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server.js
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server.js
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var mineos = require('./mineos');
var async = require('async');
var path = require('path');
var events = require('events');
var os = require('os');
var logging = require('winston');
var fs = require('fs-extra');
var server = exports;
logging.add(logging.transports.File, {
filename: '/var/log/mineos.log',
handleExceptions: true
});
server.backend = function(base_dir, socket_emitter, user_config) {
var self = this;
self.servers = {};
self.profiles = [];
self.front_end = socket_emitter;
self.commit_msg = '';
process.umask(0002);
fs.ensureDirSync(base_dir);
fs.ensureDirSync(path.join(base_dir, mineos.DIRS['servers']));
fs.ensureDirSync(path.join(base_dir, mineos.DIRS['backup']));
fs.ensureDirSync(path.join(base_dir, mineos.DIRS['archive']));
fs.ensureDirSync(path.join(base_dir, mineos.DIRS['import']));
fs.ensureDirSync(path.join(base_dir, mineos.DIRS['profiles']));
fs.chmod(path.join(base_dir, mineos.DIRS['import']), 0777);
(function() {
var which = require('which');
async.waterfall([
async.apply(which, 'git'),
function(path, cb) {
var child = require('child_process');
var opts = {cwd: __dirname};
child.execFile(path, [ 'show', '--oneline', '-s' ], opts, cb);
},
function(stdout, stderr, cb) {
self.commit_msg = (stdout ? stdout : '');
logging.info('Starting up server, using commit:', self.commit_msg);
cb();
}
])
})();
(function() {
//thanks to https://github.com/flareofghast/node-advertiser/blob/master/advert.js
var dgram = require('dgram');
var udp_broadcaster = {};
var UDP_DEST = '255.255.255.255';
var UDP_PORT = 4445;
var BROADCAST_DELAY_MS = 4000;
async.forever(
function(next) {
for (var s in self.servers) {
self.servers[s].broadcast_to_lan(function(msg, server_ip) {
if (msg) {
if (udp_broadcaster[server_ip]) {
udp_broadcaster[server_ip].send(msg, 0, msg.length, UDP_PORT, UDP_DEST);
} else {
udp_broadcaster[server_ip] = dgram.createSocket('udp4');
udp_broadcaster[server_ip].bind(UDP_PORT, server_ip);
udp_broadcaster[server_ip].on("listening", function () {
udp_broadcaster[server_ip].setBroadcast(true);
udp_broadcaster[server_ip].send(msg, 0, msg.length, UDP_PORT, UDP_DEST);
});
udp_broadcaster[server_ip].on("error", function (err) {
logging.error("Cannot bind broadcaster to ip " + server_ip);
});
}
}
})
}
setTimeout(next, BROADCAST_DELAY_MS);
}
)
})();
(function() {
var procfs = require('procfs-stats');
var HOST_HEARTBEAT_DELAY_MS = 1000;
function host_heartbeat() {
async.waterfall([
async.apply(procfs.meminfo)
], function(err, meminfo) {
self.front_end.emit('host_heartbeat', {
'uptime': os.uptime(),
'freemem': ((meminfo && meminfo['MemAvailable']) ? meminfo['MemAvailable'] * 1024 : os.freemem()),
'loadavg': os.loadavg()
})
})
}
setInterval(host_heartbeat, HOST_HEARTBEAT_DELAY_MS);
})();
(function() {
var server_path = path.join(base_dir, mineos.DIRS['servers']);
function discover() {
//http://stackoverflow.com/a/24594123/1191579
return fs.readdirSync(server_path).filter(function(p) {
try {
return fs.statSync(path.join(server_path, p)).isDirectory();
} catch (e) {
logging.warn("Filepath {0} does not point to an existing directory".format(path.join(server_path,p)));
}
});
}
function track(sn) {
self.servers[sn] = null;
//if new server_container() isn't instant, double broadcast might trigger this if/then twice
//setting to null is immediate and prevents double execution
self.servers[sn] = new server_container(sn, user_config, self.front_end);
self.front_end.emit('track_server', sn);
}
function untrack(sn) {
try {
self.servers[sn].cleanup();
delete self.servers[sn];
} catch (e) {
//if server has already been deleted and this is running for reasons unknown, catch and ignore
} finally {
self.front_end.emit('untrack_server', sn);
}
}
var discovered_servers = discover();
for (var i in discovered_servers)
track(discovered_servers[i]);
fs.watch(server_path, function() {
var current_servers = discover();
