enigma-bbs/core/scanner_tossers/ftn_bso.js

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/* jslint node: true */
'use strict';
// ENiGMA½
let MessageScanTossModule = require('../msg_scan_toss_module.js').MessageScanTossModule;
let Config = require('../config.js').config;
let ftnMailPacket = require('../ftn_mail_packet.js');
let ftnUtil = require('../ftn_util.js');
let Address = require('../ftn_address.js');
let Log = require('../logger.js').log;
let ArchiveUtil = require('../archive_util.js');
let msgDb = require('../database.js').dbs.message;
let Message = require('../message.js');
let moment = require('moment');
let _ = require('lodash');
let paths = require('path');
let mkdirp = require('mkdirp');
let async = require('async');
let fs = require('fs');
let later = require('later');
let temp = require('temp').track(); // track() cleans up temp dir/files for us
let assert = require('assert');
let gaze = require('gaze');
exports.moduleInfo = {
name : 'FTN BSO',
desc : 'BSO style message scanner/tosser for FTN networks',
author : 'NuSkooler',
};
/*
:TODO:
* Support (approx) max bundle size
* Support NetMail
* NetMail needs explicit isNetMail() check
* NetMail filename / location / etc. is still unknown - need to post on groups & get real answers
*/
exports.getModule = FTNMessageScanTossModule;
const SCHEDULE_REGEXP = /(?:^|or )?(@watch\:|@immediate)([^\0]+)?$/;
function FTNMessageScanTossModule() {
MessageScanTossModule.call(this);
let self = this;
this.archUtil = new ArchiveUtil();
this.archUtil.init();
if(_.has(Config, 'scannerTossers.ftn_bso')) {
this.moduleConfig = Config.scannerTossers.ftn_bso;
}
this.getDefaultNetworkName = function() {
if(this.moduleConfig.defaultNetwork) {
return this.moduleConfig.defaultNetwork;
}
const networkNames = Object.keys(Config.messageNetworks.ftn.networks);
if(1 === networkNames.length) {
return networkNames[0];
}
};
this.isDefaultDomainZone = function(networkName, address) {
const defaultNetworkName = this.getDefaultNetworkName();
return(networkName === defaultNetworkName && address.zone === this.moduleConfig.defaultZone);
};
this.getNetworkNameByAddress = function(remoteAddress) {
return _.findKey(Config.messageNetworks.ftn.networks, network => {
const localAddress = Address.fromString(network.localAddress);
return !_.isUndefined(localAddress) && localAddress.isEqual(remoteAddress);
});
};
this.getNetworkNameByAddressPattern = function(remoteAddressPattern) {
return _.findKey(Config.messageNetworks.ftn.networks, network => {
const localAddress = Address.fromString(network.localAddress);
return !_.isUndefined(localAddress) && localAddress.isPatternMatch(remoteAddressPattern);
});
};
this.getLocalAreaTagByFtnAreaTag = function(ftnAreaTag) {
return _.findKey(Config.messageNetworks.ftn.areas, areaConf => {
return areaConf.tag === ftnAreaTag;
});
};
this.getExportType = function(nodeConfig) {
return _.isString(nodeConfig.exportType) ? nodeConfig.exportType.toLowerCase() : 'crash';
};
/*
this.getSeenByAddresses = function(messageSeenBy) {
if(!_.isArray(messageSeenBy)) {
messageSeenBy = [ messageSeenBy ];
}
let seenByAddrs = [];
messageSeenBy.forEach(sb => {
seenByAddrs = seenByAddrs.concat(ftnUtil.parseAbbreviatedNetNodeList(sb));
});
return seenByAddrs;
};
*/
this.messageHasValidMSGID = function(msg) {
return _.isString(msg.meta.FtnKludge.MSGID) && msg.meta.FtnKludge.MSGID.length > 0;
};
this.getOutgoingPacketDir = function(networkName, destAddress) {
let dir = this.moduleConfig.paths.outbound;
if(!this.isDefaultDomainZone(networkName, destAddress)) {
const hexZone = `000${destAddress.zone.toString(16)}`.substr(-3);
dir = paths.join(dir, `${networkName.toLowerCase()}.${hexZone}`);
}
return dir;
};
this.getOutgoingPacketFileName = function(basePath, messageId, isTemp) {
//
// Generating an outgoing packet file name comes with a few issues:
// * We must use DOS 8.3 filenames due to legacy systems that receive
// the packet not understanding LFNs
// * We need uniqueness; This is especially important with packets that
// end up in bundles and on the receiving/remote system where conflicts
// with other systems could also occur
//
// There are a lot of systems in use here for the name:
// * HEX CRC16/32 of data
// * HEX UNIX timestamp
// * Mystic at least at one point, used Hex8(day of month + seconds past midnight + hundredths of second)
// See https://groups.google.com/forum/#!searchin/alt.bbs.mystic/netmail$20filename/alt.bbs.mystic/m1xLnY8i1pU/YnG2excdl6MJ
// * SBBSEcho uses DDHHMMSS - see https://github.com/ftnapps/pkg-sbbs/blob/master/docs/fidonet.txt
// * We already have a system for 8-character serial number gernation that is
// used for e.g. in FTS-0009.001 MSGIDs... let's use that!
