membergroups', 'manage_permissions'),
            'add' => 1,
        )
    );
    while ($row = $smcFunc['db_fetch_assoc']($request))
        $context['permissions_excluded']['bbc_html'][] = $row['id_group'];
    $smcFunc['db_free_result']($request);

    $context['permissions_excluded']['bbc_html'] = array_unique($context['permissions_excluded']['bbc_html']);
}

/**
 * Removes the bbc_html permission from anyone who shouldn't have it
 *
 * @param bool $reload Before acting, refresh the list of membergroups who cannot be granted the bbc_html permission
 */
function removeIllegalBBCHtmlPermission($reload = false)
{
    global $context, $smcFunc;

    if (empty($context['permissions_excluded']['bbc_html']) || $reload)
        loadIllegalBBCHtmlGroups();

    $smcFunc['db_query']('', '
        DELETE FROM {db_prefix}permissions
        WHERE id_group IN ({array_int:current_group_list})
            AND permission = {string:current_permission}
            AND add_deny = {int:add}',
        array(
            'current_group_list' => $context['permissions_excluded']['bbc_html'],
            'current_permission' => 'bbc_html',
            'add' => 1,
        )
    );
}

/**
 * Present a nice way of applying post moderation.
 */
function ModifyPostModeration()
{
    global $context, $txt, $smcFunc, $modSettings, $sourcedir;

    // Just in case.
    checkSession('get');

    $context['page_title'] = $txt['permissions_post_moderation'];
    $context['sub_template'] = 'postmod_permissions';
    $context['current_profile'] = isset($_REQUEST['pid']) ? (int) $_REQUEST['pid'] : 1;

    // Load all the permission profiles.
    loadPermissionProfiles();

    // Mappings, our key => array(can_do_moderated, can_do_all)
    $mappings = array(
        'new_topic' => array('post_new', 'post_unapproved_topics'),
        'replies_own' => array('post_reply_own', 'post_unapproved_replies_own'),
        'replies_any' => array('post_reply_any', 'post_unapproved_replies_any'),
        'attachment' => array('post_attachment', 'post_unapproved_attachments'),
    );

    call_integration_hook('integrate_post_moderation_mapping', array(&$mappings));

    // Start this with the guests/members.
    $context['profile_groups'] = array(
        -1 => array(
            'id' => -1,
            'name' => $txt['membergroups_guests'],
            'color' => '',
            'new_topic' => 'disallow',
            'replies_own' => 'disallow',
            'replies_any' => 'disallow',
            'attachment' => 'disallow',
            'children' => array(),
        ),
        0 => array(
            'id' => 0,
            'name' => $txt['membergroups_members'],
            'color' => '',
            'new_topic' => 'disallow',
            'replies_own' => 'disallow',
            'replies_any' => 'disallow',
            'attachment' => 'disallow',
            'children' => array(),
        ),
    );

    // Load the groups.
    $request = $smcFunc['db_query']('', '
        SELECT id_group, group_name, online_color, id_parent
        FROM {db_prefix}membergroups
        WHERE id_group != {int:admin_group}
            ' . (empty($modSettings['permission_enable_postgroups']) ? ' AND min_posts = {int:min_posts}' : '') . '
        ORDER BY id_parent ASC',
        array(
            'admin_group' => 1,
            'min_posts' => -1,
        )
    );
    while ($row = $smcFunc['db_fetch_assoc']($request))
    {
        if ($row['id_parent'] == -2)
        {
            $context['profile_groups'][$row['id_group']] = array(
                'id' => $row['id_group'],
                'name' => $row['group_name'],
                'color' => $row['online_color'],
                'new_topic' => 'disallow',
                'replies_own' => 'disallow',
                'replies_any' => 'disallow',
                'attachment' => 'disallow',
                'children' => array(),
            );
        }
        elseif (isset($context['profile_groups'][$row['id_parent']]))
            $context['profile_groups'][$row['id_parent']]['children'][] = $row['group_name'];
    }
    $smcFunc['db_free_result']($request);