for (var i in current_servers)
if (!(current_servers[i] in self.servers)) //if detected directory not a discovered server, track
track(current_servers[i]);
for (var s in self.servers)
if (current_servers.indexOf(s) < 0)
untrack(s);
})
})();
(function() {
var fireworm = require('fireworm');
var importable_archives = path.join(base_dir, mineos.DIRS['import']);
var fw = fireworm(importable_archives);
fw.add('**/*.zip');
fw.add('**/*.tar');
fw.add('**/*.tgz');
fw.add('**/*.tar.gz');
fw
.on('add', function(fp) {
logging.info('[WEBUI] New file found in import directory', fp);
self.send_importable_list();
})
.on('remove', function(fp) {
logging.info('[WEBUI] File removed from import directory', fp);
self.send_importable_list();
})
})();
self.start_servers = function() {
var MS_TO_PAUSE = 10000;
async.eachLimit(
Object.keys(self.servers),
1,
function(server_name, callback) {
self.servers[server_name].onreboot_start(function(err) {
if (err)
logging.error('[{0}] Aborted server startup; condition not met:'.format(server_name), err);
else
logging.info('[{0}] Server started. Waiting {1} ms...'.format(server_name, MS_TO_PAUSE));
setTimeout(callback, (err ? 1 : MS_TO_PAUSE));
});
},
function(err) {}
)
}
setTimeout(self.start_servers, 5000);
self.shutdown = function() {
for (var server_name in self.servers)
self.servers[server_name].cleanup();
}
self.send_profile_list = function(send_existing) {
if (send_existing && self.profiles.length) //if requesting to just send what you already have AND they are already present
self.front_end.emit('profile_list', self.profiles);
else {
var request = require('request');
var profile_dir = path.join(base_dir, mineos.DIRS['profiles']);
var SIMULTANEOUS_DOWNLOADS = 3;
var SOURCES = [];
var profiles = [];
try {
SOURCES = require('./profiles.js')['profile_manifests'];
} catch (e) {
logging.error('Unable to parse profiles.js--no profiles loaded!');
logging.error(e);
return; // just bail out if profiles.js cannot be required for syntax issues
}
async.forEachOfLimit(
SOURCES,
SIMULTANEOUS_DOWNLOADS,
function(collection, key, outer_cb) {
if ('request_args' in collection) {
async.waterfall([
async.apply(request, collection.request_args),
function(response, body, cb) {
cb(response.statusCode != 200, body)
},
function(body, cb) {
collection.handler(profile_dir, body, cb);
}
], function(err, output) {
if (err || typeof output == 'undefined')
logging.error("Unable to retrieve profile: {0}. The definition for this profile may be improperly formed or is pointing to an invalid URI.".format(key));
else {
logging.info("Downloaded information for collection: {0} ({1} entries)".format(collection.name, output.length));
profiles = profiles.concat(output);
}
outer_cb();
}); //end waterfall
} else { //for profiles like paperspigot which are hardcoded
async.waterfall([
function(cb) {
collection.handler(profile_dir, cb);
}
], function(err, output) {
if (err || typeof output == 'undefined')
logging.error("Unable to retrieve profile: {0}. The definition for this profile may be improperly formed or is pointing to an invalid URI.".format(key));
else {
logging.info("Downloaded information for collection: {0} ({1} entries)".format(collection.name, output.length));
profiles = profiles.concat(output);
}
outer_cb();
}); //end waterfall
}
},
function(err) {
self.profiles = profiles;
self.front_end.emit('profile_list', self.profiles);
}
) //end forEachOfLimit
}
}
self.send_spigot_list = function() {
var profiles_dir = path.join(base_dir, mineos.DIRS['profiles']);
var spigot_profiles = {};
async.waterfall([
async.apply(fs.readdir, profiles_dir),
function(listing, cb) {
for (var i in listing) {
var match = listing[i].match(/(paper)?spigot_([\d\.]+)/);
if (match)
spigot_profiles[match[0]] = {
'directory': match[0],
'jarfiles': fs.readdirSync(path.join(profiles_dir, match[0])).filter(function(a) { return a.match(/.+\.jar/i) })
}
}
cb();
}
], function(err) {
self.front_end.emit('spigot_list', spigot_profiles);
})
}
self.send_locale_list = function() {
async.waterfall([
async.apply(fs.readdir, path.join(__dirname, 'html', 'locales')),