//
const name = ftnUtil.getMessageSerialNumber(messageId);
const ext = (true === isTemp) ? 'pk_' : 'pkt';
return paths.join(basePath, `${name}.${ext}`);
};
this.getOutgoingFlowFileExtension = function(destAddress, flowType, exportType) {
let ext;
switch(flowType) {
case 'mail' : ext = `${exportType.toLowerCase()[0]}ut`; break;
case 'ref' : ext = `${exportType.toLowerCase()[0]}lo`; break;
case 'busy' : ext = 'bsy'; break;
case 'request' : ext = 'req'; break;
case 'requests' : ext = 'hrq'; break;
}
return ext;
};
this.getOutgoingFlowFileName = function(basePath, destAddress, flowType, exportType) {
let basename;
const ext = self.getOutgoingFlowFileExtension(destAddress, flowType, exportType);
if(destAddress.point) {
} else {
//
// Use |destAddress| nnnnNNNN.??? where nnnn is dest net and NNNN is dest
// node. This seems to match what Mystic does
//
basename =
`0000${destAddress.net.toString(16)}`.substr(-4) +
`0000${destAddress.node.toString(16)}`.substr(-4);
}
return paths.join(basePath, `${basename}.${ext}`);
};
this.flowFileAppendRefs = function(filePath, fileRefs, directive, cb) {
const appendLines = fileRefs.reduce( (content, ref) => {
return content + `${directive}${ref}\n`;
}, '');
fs.appendFile(filePath, appendLines, err => {
cb(err);
});
};
this.getOutgoingBundleFileName = function(basePath, sourceAddress, destAddress, cb) {
//
// Base filename is constructed as such:
// * If this |destAddress| is *not* a point address, we use NNNNnnnn where
// NNNN is 0 padded hex of dest net - source net and and nnnn is 0 padded
// hex of dest node - source node.
// * If |destAddress| is a point, NNNN becomes 0000 and nnnn becomes 'p' +
// 3 digit 0 padded hex point
//
// Extension is dd? where dd is Su...Mo and ? is 0...Z as collisions arise
//
let basename;
if(destAddress.point) {
const pointHex = `000${destAddress.point}`.substr(-3);
basename = `0000p${pointHex}`;
} else {
basename =
`0000${Math.abs(sourceAddress.net - destAddress.net).toString(16)}`.substr(-4) +
`0000${Math.abs(sourceAddress.node - destAddress.node).toString(16)}`.substr(-4);
}
//
// We need to now find the first entry that does not exist starting
// with dd0 to ddz
//
const EXT_SUFFIXES = '0123456789abcdefghijklmnopqrstuvwxyz'.split('');
let fileName = `${basename}.${moment().format('dd').toLowerCase()}`;
async.detectSeries(EXT_SUFFIXES, (suffix, callback) => {
const checkFileName = fileName + suffix;
fs.stat(paths.join(basePath, checkFileName), err => {
callback((err && 'ENOENT' === err.code) ? true : false);
});
}, finalSuffix => {
if(finalSuffix) {
cb(null, paths.join(basePath, fileName + finalSuffix));
} else {
cb(new Error('Could not acquire a bundle filename!'));
}
});
};
this.prepareMessage = function(message, options) {
//
// Set various FTN kludges/etc.
