<?php

// Pandora FMS - http://pandorafms.com
// ==================================================
// Copyright (c) 2005-2009 Artica Soluciones Tecnologicas
// Please see http://pandorafms.org for full contribution list
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation for version 2.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
global $config;

require_once $config['homedir'].'/include/functions_modules.php';
require_once $config['homedir'].'/include/functions_tags.php';


/**
 * Compose and return a WMI query
 *
 * @param string WMI client i.e. wmic
 * @param string Administrator user of the system
 * @param string Administrator password
 * @param string host IP or host of the system
 * @param string parameter --namespace of the WMI query (if not provided, will be ignored)
 *
 * @return string WMI query
 */
function wmi_compose_query($wmi_client, $user, $password, $host, $namespace='')
{
    $wmi_command = '';

    if (!empty($password)) {
        $wmi_command = $wmi_client.' -U "'.$user.'"%"'.$password.'"';
    } else {
        $wmi_command = $wmi_client.' -U "'.$user.'"';
    }

    if (!empty($namespace)) {
        $namespace = str_replace('&quot;', "'", $namespace);
        $wmi_command .= ' --namespace="'.$namespace.'"';
    }

    $wmi_command .= ' //'.$host;

    return $wmi_command;
}


function wmi_create_wizard_modules($id_agent, $names, $wizard_mode, $values, $id_police=0, $module_id=0, $server_to_exec=0)
{
    $results = [
        ERR_GENERIC => [],
        NOERR       => [],
    ];

    if (empty($names)) {
        return [];
    }

    foreach ($names as $name) {
        // Add query to wmi_command
        switch ($wizard_mode) {
            case 'services':
                $wmi_query = 'SELECT state FROM Win32_Service WHERE Name="'.io_safe_output($name).'"';
            break;

            case 'processes':
                $wmi_query = 'SELECT Name FROM Win32_Process WHERE Name="'.io_safe_output($name).'"';
            break;

            case 'disks':
                $wmi_query = 'SELECT Freespace FROM Win32_LogicalDisk WHERE DeviceID ="'.io_safe_output($name).'"';
            break;
        }

        // Add the query to values
        $values['snmp_oid'] = io_safe_input($wmi_query);

        if ($id_police != 0) {
            $new_module_configuration_data = "module_begin\nmodule_name ".$name."\nmodule_type generic_data_string\nmodule_wmi ".$values['ip_target']."\nmodule_wmiquery ".$wmi_query."\nmodule_wmiauth ".$values['plugin_user'].'%'.$values['plugin_pass']."\nmodule_end";
            $values['configuration_data'] = $new_module_configuration_data;

            $return = policies_create_module($name, $id_police, $module_id, $values);
        } else {
            $return = modules_create_agent_module($id_agent, $name, $values);
        }

        if ($return < 0) {
            $results[ERR_GENERIC][] = $name;
        } else {
            if ($id_police == 0) {
                if ($server_to_exec != 0) {
                    $sql = sprintf('SELECT server_type FROM tserver WHERE id_server = %d', $server_to_exec);
                    $row = db_get_row_sql($sql);

                    if ($row['server_type'] == 13) {
                        $new_module_configuration_data = "module_begin\nmodule_name ".$name."\nmodule_type generic_data_string\nmodule_wmi ".$values['ip_target']."\nmodule_wmiquery ".$wmi_query."\nmodule_wmiauth ".$values['plugin_user'].'%'.$values['plugin_pass']."\nmodule_end";

                        config_agents_add_module_in_conf($id_agent, $new_module_configuration_data);
                    }
                }
            }

            $results[NOERR][] = $name;
        }
    }

    return $results;
}


function wmi_create_module_from_components($components, $values, $id_police=0, $module_id=0, $server_to_exec=0)
{
    $results = [
        ERR_GENERIC => [],
        NOERR       => [],
        ERR_EXIST   => [],
    ];

    if (empty($components)) {
        return [];
    }

    foreach ($components as $component_id) {
        $nc = db_get_row('tnetwork_component', 'id_nc', $component_id);

        // Compatibilize the fields between components and modules table
        if ($id_police == 0) {
            $nc['descripcion'] = $nc['description'];
            unset($nc['description']);

            $nc['nombre'] = $nc['name'];
            unset($nc['name']);
        }

        $nc['id_tipo_modulo'] = $nc['type'];
        unset($nc['type']);

        unset($nc['id_nc']);
        unset($nc['id_group']);
        if ($id_police != 0) {
            unset($nc['id_modulo']);
            unset($nc['wizard_level']);
        }

        // Store the passed values with the component values
        foreach ($values as $k => $v) {
            $nc[$k] = $v;
        }

        // Put tags in array if the component has to add them later
        if (!empty($nc['tags'])) {
            $tags = explode(',', $nc['tags']);
        } else {
            $tags = [];
        }

        unset($nc['tags']);

        // Check if this module exists in the agent
        if ($nc['id_agente'] != '') {
            $module_name_check = db_get_value_filter('id_agente_modulo', 'tagente_modulo', ['delete_pending' => 0, 'nombre' => $nc['nombre'], 'id_agente' => $nc['id_agente']]);
        } else {
            $module_name_check = false;
        }

        if ($module_name_check !== false) {
            $results[ERR_EXIST][] = $nc['nombre'];
        } else {
            if ($id_police == 0) {
                $id_agente_modulo = modules_create_agent_module($nc['id_agente'], $nc['nombre'], $nc);
            } else {
                $new_module_configuration_data = "module_begin\nmodule_name ".$nc['nombre']."\nmodule_type generic_data_string\nmodule_wmi ".$values['ip_target']."\nmodule_wmiquery ".io_safe_output($nc['snmp_oid'])."\nmodule_wmiauth ".$values['plugin_user'].'%'.$values['plugin_pass']."\nmodule_end";
                $nc['configuration_data'] = $new_module_configuration_data;

                $id_agente_modulo = policies_create_module($nc['name'], $id_police, $module_id, $nc);
            }

            if ($id_agente_modulo === false) {
                $results[ERR_GENERIC][] = $nc['nombre'];
            } else {
                if ($id_police == 0) {
                    if ($server_to_exec != 0) {
                        $sql = sprintf('SELECT server_type FROM tserver WHERE id_server = %d', $server_to_exec);
                        $row = db_get_row_sql($sql);

                        if ($row['server_type'] == 13) {
                            $new_module_configuration_data = "module_begin\nmodule_name ".$nc['nombre']."\nmodule_type generic_data_string\nmodule_wmi ".$values['ip_target']."\nmodule_wmiquery ".$nc['snmp_oid']."\nmodule_wmiauth ".$values['plugin_user'].'%'.$values['plugin_pass']."\nmodule_end";

                            config_agents_add_module_in_conf($nc['id_agente'], $new_module_configuration_data);
                        }
                    }
                }

                if (!empty($tags)) {
                    // Creating tags
                    $tag_ids = [];
                    foreach ($tags as $tag_name) {
                        $tag_id = tags_get_id($tag_name);

                        // If tag exists in the system we store to create it
                        $tag_ids[] = $tag_id;
                    }

                    tags_insert_module_tag($id_agente_modulo, $tag_ids);
                }

                $results[NOERR][] = $nc['nombre'];
            }
        }
    }

    return $results;
}