function (locale_paths, cb) {
var locales = locale_paths.map(function(r) {
return r.match(/^locale-([a-z]{2}_[A-Z]{2}).json$/)[1];
})
cb(null, locales);
}
], function(err, output) {
logging.info(output);
if (!err)
self.front_end.emit('locale_list', output);
else
self.front_end.emit('locale_list', ['en_US']);
})
}
self.front_end.on('connection', function(socket) {
var userid = require('userid');
var fs = require('fs-extra');
var ip_address = socket.request.connection.remoteAddress;
var username = socket.request.user.username;
var OWNER_CREDS = {
uid: userid.uid(username),
gid: userid.gids(username)[0]
}
function webui_dispatcher (args) {
logging.info('[WEBUI] Received emit command from {0}:{1}'.format(ip_address, username), args);
switch (args.command) {
case 'create':
var instance = new mineos.mc(args.server_name, base_dir);
async.series([
async.apply(instance.verify, '!exists'),
function(cb) {
var whitelisted_creators = [username]; //by default, accept create attempt by current user
if ( (user_config || {}).creators ) { //if creators key:value pair exists, use it
whitelisted_creators = user_config['creators'].split(',');
whitelisted_creators = whitelisted_creators.filter(function(e){return e}); //remove non-truthy entries like ''
whitelisted_creators = whitelisted_creators.map(function(e) {return e.trim()}); //remove trailing and tailing whitespace
logging.info('Explicitly authorized server creators are:', whitelisted_creators);
}
cb(!(whitelisted_creators.indexOf(username) >= 0))
},
async.apply(instance.create, OWNER_CREDS),
async.apply(instance.overlay_sp, args.properties),
], function(err, results) {
if (!err)
logging.info('[{0}] Server created in filesystem.'.format(args.server_name));
else {
logging.info('[{0}] Failed to create server in filesystem as user {1}.'.format(args.server_name, username));
logging.error(err);
}
})
break;
case 'create_unconventional_server':
var instance = new mineos.mc(args.server_name, base_dir);
async.series([
async.apply(instance.verify, '!exists'),
async.apply(instance.create_unconventional_server, OWNER_CREDS),
], function(err, results) {
if (!err)
logging.info('[{0}] Server (unconventional) created in filesystem.'.format(args.server_name));
else
logging.error(err);
})
break;
case 'download':
for (var idx in self.profiles) {
if (self.profiles[idx].id == args.profile.id) {
var SOURCES = require('./profiles.js')['profile_manifests'];
var profile_dir = path.join(base_dir, 'profiles', args.profile.id);
var dest_filepath = path.join(profile_dir, args.profile.filename);
async.series([
async.apply(fs.ensureDir, profile_dir),
function(cb) {
var progress = require('request-progress');
var request = require('request');
progress(request({url: args.profile.url, headers: {'User-Agent': 'MineOS-node'}}), { throttle: 250, delay: 100 })
.on('error', function(err) {
logging.error(err);
})
.on('progress', function(state) {
args.profile.progress = state;
self.front_end.emit('file_progress', args.profile);
})
.on('complete', function(response) {
if (response.statusCode == 200) {
logging.info('[WEBUI] Successfully downloaded {0} to {1}'.format(args.profile.url, dest_filepath));
} else {
logging.error('[WEBUI] Server was unable to download file:', args.profile.url);
logging.error('[WEBUI] Remote server returned status {0} with headers:'.format(response.statusCode), response.headers);
}
cb(response.statusCode != 200);
})
.pipe(fs.createWriteStream(dest_filepath))
},
function(cb) {
switch(path.extname(args.profile.filename).toLowerCase()) {
case '.jar':
cb();
break;
case '.zip':
var unzip = require('unzip');
fs.createReadStream(dest_filepath)
.pipe(unzip.Extract({ path: profile_dir })
.on('close', function() { cb() })
.on('error', function() {
//Unzip error occurred, falling back to adm-zip
var admzip = require('adm-zip');
var zip = new admzip(dest_filepath);
zip.extractAllTo(profile_dir, true); //true => overwrite
cb();
})
);
break;
default:
cb();
break;
}
},
function(cb) {
// wide-area net try/catch. addressing issue of multiple simultaneous downloads.