//
message.meta.FtnProperty = message.meta.FtnProperty || {};
message.meta.FtnKludge = message.meta.FtnKludge || {};
message.meta.FtnProperty.ftn_orig_node = options.network.localAddress.node;
message.meta.FtnProperty.ftn_dest_node = options.destAddress.node;
message.meta.FtnProperty.ftn_orig_network = options.network.localAddress.net;
message.meta.FtnProperty.ftn_dest_network = options.destAddress.net;
message.meta.FtnProperty.ftn_cost = 0;
message.meta.FtnProperty.ftn_tear_line = ftnUtil.getTearLine();
// :TODO: Need an explicit isNetMail() check
let ftnAttribute =
ftnMailPacket.Packet.Attribute.Local; // message from our system
if(message.isPrivate()) {
ftnAttribute |= ftnMailPacket.Packet.Attribute.Private;
//
// NetMail messages need a FRL-1005.001 "Via" line
// http://ftsc.org/docs/frl-1005.001
//
if(_.isString(message.meta.FtnKludge.Via)) {
message.meta.FtnKludge.Via = [ message.meta.FtnKludge.Via ];
}
message.meta.FtnKludge.Via = message.meta.FtnKludge.Via || [];
message.meta.FtnKludge.Via.push(ftnUtil.getVia(options.network.localAddress));
} else {
//
// Set appropriate attribute flag for export type
//
switch(this.getExportType(options.nodeConfig)) {
case 'crash' : ftnAttribute |= ftnMailPacket.Packet.Attribute.Crash; break;
case 'hold' : ftnAttribute |= ftnMailPacket.Packet.Attribute.Hold; break;
// :TODO: Others?
}
//
// EchoMail requires some additional properties & kludges
//
message.meta.FtnProperty.ftn_origin = ftnUtil.getOrigin(options.network.localAddress);
message.meta.FtnProperty.ftn_area = Config.messageNetworks.ftn.areas[message.areaTag].tag;
//
// When exporting messages, we should create/update SEEN-BY
// with remote address(s) we are exporting to.
//
const seenByAdditions =
[ `${options.network.localAddress.net}/${options.network.localAddress.node}` ].concat(Config.messageNetworks.ftn.areas[message.areaTag].uplinks);
message.meta.FtnProperty.ftn_seen_by =
ftnUtil.getUpdatedSeenByEntries(message.meta.FtnProperty.ftn_seen_by, seenByAdditions);
//
// And create/update PATH for ourself
//
message.meta.FtnKludge.PATH =
ftnUtil.getUpdatedPathEntries(message.meta.FtnKludge.PATH, options.network.localAddress);
}
message.meta.FtnProperty.ftn_attr_flags = ftnAttribute;
//
// Additional kludges
//
// Check for existence of MSGID as we may already have stored it from a previous
// export that failed to finish
//
if(!message.meta.FtnKludge.MSGID) {
message.meta.FtnKludge.MSGID = ftnUtil.getMessageIdentifier(message, options.network.localAddress);
}
message.meta.FtnKludge.TZUTC = ftnUtil.getUTCTimeZoneOffset();
//
// According to FSC-0046:
//
// "When a Conference Mail processor adds a TID to a message, it may not
// add a PID. An existing TID should, however, be replaced. TIDs follow
// the same format used for PIDs, as explained above."
//
message.meta.FtnKludge.TID = ftnUtil.getProductIdentifier();
//
// Determine CHRS and actual internal encoding name
// Try to preserve anything already here
let encoding = options.nodeConfig.encoding || 'utf8';
if(message.meta.FtnKludge.CHRS) {
const encFromChars = ftnUtil.getEncodingFromCharacterSetIdentifier(message.meta.FtnKludge.CHRS);
if(encFromChars) {
encoding = encFromChars;
}
}
options.encoding = encoding; // save for later
message.meta.FtnKludge.CHRS = ftnUtil.getCharacterSetIdentifierByEncoding(encoding);
// :TODO: FLAGS kludge?