    // What are the permissions we are querying?
    $all_permissions = array();
    foreach ($mappings as $perm_set)
        $all_permissions = array_merge($all_permissions, $perm_set);

    // If we're saving the changes then do just that - save them.
    if (!empty($_POST['save_changes']) && ($context['current_profile'] == 1 || $context['current_profile'] > 4))
    {
        validateToken('admin-mppm');

        // First, are we saving a new value for enabled post moderation?
        $new_setting = !empty($_POST['postmod_active']);
        if ($new_setting != $modSettings['postmod_active'])
        {
            if ($new_setting)
            {
                // Turning it on. This seems easy enough.
                updateSettings(array('postmod_active' => 1));
            }
            else
            {
                // Turning it off. Not so straightforward. We have to turn off warnings to moderation level, and make everything approved.
                updateSettings(array(
                    'postmod_active' => 0,
                    'warning_moderate' => 0,
                ));

                require_once($sourcedir . '/PostModeration.php');
                approveAllData();
            }
        }
        elseif ($modSettings['postmod_active'])
        {
            // We're not saving a new setting - and if it's still enabled we have more work to do.

            // Start by deleting all the permissions relevant.
            $smcFunc['db_query']('', '
                DELETE FROM {db_prefix}board_permissions
                WHERE id_profile = {int:current_profile}
                    AND permission IN ({array_string:permissions})
                    AND id_group IN ({array_int:profile_group_list})',
                array(
                    'profile_group_list' => array_keys($context['profile_groups']),
                    'current_profile' => $context['current_profile'],
                    'permissions' => $all_permissions,
                )
            );

            // Do it group by group.
            $new_permissions = array();
            foreach ($context['profile_groups'] as $id => $group)
            {
                foreach ($mappings as $index => $data)
                {
                    if (isset($_POST[$index][$group['id']]))
                    {
                        if ($_POST[$index][$group['id']] == 'allow')
                        {
                            // Give them both sets for fun.
                            $new_permissions[] = array($context['current_profile'], $group['id'], $data[0], 1);
                            $new_permissions[] = array($context['current_profile'], $group['id'], $data[1], 1);
                        }
                        elseif ($_POST[$index][$group['id']] == 'moderate')
                            $new_permissions[] = array($context['current_profile'], $group['id'], $data[1], 1);
                    }
                }
            }

            // Insert new permissions.
            if (!empty($new_permissions))
                $smcFunc['db_insert']('',
                    '{db_prefix}board_permissions',
                    array('id_profile' => 'int', 'id_group' => 'int', 'permission' => 'string', 'add_deny' => 'int'),
                    $new_permissions,
                    array('id_profile', 'id_group', 'permission')
                );
        }
    }

    // Now get all the permissions!
    $request = $smcFunc['db_query']('', '
        SELECT id_group, permission, add_deny
        FROM {db_prefix}board_permissions
        WHERE id_profile = {int:current_profile}
            AND permission IN ({array_string:permissions})
            AND id_group IN ({array_int:profile_group_list})',
        array(
            'profile_group_list' => array_keys($context['profile_groups']),
            'current_profile' => $context['current_profile'],
            'permissions' => $all_permissions,
        )
    );
    while ($row = $smcFunc['db_fetch_assoc']($request))
    {
        foreach ($mappings as $key => $data)
        {
            foreach ($data as $index => $perm)
            {
                if ($perm == $row['permission'])
                {
                    // Only bother if it's not denied.
                    if ($row['add_deny'])
                    {
                        // Full allowance?
                        if ($index == 0)
                            $context['profile_groups'][$row['id_group']][$key] = 'allow';
                        // Otherwise only bother with moderate if not on allow.
                        elseif ($context['profile_groups'][$row['id_group']][$key] != 'allow')
                            $context['profile_groups'][$row['id_group']][$key] = 'moderate';
                    }
                }
            }
        }
    }
    $smcFunc['db_free_result']($request);

    createToken('admin-mppm');
}

?>