// current theory: if multiple downloads occuring, and one finishes, forcing a
// redownload of profiles, SOURCES might be empty/lacking the unfinished dl.
// opting for full try/catch around postdownload to gracefully handle profile errors
try {
if ('postdownload' in SOURCES[args.profile['group']])
SOURCES[args.profile['group']].postdownload(profile_dir, dest_filepath, cb);
else
cb();
} catch (e) {
logging.error('simultaneous download race condition means postdownload hook may not have executed. redownload the profile to ensure proper operation.');
cb();
}
}
], function(err, output) {
self.send_profile_list();
})
break;
}
}
break;
case 'build_jar':
var which = require('which');
var child_process = require('child_process');
try {
var profile_path = path.join(base_dir, mineos.DIRS['profiles']);
var working_dir = path.join(profile_path, '{0}_{1}'.format(args.builder.group, args.version));
var bt_path = path.join(profile_path, args.builder.id, args.builder.filename);
var dest_path = path.join(working_dir, args.builder.filename);
var params = { cwd: working_dir };
} catch (e) {
logging.error('[WEBUI] Could not build jar; insufficient/incorrect arguments provided:', args);
logging.error(e);
return;
}
async.series([
async.apply(fs.mkdir, working_dir),
async.apply(fs.copy, bt_path, dest_path),
function(cb) {
var binary = which.sync('java');
var proc = child_process.spawn(binary, ['-Xms512M', '-jar', dest_path, '--rev', args.version], params);
proc.stdout.on('data', function (data) {
self.front_end.emit('build_jar_output', data.toString());
//logging.log('stdout: ' + data);
});
logging.info('[WEBUI] BuildTools starting with arguments:', args)
proc.stderr.on('data', function (data) {
self.front_end.emit('build_jar_output', data.toString());
logging.error('stderr: ' + data);
});
proc.on('close', function (code) {
cb(code);
});
}
], function(err, results) {
logging.info('[WEBUI] BuildTools jar compilation finished {0} in {1}'.format( (err ? 'unsuccessfully' : 'successfully'), working_dir));
logging.info('[WEBUI] Buildtools used: {0}'.format(dest_path));
var retval = {
'command': 'BuildTools jar compilation',
'success': true,
'help_text': ''
}
if (err) {
retval['success'] = false;
retval['help_text'] = "Error {0} ({1}): {2}".format(err.errno, err.code, err.path);
}
self.front_end.emit('host_notice', retval);
self.send_spigot_list();
})
break;
case 'delete_build':
if (args.type == 'spigot')
var spigot_path = path.join(base_dir, mineos.DIRS['profiles'], 'spigot_' + args.version);
else {
logging.error('[WEBUI] Unknown type of craftbukkit server -- potential modified webui request?');
return;
}
fs.remove(spigot_path, function(err) {
var retval = {
'command': 'Delete BuildTools jar',
'success': true,
'help_text': ''
}
if (err) {
retval['success'] = false;
retval['help_text'] = "Error {0}".format(err);
}
self.front_end.emit('host_notice', retval);
self.send_spigot_list();
})
break;
case 'copy_to_server':
var rsync = require('rsync');
if (args.type == 'spigot')
var spigot_path = path.join(base_dir, mineos.DIRS['profiles'], 'spigot_' + args.version) + '/';
else {
logging.error('[WEBUI] Unknown type of craftbukkit server -- potential modified webui request?');
return;
}
var dest_path = path.join(base_dir, mineos.DIRS['servers'], args.server_name) + '/';
var obj = rsync.build({
source: spigot_path,
destination: dest_path,
flags: 'au',
shell:'ssh'
});
obj.set('--include', '*.jar');
obj.set('--exclude', '*');
obj.set('--prune-empty-dirs');
obj.set('--chown', '{0}:{1}'.format(OWNER_CREDS.uid, OWNER_CREDS.gid));
obj.execute(function(error, code, cmd) {
var retval = {
'command': 'BuildTools jar copy',
'success': true,
'help_text': ''
}
if (error) {
retval['success'] = false;
retval['help_text'] = "Error {0} ({1})".format(error, code);
}
self.front_end.emit('host_notice', retval);
for (var s in self.servers)
self.front_end.emit('track_server', s);
});
break;
case 'refresh_server_list':
for (var s in self.servers)
self.front_end.emit('track_server', s);
break;
case 'refresh_profile_list':
self.send_profile_list();
self.send_spigot_list();
break;
case 'create_from_archive':
var instance = new mineos.mc(args.new_server_name, base_dir);
if (args.awd_dir)
var filepath = path.join(instance.env.base_dir, mineos.DIRS['archive'], args.awd_dir, args.filename);
else
var filepath = path.join(instance.env.base_dir, mineos.DIRS['import'], args.filename);
async.series([
async.apply(instance.verify, '!exists'),
async.apply(instance.create_from_archive, OWNER_CREDS, filepath)
], function(err, results) {
if (!err) {