};
this.setReplyKludgeFromReplyToMsgId = function(message, cb) {
//
// Look up MSGID kludge for |message.replyToMsgId|, if any.
// If found, we can create a REPLY kludge with the previously
// discovered MSGID.
//
if(0 === message.replyToMsgId) {
return cb(null); // nothing to do
}
Message.getMetaValuesByMessageId(message.replyToMsgId, 'FtnKludge', 'MSGID', (err, msgIdVal) => {
assert(_.isString(msgIdVal));
if(!err) {
// got a MSGID - create a REPLY
message.meta.FtnKludge.REPLY = msgIdVal;
}
cb(null); // this method always passes
});
};
// check paths, Addresses, etc.
this.isAreaConfigValid = function(areaConfig) {
if(!_.isString(areaConfig.tag) || !_.isString(areaConfig.network)) {
return false;
}
if(_.isString(areaConfig.uplinks)) {
areaConfig.uplinks = areaConfig.uplinks.split(' ');
}
return (_.isArray(areaConfig.uplinks));
};
this.hasValidConfiguration = function() {
if(!_.has(this, 'moduleConfig.nodes') || !_.has(Config, 'messageNetworks.ftn.areas')) {
return false;
}
// :TODO: need to check more!
return true;
};
this.parseScheduleString = function(schedStr) {
if(!schedStr) {
return; // nothing to parse!
}
let schedule = {};
const m = SCHEDULE_REGEXP.exec(schedStr);
if(m) {
schedStr = schedStr.substr(0, m.index).trim();
if('@watch:' === m[1]) {
schedule.watchFile = m[2];
} else if('@immediate' === m[1]) {
schedule.immediate = true;
}
}
if(schedStr.length > 0) {
const sched = later.parse.text(schedStr);
if(-1 === sched.error) {
schedule.sched = sched;
}
}
// return undefined if we couldn't parse out anything useful
if(!_.isEmpty(schedule)) {
return schedule;
}
};
this.getAreaLastScanId = function(areaTag, cb) {
const sql =
`SELECT area_tag, message_id
FROM message_area_last_scan
WHERE scan_toss = "ftn_bso" AND area_tag = ?
LIMIT 1;`;
msgDb.get(sql, [ areaTag ], (err, row) => {
cb(err, row ? row.message_id : 0);
});
};
this.setAreaLastScanId = function(areaTag, lastScanId, cb) {
const sql =
`REPLACE INTO message_area_last_scan (scan_toss, area_tag, message_id)
VALUES ("ftn_bso", ?, ?);`;
msgDb.run(sql, [ areaTag, lastScanId ], err => {
cb(err);
});
};
this.getNodeConfigKeyByAddress = function(uplink) {
// :TODO: sort by least # of '*' & take top?
