<?php
/*
 * Copyright 2005-2016 OCSInventory-NG/OCSInventory-ocsreports contributors.
 * See the Contributors file for more details about them.
 *
 * This file is part of OCSInventory-NG/OCSInventory-ocsreports.
 *
 * OCSInventory-NG/OCSInventory-ocsreports 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, either version 2 of the License,
 * or (at your option) any later version.
 *
 * OCSInventory-NG/OCSInventory-ocsreports 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with OCSInventory-NG/OCSInventory-ocsreports. if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 */

/**
 * This function extracts the archive content and
 * puts it in the ocs reports for initialization.
 */
function install($archiveName) {
    if (file_exists(PLUGINS_DL_DIR . $archiveName)) {
        $archive = new ZipArchive();
        $archive->open(PLUGINS_DL_DIR . $archiveName);
        $arrayplugin = explode(".", $archiveName);
        $plugindir = $arrayplugin[0];
        if (!file_exists(MAIN_SECTIONS_DIR . "ms_" . $plugindir)) {
            $archive->extractTo(MAIN_SECTIONS_DIR . "ms_" . $plugindir);
            $archive->close();
            return true;
        } else {
            return false;
        }
    }
}

/**
 * This function checks if the plugin is already in the DATABASE and installed.
 * If not an entry is created in the table "plugins" with the plugins infos.
 */
function check($plugarray) {

    $conn = new PDO('mysql:host=' . SERVER_WRITE . ';dbname=' . DB_NAME . ';charset=utf8', COMPTE_BASE, PSWD_BASE);

    foreach ($plugarray as $value) {

        $query = $conn->query("SELECT EXISTS( SELECT * FROM `plugins` WHERE name = '" . $value . "' ) AS name_exists");
        $anwser = $query->fetch();

        // If the plugin isn't in the database ... add it
        if ($anwser[0] == false) {
            if (file_exists(MAIN_SECTIONS_DIR . "ms_" . $value . "/install.php")) {
                require MAIN_SECTIONS_DIR . "ms_" . $value . "/install.php";

                if (!function_exists("plugin_version_" . $value) || !function_exists("plugin_init_" . $value) || !function_exists("plugin_delete_" . $value)) {

                    rrmdir(MAIN_SECTIONS_DIR . "ms_" . $value);
                    return false;
                }

                // Retrieve infos from the plugin_version_plugname functions and add it to the database

                $fonc = "plugin_version_" . $value;
                $infoplugin = $fonc();

                $conn->query("INSERT INTO `" . DB_NAME . "`.`plugins` (`id`, `name`, `version`, `licence`, `author`, `verminocs`, `activated`, `reg_date`)
					VALUES (NULL, '" . $infoplugin['name'] . "', '" . $infoplugin['version'] . "', '" . $infoplugin['license'] . "', '" . $infoplugin['author'] . "', '" . $infoplugin['verMinOcs'] . "', '1', CURRENT_TIMESTAMP);");

                // Initialize the plugins requirement (New menus, Set permissions etc etc)
                $init = "plugin_init_" . $value;
                $infoplugin = $init();

                return true;
            } else {
                rrmdir(MAIN_SECTIONS_DIR . "ms_" . $value);

                return false;
            }
        }
    }
}

/**
 * Scan the DL plugins dir.
 * If the plugin isn't installed in the ocsreports, this function call the "install" function
 */
function scan_downloaded_plugins() {
    if (!file_exists(PLUGINS_DL_DIR)) {
        mkdir(PLUGINS_DL_DIR, '0775', true);
    }

    // Scan plugins download directory
    $directory = PLUGINS_DL_DIR;
    $scanned_directory = array_diff(scandir($directory), array('..', '.', 'README'));

    return $scanned_directory;
}

/**
 * This function checks and returns all plugins installed in the OCS Reports...
 *
 * @return ArrayObject
 */
function scan_for_plugins() {
    $scanned_plugins = array_diff(scandir(MAIN_SECTIONS_DIR), array('img', 'ms_all_soft', 'ms_debug', 'ms_groups', 'ms_multi_search', 'ms_stats', 'ms_computer', 'ms_dict', 'ms_help', 'ms_plugins', 'ms_search_soft', 'ms_teledeploy', 'ms_admininfo', 'ms_config', 'ms_doubles', 'ms_ipdiscover', 'ms_regconfig', 'ms_server_infos', 'ms_upload_file', 'ms_all_computers', 'ms_console', 'ms_export', 'ms_logs', 'ms_repart_tag', 'ms_snmp', 'ms_users', '.', '..'));

    $plugins_name = array();

    foreach ($scanned_plugins as $value) {
        $exp = explode("_", $value);
        $plugins_name[] = $exp[1];
    }

    return $plugins_name;
}

/**
 * This function checks if a cd_pluginame dir exists.
 * In that case the cd_pluginame dir is moved into computer_detail directory
 */
function mv_computer_detail($name) {
    if (file_exists($old = MAIN_SECTIONS_DIR . "ms_" . $name . "/cd_" . $name)) {
        $new = PLUGINS_DIR . "/computer_detail/cd_" . $name;
        rename($old, $new);
    }
}

/**
 * This function creates a plugin archive for the server side part of a plugin which contains the map.pm
 * This part will be downloaded and installed by the communication server.
 */
function mv_server_side($name) {
    $dir = MAIN_SECTIONS_DIR . "ms_" . $name . "/APACHE/";

    if (file_exists($dir)) {

        $archive = new ZipArchive();
        $archive->open(PLUGINS_SRV_SIDE . $name . ".zip", ZipArchive::CREATE);

        $scanned_directory = array_diff(scandir($dir), array('..', '.', 'README'));

        foreach ($scanned_directory as $value) {
            $archive->addFile($dir . $value, $value);
        }

        $archive->close();
        rrmdir($dir);

        return true;
    } else {
        return false;
    }
}

/**
 * This function checks for required php dependencies.
 * Can't install plugin if not installed
 */
function checkDependencies() {
    global $l;

    $missing_module = false;
    $str_msg = "";

    $modules_to_check = array(
        "ZipArchive",
        "SOAPClient"
    );

    foreach ($modules_to_check as $value) {
        if (!class_exists($value)) {
            $missing_module = true;
            $str_msg .= " - " . $value . "<br>";
        }
    }

    if ($missing_module == true) {
        msg_error($l->g(6007) . "<br>" . $str_msg);
        return false;
    } else {
        return true;
    }
}

/**
 * This function checks if directories are writable.
 * Can't install plugin if not writable
 */
function checkWritable() {
    global $l;

    $missing_permissions = false;
    $str_msg = "";

    $sup_writable_dir = array(
        CD_CONFIG_DIR,
        CONFIG_DIR,
        PLUGINS_DIR . "language",
        MAIN_SECTIONS_DIR,
        PLUGINS_SRV_SIDE
    );

    foreach ($sup_writable_dir as $value) {
        if (!is_writable($value)) {
            $missing_permissions = true;
            $str_msg .= " - " . $value . "<br>";
        }
    }

    if ($missing_permissions == true) {
        msg_error($l->g(6008) . "<br>" . $str_msg);
        return false;
    } else {
        return true;
    }
}