iobroker.backitup/lib/scripts/01-mount.js

Backitup enables the cyclic creation of backups of an IoBroker / Homematic installation

'use strict';
const child_process = require('child_process');
const fs = require('fs');
const wol = require('node-wol');

function command(options, log, callback) {

    let waitTime = 10000;

    if (options.wakeOnLAN === 'true' || options.wakeOnLAN === true) {
        wol.wake(options.macAd, function(error) {
            if(error) {
                log.error(error);
                return callback('NO Wake on LAN specified!');
            } else {
                log.debug('Wake on LAN MAC-Address: ' + options.macAd);
            }
        });
        waitTime = options.wolTime * 1000;

        log.debug('Wake on LAN wait ' + options.wolTime + ' Seconds for NAS!');
    }

    let rootMount = 'mount';
    if (options.sudo === 'true' || options.sudo === true) {
        rootMount = 'sudo mount';
    }
    let rootUmount = 'umount';
    if (options.sudo === 'true' || options.sudo === true) {
        rootUmount = 'sudo umount';
    }
    if (options.mountType === 'CIFS' && options.mount && !options.mount.startsWith('//')) {
        options.mount = '//' + options.mount;
    }
    if (options.mountType === 'CIFS' && options.mount && !options.dir.startsWith('/') || options.mountType === 'NFS' && options.mount && !options.dir.startsWith('/')) {
        options.dir = '/' + options.dir;
    }

    if (!options.mount) {
        return callback('NO mount path specified!');
    }
    if (options.mountType === 'CIFS' || options.mountType === 'NFS') {
		if (fs.existsSync(options.fileDir + '/.mount')) {
            child_process.exec(`mount | grep -o "${options.backupDir}"`, (error, stdout, stderr) => {
                if(stdout.indexOf(options.backupDir) != -1) {
                    log.debug('mount activ... umount is started before mount!!');
                    child_process.exec(`${rootUmount} ${options.backupDir}`, (error, stdout, stderr) => {
                        if (error) {
                            log.debug('device is busy... wait 2 Minutes!!');
								setTimeout(function() {
									child_process.exec(`${rootUmount} ${options.backupDir}`, (error, stdout, stderr) => {
										if (error) {
											options.context.errors.umount = error;
											log.error(stderr);
										} else {
											options.context.done.push('umount');
											fs.existsSync(options.fileDir + '/.mount') && fs.unlinkSync(options.fileDir + '/.mount');
										}
									});
								}, 120000);
                        } else {
                            options.context.done.push('umount');
                            fs.existsSync(options.fileDir + '/.mount') && fs.unlinkSync(options.fileDir + '/.mount');
                        }
                    });
                }
            });
		}
	}
    if (options.mountType === 'CIFS') {
        setTimeout(function() {
            child_process.exec(`${rootMount} -t cifs -o ${options.user ? 'username=' + options.user + ',password=' + options.pass : ''},rw,file_mode=0777,dir_mode=0777,${options.smb} ${options.mount}${options.dir} ${options.backupDir}`, (error, stdout, stderr) => {
                if (error) {
                    child_process.exec(`${rootMount} -t cifs -o ${options.user ? 'username=' + options.user + ',password=' + options.pass : ''},rw,file_mode=0777,dir_mode=0777 ${options.mount}${options.dir} ${options.backupDir}`, (error, stdout, stderr) => {
                        if (error) {
                            options.context.errors.mount = error;
                            log.error(`[${options.name} ${stderr}`);
                            callback(error);
                        } else {
                            options.context.done.push('mount');
                            fs.writeFileSync(options.fileDir + '/.mount', options.mountType);
                            callback(null, stdout);
                        }
                    });
                } else {
                    options.context.done.push('mount');
                    fs.writeFileSync(options.fileDir + '/.mount', options.mountType);
                    callback(null, stdout);
                }
            });
        }, waitTime);
    }
    if (options.mountType === 'NFS') {
        setTimeout(function() {
            child_process.exec(`${rootMount} ${options.mount}:${options.dir} ${options.backupDir}`, (error, stdout, stderr) => {
                if (error) {
                    options.context.errors.mount = error;
                    log.error(`[${options.name} ${stderr}`);
                    callback(error);
                } else {
                    options.context.done.push('mount');
                    fs.writeFileSync(options.fileDir + '/.mount', options.mountType);
                    callback(null, stdout);
                }
            });
        }, waitTime);    
    }
    if (options.mountType === 'Copy') {
		callback(null);
    }
}

module.exports = {
    command,
    ignoreErrors: true
};