const nodeKey = _.filter(Object.keys(this.moduleConfig.nodes), addr => {
return Address.fromString(addr).isPatternMatch(uplink);
})[0];
return nodeKey;
};
this.exportMessagesByUuid = function(messageUuids, exportOpts, cb) {
//
// This method has a lot of madness going on:
// - Try to stuff messages into packets until we've hit the target size
// - We need to wait for write streams to finish before proceeding in many cases
// or data will be cut off when closing and creating a new stream
//
let exportedFiles = [];
let currPacketSize = self.moduleConfig.packetTargetByteSize;
let packet;
let ws;
let remainMessageBuf;
let remainMessageId;
const createTempPacket = !_.isString(exportOpts.nodeConfig.archiveType) || 0 === exportOpts.nodeConfig.archiveType.length;
async.each(messageUuids, (msgUuid, nextUuid) => {
let message = new Message();
async.series(
[
function finalizePrevious(callback) {
if(packet && currPacketSize >= self.moduleConfig.packetTargetByteSize) {
packet.writeTerminator(ws);
ws.end();
ws.once('finish', () => {
callback(null);
});
} else {
callback(null);
}
},
function loadMessage(callback) {
message.load( { uuid : msgUuid }, err => {
if(err) {
return callback(err);
}
// General preperation
self.prepareMessage(message, exportOpts);
self.setReplyKludgeFromReplyToMsgId(message, err => {
callback(err);
});
});
},
function createNewPacket(callback) {
if(currPacketSize >= self.moduleConfig.packetTargetByteSize) {
packet = new ftnMailPacket.Packet();
const packetHeader = new ftnMailPacket.PacketHeader(
exportOpts.network.localAddress,
exportOpts.destAddress,
exportOpts.nodeConfig.packetType);
packetHeader.password = exportOpts.nodeConfig.packetPassword || '';
// use current message ID for filename seed
const pktFileName = self.getOutgoingPacketFileName(self.exportTempDir, message.messageId, createTempPacket);
exportedFiles.push(pktFileName);
ws = fs.createWriteStream(pktFileName);
currPacketSize = packet.writeHeader(ws, packetHeader);
if(remainMessageBuf) {
currPacketSize += packet.writeMessageEntry(ws, remainMessageBuf);
remainMessageBuf = null;
}
}
callback(null);
},
function appendMessage(callback) {
const msgBuf = packet.getMessageEntryBuffer(message, exportOpts);
currPacketSize += msgBuf.length;
if(currPacketSize >= self.moduleConfig.packetTargetByteSize) {
remainMessageBuf = msgBuf; // save for next packet
remainMessageId = message.messageId;
} else {
ws.write(msgBuf);
}
callback(null);
},
function storeStateFlags0Meta(callback) {
message.persistMetaValue('System', 'state_flags0', Message.StateFlags0.Exported.toString(), err => {
callback(err);
});
},
function storeMsgIdMeta(callback) {
//
// We want to store some meta as if we had imported
// this message for later reference
//
if(message.meta.FtnKludge.MSGID) {
message.persistMetaValue('FtnKludge', 'MSGID', message.meta.FtnKludge.MSGID, err => {
callback(err);
});
} else {
callback(null);
}
}
],
err => {
nextUuid(err);
}
);
}, err => {
if(err) {
cb(err);
} else {
async.series(
[
function terminateLast(callback) {
if(packet) {
packet.writeTerminator(ws);
ws.end();
ws.once('finish', () => {
callback(null);
});
} else {
callback(null);
}
},
function writeRemainPacket(callback) {
if(remainMessageBuf) {
// :TODO: DRY this with the code above -- they are basically identical
packet = new ftnMailPacket.Packet();
const packetHeader = new ftnMailPacket.PacketHeader(
exportOpts.network.localAddress,
exportOpts.destAddress,
exportOpts.nodeConfig.packetType);
packetHeader.password = exportOpts.nodeConfig.packetPassword || '';
// use current message ID for filename seed
const pktFileName = self.getOutgoingPacketFileName(self.exportTempDir, remainMessageId, createTempPacket);
exportedFiles.push(pktFileName);
ws = fs.createWriteStream(pktFileName);
packet.writeHeader(ws, packetHeader);
ws.write(remainMessageBuf);
packet.writeTerminator(ws);
ws.end();
ws.once('finish', () => {
callback(null);
});
} else {
callback(null);
}
}
],
err => {
cb(err, exportedFiles);
}
);
}
});
};
this.exportMessagesToUplinks = function(messageUuids, areaConfig, cb) {
async.each(areaConfig.uplinks, (uplink, nextUplink) => {
const nodeConfigKey = self.getNodeConfigKeyByAddress(uplink);
if(!nodeConfigKey) {
return nextUplink();
}
const exportOpts = {
nodeConfig : self.moduleConfig.nodes[nodeConfigKey],
network : Config.messageNetworks.ftn.networks[areaConfig.network],
destAddress : Address.fromString(uplink),
networkName : areaConfig.network,
};
if(_.isString(exportOpts.network.localAddress)) {
exportOpts.network.localAddress = Address.fromString(exportOpts.network.localAddress);
}
const outgoingDir = self.getOutgoingPacketDir(exportOpts.networkName, exportOpts.destAddress);
const exportType = self.getExportType(exportOpts.nodeConfig);
async.waterfall(
[
function createOutgoingDir(callback) {
mkdirp(outgoingDir, err => {
callback(err);
});
},
function exportToTempArea(callback) {
self.exportMessagesByUuid(messageUuids, exportOpts, callback);
},
function createArcMailBundle(exportedFileNames, callback) {
if(self.archUtil.haveArchiver(exportOpts.nodeConfig.archiveType)) {
// :TODO: support bundleTargetByteSize:
//
// Compress to a temp location then we'll move it in the next step
//
// Note that we must use the *final* output dir for getOutgoingBundleFileName()
// as it checks for collisions in bundle names!