logging.info('[{0}] Server created in filesystem.'.format(args.new_server_name));
setTimeout(function(){ self.front_end.emit('track_server', args.new_server_name) }, 1000);
} else
logging.error(err);
})
break;
default:
logging.warn('Command ignored: no such command {0}'.format(args.command));
break;
}
}
self.send_user_list = function() {
var passwd = require('etc-passwd');
var users = [];
var groups = [];
var gu = passwd.getUsers()
.on('user', function(user_data) {
if (user_data.username == username)
users.push({
username: user_data.username,
uid: user_data.uid,
gid: user_data.gid,
home: user_data.home
})
})
.on('end', function() {
socket.emit('user_list', users);
})
var gg = passwd.getGroups()
.on('group', function(group_data) {
if (group_data.users.indexOf(username) >= 0 || group_data.gid == userid.gids(username)[0]) {
if (group_data.gid > 0) {
groups.push({
groupname: group_data.groupname,
gid: group_data.gid
})
}
}
})
.on('end', function() {
socket.emit('group_list', groups);
})
}
logging.info('[WEBUI] {0} connected from {1}'.format(username, ip_address));
socket.emit('whoami', username);
socket.emit('commit_msg', self.commit_msg);
socket.emit('change_locale', (user_config || {})['webui_locale']);
socket.emit('optional_columns', (user_config || {})['optional_columns']);
for (var server_name in self.servers)
socket.emit('track_server', server_name);
socket.on('command', webui_dispatcher);
self.send_user_list();
self.send_profile_list(true);
self.send_spigot_list();
self.send_importable_list();
self.send_locale_list();
})
self.send_importable_list = function() {
var importable_archives = path.join(base_dir, mineos.DIRS['import']);
var all_info = [];
fs.readdir(importable_archives, function(err, files) {
if (!err) {
var fullpath = files.map(function(value, index) {
return path.join(importable_archives, value);
});
var stat = fs.stat;
async.map(fullpath, stat, function(inner_err, results){
results.forEach(function(value, index) {
all_info.push({
time: value.mtime,
size: value.size,
filename: files[index]
})
})
all_info.sort(function(a, b) {
return a.time.getTime() - b.time.getTime();
});
self.front_end.emit('archive_list', all_info);
});
}
})
}
return self;
}
function server_container(server_name, user_config, socket_io) {
// when evoked, creates a permanent 'mc' instance, namespace, and place for file tails.
var self = this;
var instance = new mineos.mc(server_name, user_config.base_directory),
nsp = socket_io.of('/{0}'.format(server_name)),
tails = {},
notices = [],
cron = {},
intervals = {},
HEARTBEAT_INTERVAL_MS = 5000,
COMMIT_INTERVAL_MIN = null;
logging.info('[{0}] Discovered server'.format(server_name));
// check that awd and bwd also exist alongside cwd or create and chown
var missing_dir = false;
try { fs.accessSync(instance.env.bwd, fs.F_OK) } catch (e) { missing_dir = true }
try { fs.accessSync(instance.env.awd, fs.F_OK) } catch (e) { missing_dir = true }
if (missing_dir) {
async.series([
async.apply(fs.ensureDir, instance.env.bwd),
async.apply(fs.ensureDir, instance.env.awd),
async.apply(instance.sync_chown)
]);
}
//async.series([ async.apply(instance.sync_chown) ]);
//uncomment sync_chown to correct perms on server discovery
//commenting out for high cpu usage on startup
var files_to_tail = ['logs/latest.log', 'server.log', 'proxy.log.0', 'logs/fml-server-latest.log'];
if ( (user_config || {}).additional_logfiles ) { //if additional_logfiles key:value pair exists, use it
var additional = user_config['additional_logfiles'].split(',');
additional = additional.filter(function(e){return e}); //remove non-truthy entries like ''
additional = additional.map(function(e) {return e.trim()}); //remove trailing and tailing whitespace
additional = additional.map(function(e) {return path.normalize(e).replace(/^(\.\.[\/\\])+/, '')}); //normalize path, remove traversal
logging.info('Explicitly added files to tail are:', additional);
files_to_tail = files_to_tail.concat(additional);
}
for (var i in files_to_tail)
make_tail(files_to_tail[i]);
(function() {
var fireworm = require('fireworm');
var skip_dirs = fs.readdirSync(instance.env.cwd).filter(function(p) {
try {
return fs.statSync(path.join(instance.env.cwd, p)).isDirectory();
} catch (e) {
logging.error(e);
return false;
}
});
var default_skips = ['world', 'world_the_end', 'world_nether', 'dynmap', 'plugins', 'web', 'region', 'playerdata', 'stats', 'data'];
for (var i in default_skips)
if (skip_dirs.indexOf(default_skips[i]) == -1)
skip_dirs.push(default_skips[i]);
skip_dirs = skip_dirs.filter(function(e) { return e !== 'logs' }); // remove 'logs' from blacklist!
