cryptpad/lib/historyKeeper.js

235 lines
8.6 KiB
JavaScript

/* jshint esversion: 6 */
const nThen = require('nthen');
const RPC = require("./rpc");
const HK = require("./hk-util.js");
const Store = require("./storage/file");
const BlobStore = require("./storage/blob");
const Workers = require("./workers/index");
const Core = require("./commands/core");
module.exports.create = function (Env, cb) {
const Log = Env.Log;
Log.silly('HK_LOADING', 'LOADING HISTORY_KEEPER MODULE');
Env.historyKeeper = {
metadata_cache: Env.metadata_cache,
channel_cache: Env.channel_cache,
id: Env.id,
channelMessage: function (Server, channel, msgStruct, cb) {
// netflux-server emits 'channelMessage' events whenever someone broadcasts to a channel
// historyKeeper stores these messages if the channel id indicates that they are
// a channel type with permanent history
HK.onChannelMessage(Env, Server, channel, msgStruct, cb);
},
channelClose: function (channelName) {
// netflux-server emits 'channelClose' events whenever everyone leaves a channel
// we drop cached metadata and indexes at the same time
HK.dropChannel(Env, channelName);
},
channelOpen: function (Server, channelName, userId, wait) {
Env.channel_cache[channelName] = Env.channel_cache[channelName] || {};
var sendHKJoinMessage = function () {
Server.send(userId, [
0,
Env.id,
'JOIN',
channelName
]);
};
// a little backwards compatibility in case you don't have the latest server
// allow lists won't work unless you update, though
if (typeof(wait) !== 'function') { return void sendHKJoinMessage(); }
var next = wait();
var cb = function (err, info) {
next(err, info, sendHKJoinMessage);
};
// only conventional channels can be restricted
if ((channelName || "").length !== HK.STANDARD_CHANNEL_LENGTH) {
return void cb();
}
// gets and caches the metadata...
HK.getMetadata(Env, channelName, function (err, metadata) {
if (err) {
Log.error('HK_METADATA_ERR', {
channel: channelName,
error: err,
});
}
if (metadata && metadata.selfdestruct && metadata.selfdestruct !== Env.id) {
HK.expireChannel(Env, channelName);
return void cb('ESELFDESTRUCT');
}
if (Env.selfDestructTo && Env.selfDestructTo[channelName]) {
clearTimeout(Env.selfDestructTo[channelName]);
}
if (!metadata || (metadata && !metadata.restricted)) {
// the channel doesn't have metadata, or it does and it's not restricted
// either way, let them join.
return void cb();
}
// this channel is restricted. verify that the user in question is in the allow list
// construct a definitive list (owners + allowed)
var allowed = HK.listAllowedUsers(metadata);
// and get the list of keys for which this user has already authenticated
var session = HK.getNetfluxSession(Env, userId);
if (HK.isUserSessionAllowed(allowed, session)) {
return void cb();
}
// If the channel is restricted, send the history keeper ID so that they
// can try to authenticate
allowed.unshift(Env.id);
// otherwise they're not allowed.
// respond with a special error that includes the list of keys
// which would be allowed...
// FIXME RESTRICT bonus points if you hash the keys to limit data exposure
cb("ERESTRICTED", allowed);
});
},
sessionClose: function (userId, reason) {
HK.closeNetfluxSession(Env, userId);
if (['BAD_MESSAGE', 'SEND_MESSAGE_FAIL_2'].indexOf(reason) !== -1) {
if (reason && reason.code === 'ECONNRESET') { return; }
return void Log.error('SESSION_CLOSE_WITH_ERROR', {
userId: userId,
reason: reason,
});
}
if (['SOCKET_CLOSED', 'SOCKET_ERROR'].indexOf(reason)) { return; }
Log.verbose('SESSION_CLOSE_ROUTINE', {
userId: userId,
reason: reason,
});
},
directMessage: function (Server, seq, userId, json) {
// netflux-server allows you to register an id with a handler
// this handler is invoked every time someone sends a message to that id
HK.onDirectMessage(Env, Server, seq, userId, json);
},
};
Log.verbose('HK_ID', 'History keeper ID: ' + Env.id);
var pinPath = Env.paths.pin;
nThen(function (w) {
// create a pin store
Store.create({
filePath: pinPath,
archivePath: Env.paths.archive,
// indicate that archives should be put in a 'pins' archvie folder
volumeId: 'pins',
}, w(function (err, s) {
if (err) { throw err; }
Env.pinStore = s;
}));
// create a channel store
Store.create({
filePath: Env.paths.data,
archivePath: Env.paths.archive,
}, w(function (err, _store) {
if (err) { throw err; }
Env.msgStore = _store; // API used by rpc
Env.store = _store; // API used by historyKeeper
}));
// create a blob store
BlobStore.create({
blobPath: Env.paths.blob,
blobStagingPath: Env.paths.staging,
archivePath: Env.paths.archive,
getSession: function (safeKey) {
return Core.getSession(Env.Sessions, safeKey);
},
}, w(function (err, blob) {
if (err) { throw new Error(err); }
Env.blobStore = blob;
}));
}).nThen(function (w) {
Workers.initialize(Env, {
blobPath: Env.paths.blob,
blobStagingPath: Env.paths.staging,
taskPath: Env.paths.task,
pinPath: Env.paths.pin,
filePath: Env.paths.data,
archivePath: Env.paths.archive,
blockPath: Env.paths.block,
inactiveTime: Env.inactiveTime,
archiveRetentionTime: Env.archiveRetentionTime,
accountRetentionTime: Env.accountRetentionTime,
maxWorkers: Env.maxWorkers,
}, w(function (err) {
if (err) {
throw new Error(err);
}
}));
}).nThen(function () {
var tasks_running;
Env.intervals.taskExpiration = setInterval(function () {
if (Env.disableIntegratedTasks) { return; }
if (tasks_running) { return; }
tasks_running = true;
Env.runTasks(function (err) {
if (err) {
Log.error('TASK_RUNNER_ERR', err);
}
tasks_running = false;
});
}, 1000 * 60 * 5); // run every five minutes
}).nThen(function () {
const ONE_DAY = 24 * 1000 * 60 * 60;
// setting the time of the last eviction to "now"
// effectively makes it so that we'll start evicting after the server
// has been up for at least one day
var active = false;
Env.intervals.eviction = setInterval(function () {
if (Env.disableIntegratedEviction) { return; }
if (active) { return; }
var now = +new Date();
// evict inactive data once per day
if ((now - ONE_DAY) < Env.lastEviction) { return; }
active = true;
Env.evictInactive(function (err, report) {
if (err) {
// NO_INACTIVE_TIME
Log.error('EVICT_INACTIVE_MAIN_ERROR', err);
}
active = false;
Env.lastEviction = now;
if (report) {
Log.info('EVICT_INACTIVE_REPORT', report);
}
Env.evictionReport = report || {};
});
}, 60 * 1000);
}).nThen(function () {
RPC.create(Env, function (err, _rpc) {
if (err) { throw err; }
Env.rpc = _rpc;
cb(void 0, Env.historyKeeper);
});
});
};