//
self.getOutgoingBundleFileName(outgoingDir, exportOpts.network.localAddress, exportOpts.destAddress, (err, bundlePath) => {
if(err) {
return callback(err);
}
// adjust back to temp path
const tempBundlePath = paths.join(self.exportTempDir, paths.basename(bundlePath));
self.archUtil.compressTo(
exportOpts.nodeConfig.archiveType,
tempBundlePath,
exportedFileNames, err => {
callback(err, [ tempBundlePath ] );
}
);
});
} else {
callback(null, exportedFileNames);
}
},
function moveFilesToOutgoing(exportedFileNames, callback) {
async.each(exportedFileNames, (oldPath, nextFile) => {
const ext = paths.extname(oldPath);
if('.pk_' === ext) {
//
// For a given temporary .pk_ file, we need to move it to the outoing
// directory with the appropriate BSO style filename.
//
const ext = self.getOutgoingFlowFileExtension(
exportOpts.destAddress,
'mail',
exportType);
const newPath = paths.join(
outgoingDir,
`${paths.basename(oldPath, 'pk_')}${ext}`);
fs.rename(oldPath, newPath, nextFile);
} else {
const newPath = paths.join(outgoingDir, paths.basename(oldPath));
fs.rename(oldPath, newPath, err => {
if(err) {
Log.warn(
{ oldPath : oldPath, newPath : newPath },
'Failed moving temporary bundle file!');
return nextFile();
}
//
// For bundles, we need to append to the appropriate flow file
//
const flowFilePath = self.getOutgoingFlowFileName(
outgoingDir,
exportOpts.destAddress,
'ref',
exportType);
// directive of '^' = delete file after transfer
self.flowFileAppendRefs(flowFilePath, [ newPath ], '^', err => {
if(err) {
Log.warn( { path : flowFilePath }, 'Failed appending flow reference record!');
}
nextFile();
});
});
}
}, callback);
}
],
err => {
// :TODO: do something with |err| ?
nextUplink();
}
);
}, cb); // complete
};
this.setReplyToMsgIdFtnReplyKludge = function(message, cb) {
//
// Given a FTN REPLY kludge, set |message.replyToMsgId|, if possible,
// by looking up an associated MSGID kludge meta.
//
// See also: http://ftsc.org/docs/fts-0009.001
//
if(!_.isString(message.meta.FtnKludge.REPLY)) {
// nothing to do
return cb();
}
Message.getMessageIdsByMetaValue('FtnKludge', 'MSGID', message.meta.FtnKludge.REPLY, (err, msgIds) => {
if(!err) {
assert(1 === msgIds.length);
message.replyToMsgId = msgIds[0];
}
cb();
});
};
this.importNetMailToArea = function(localAreaTag, header, message, cb) {
async.series(
[
function validateDestinationAddress(callback) {
const localNetworkPattern = `${message.meta.FtnProperty.ftn_dest_network}/${message.meta.FtnProperty.ftn_dest_node}`;
const localNetworkName = self.getNetworkNameByAddressPattern(localNetworkPattern);
callback(_.isString(localNetworkName) ? null : new Error('Packet destination is not us'));
},
function basicSetup(callback) {
message.areaTag = localAreaTag;
//
// If duplicates are NOT allowed in the area (the default), we need to update
// the message UUID using data available to us. Duplicate UUIDs are internally
// not allowed in our local database.