logging.info('[{0}] Using skipDirEntryPatterns: {1}'.format(server_name, skip_dirs));
var fw = fireworm(instance.env.cwd, {skipDirEntryPatterns: skip_dirs});
for (var i in skip_dirs) {
fw.ignore(skip_dirs[i]);
}
fw.add('**/server.properties');
fw.add('**/server.config');
fw.add('**/cron.config');
fw.add('**/eula.txt');
fw.add('**/server-icon.png');
fw.add('**/config.yml');
var FS_DELAY = 250;
function handle_event(fp) {
// because it is unknown when fw triggers on add/change and
// further because if it catches DURING the write, it will find
// the file has 0 size, adding arbitrary delay.
// process.nexttick didnt work.
var file_name = path.basename(fp);
switch (file_name) {
case 'server.properties':
setTimeout(broadcast_sp, FS_DELAY);
break;
case 'server.config':
setTimeout(broadcast_sc, FS_DELAY);
break;
case 'cron.config':
setTimeout(broadcast_cc, FS_DELAY);
break;
case 'eula.txt':
setTimeout(emit_eula, FS_DELAY);
break;
case 'server-icon.png':
setTimeout(broadcast_icon, FS_DELAY);
break;
case 'config.yml':
setTimeout(broadcast_cy, FS_DELAY);
break;
}
}
fw.on('add', handle_event);
fw.on('change', handle_event);
})();
intervals['heartbeat'] = setInterval(heartbeat, HEARTBEAT_INTERVAL_MS);
function heartbeat() {
clearInterval(intervals['heartbeat']);
intervals['heartbeat'] = setInterval(heartbeat, HEARTBEAT_INTERVAL_MS * 3);
async.parallel({
'up': function(cb) { instance.property('up', function(err, is_up) { cb(null, is_up) }) },
'memory': function(cb) { instance.property('memory', function(err, mem) { cb(null, err ? {} : mem) }) },
'ping': function(cb) {
instance.property('unconventional', function(err, is_unconventional) {
if (is_unconventional)
cb(null, {}); //ignore ping--wouldn't respond in any meaningful way
else
instance.property('ping', function(err, ping) { cb(null, err ? {} : ping) })
})
},
'query': function(cb) {
instance.property('server.properties', function(err, dict) {
if ((dict || {})['enable-query'])
instance.property('query', cb);
else
cb(null, {}); //ignore query--wouldn't respond in any meaningful way
})
}
}, function(err, retval) {
clearInterval(intervals['heartbeat']);
intervals['heartbeat'] = setInterval(heartbeat, HEARTBEAT_INTERVAL_MS);
nsp.emit('heartbeat', {
'server_name': server_name,
'timestamp': Date.now(),
'payload': retval
})
})
}
intervals['world_commit'] = setInterval(world_committer, 1 * 60 * 1000);
function world_committer() {
async.waterfall([
async.apply(instance.property, 'commit_interval'),
function(minutes, cb) {
if (minutes != COMMIT_INTERVAL_MIN) { //upon change or init
COMMIT_INTERVAL_MIN = minutes;
if (minutes > 0) {
logging.info('[{0}] committing world to disk every {1} minutes.'.format(server_name, minutes));
intervals['commit'] = setInterval(instance.saveall, minutes * 60 * 1000);
} else {
logging.info('[{0}] not committing world to disk automatically (interval set to {1})'.format(server_name, minutes));
clearInterval(intervals['commit']);
}
}
}
])
}
(function() {
var CronJob = require('cron').CronJob;
function cron_dispatcher(args) {
var introspect = require('introspect');
var fn, required_args;
var arg_array = [];
fn = instance[args.command];
required_args = introspect(fn);
for (var i in required_args) {
// all callbacks expected to follow the pattern (success, payload).
if (required_args[i] == 'callback')
arg_array.push(function(err, payload) {
args.success = !err;
args.err = err;
args.time_resolved = Date.now();
if (err)
logging.error('[{0}] command "{1}" errored out:'.format(server_name, args.command), args);
})
else if (required_args[i] in args) {
arg_array.push(args[required_args[i]])
}
}
fn.apply(instance, arg_array);
}
instance.crons(function(err, cron_dict) {
for (var cronhash in cron_dict) {
if (cron_dict[cronhash].enabled) {
try {
cron[cronhash] = new CronJob({
cronTime: cron_dict[cronhash].source,
onTick: function() {
cron_dispatcher(this);
},
start: true,
context: cron_dict[cronhash]
});
} catch (e) {
// catches invalid cron expressions
logging.warn('[{0}] invalid cron expression:'.format(server_name), cronhash, cron_dict[cronhash]);
instance.set_cron(cronhash, false, function(){});
}
}
}
})
})();
self.broadcast_to_lan = function(callback) {
async.waterfall([
async.apply(instance.verify, 'exists'),
async.apply(instance.verify, 'up'),
async.apply(instance.sc),
function(sc_data, cb) {
var broadcast_value = (sc_data.minecraft || {}).broadcast;
cb(!broadcast_value) //logically notted to make broadcast:true pass err cb
},
async.apply(instance.sp)
], function(err, sp_data) {
if (err)
callback(null);
else {
var msg = Buffer.from("[MOTD]" + sp_data.motd + "[/MOTD][AD]" + sp_data['server-port'] + "[/AD]");
var server_ip = sp_data['server-ip'];
callback(msg, server_ip);
}
})
}
self.onreboot_start = function(callback) {
async.waterfall([
async.apply(instance.property, 'onreboot_start'),
function(autostart, cb) {
logging.info('[{0}] autostart = {1}'.format(server_name, autostart));
cb(!autostart); //logically NOT'ing so that autostart = true continues to next func
},
async.apply(instance.start)
], function(err) {
callback(err);
})
}
self.cleanup = function () {
for (var t in tails)
tails[t].unwatch();
for (var i in intervals)
clearInterval(intervals[i]);
nsp.removeAllListeners();
}
function emit_eula() {
var fs = require('fs-extra');
var eula_path = path.join(instance.env.cwd, 'eula.txt');
async.waterfall([
async.apply(instance.property, 'eula'),
function(accepted, cb) {
logging.info('[{0}] eula.txt detected: {1} (eula={2})'.format(server_name,
(accepted ? 'ACCEPTED' : 'NOT YET ACCEPTED'),
accepted));
nsp.emit('eula', accepted);
cb();
},
])
}
function broadcast_icon() {
// function to encode file data to base64 encoded string
//http://www.hacksparrow.com/base64-encoding-decoding-in-node-js.html
var fs = require('fs');
var filepath = path.join(instance.env.cwd, 'server-icon.png');
fs.readFile(filepath, function(err, data) {
if (!err && data.toString('hex',0,4) == '89504e47') //magic number for png first 4B
nsp.emit('server-icon.png', Buffer.from(data).toString('base64'));
});
}
function broadcast_cy() {
// function to broadcast raw config.yml from bungeecord
var fs = require('fs');
var filepath = path.join(instance.env.cwd, 'config.yml');
fs.readFile(filepath, function(err, data) {
if (!err)
nsp.emit('config.yml', Buffer.from(data).toString());
});
}
function broadcast_notices() {
nsp.emit('notices', notices);
}
function broadcast_sp() {
instance.sp(function(err, sp_data) {
logging.debug('[{0}] broadcasting server.properties'.format(server_name));
nsp.emit('server.properties', sp_data);
})
}
function broadcast_sc() {
instance.sc(function(err, sc_data) {
logging.debug('[{0}] broadcasting server.config'.format(server_name));
if (!err)
nsp.emit('server.config', sc_data);
})
}