//
if(!Config.messageNetworks.ftn.areas[localAreaTag].allowDupes) {
if(self.messageHasValidMSGID(message)) {
// Update UUID with our preferred generation method
message.uuid = ftnUtil.createMessageUuid(
message.meta.FtnKludge.MSGID,
message.meta.FtnProperty.ftn_area);
} else {
// Update UUID with alternate/backup generation method
message.uuid = ftnUtil.createMessageUuidAlternate(
message.meta.FtnProperty.ftn_area,
message.modTimestamp,
message.subject,
message.message);
}
}
callback(null);
},
function setReplyToMessageId(callback) {
self.setReplyToMsgIdFtnReplyKludge(message, () => {
callback(null);
});
},
function persistImport(callback) {
// mark as imported
message.meta.System.StateFlags0 = Message.StateFlags0.Imported.toString();
// save to disc
message.persist(err => {
callback(err);
});
}
],
err => {
cb(err);
}
);
};
//
// Ref. implementations on import:
// * https://github.com/larsks/crashmail/blob/26e5374710c7868dab3d834be14bf4041041aae5/crashmail/pkt.c
// https://github.com/larsks/crashmail/blob/26e5374710c7868dab3d834be14bf4041041aae5/crashmail/handle.c
//
this.importMessagesFromPacketFile = function(packetPath, password, cb) {
let packetHeader;
new ftnMailPacket.Packet().read(packetPath, (entryType, entryData, next) => {
if('header' === entryType) {
packetHeader = entryData;
const localNetworkName = self.getNetworkNameByAddress(packetHeader.destAddress);
if(!_.isString(localNetworkName)) {
next(new Error('No configuration for this packet'));
} else {
// :TODO: password needs validated - need to determine if it will use the same node config (which can have wildcards) or something else?!
next(null);
}
} else if('message' === entryType) {
const message = entryData;
const areaTag = message.meta.FtnProperty.ftn_area;
if(areaTag) {
//
// EchoMail
//
const localAreaTag = self.getLocalAreaTagByFtnAreaTag(areaTag);
if(localAreaTag) {
self.importNetMailToArea(localAreaTag, packetHeader, message, err => {
if(err) {
if('SQLITE_CONSTRAINT' === err.code) {
Log.info(
{ subject : message.subject, uuid : message.uuid },
'Not importing non-unique message');
return next(null);
}
}
next(err);
});
} else {
//
// No local area configured for this import
//
// :TODO: Handle the "catch all" case, if configured
}
} else {
//
// NetMail
//
}
}
}, err => {
cb(err);
});
};
this.importPacketFilesFromDirectory = function(importDir, password, cb) {
async.waterfall(
[
function getPacketFiles(callback) {
fs.readdir(importDir, (err, files) => {
if(err) {
return callback(err);
}
callback(null, files.filter(f => '.pkt' === paths.extname(f)));
});
},
function importPacketFiles(packetFiles, callback) {
let rejects = [];
async.each(packetFiles, (packetFile, nextFile) => {
self.importMessagesFromPacketFile(paths.join(importDir, packetFile), '', err => {
// :TODO: check err -- log / track rejects, etc.
if(err) {
rejects.push(packetFile);
}
nextFile();
});
}, err => {
// :TODO: Handle err! we should try to keep going though...
callback(err, packetFiles, rejects);
});
},
function handleProcessedFiles(packetFiles, rejects, callback) {
async.each(packetFiles, (packetFile, nextFile) => {
const fullPath = paths.join(importDir, packetFile);
if(rejects.indexOf(packetFile) > -1) {
// :TODO: rename to .bad, perhaps move to a rejects dir + log
nextFile();
} else {
fs.unlink(fullPath, err => {
nextFile();
});
}
}, err => {
callback(err);
});
}
],
err => {
cb(err);
}
);
};
this.importMessagesFromDirectory = function(inboundType, importDir, cb) {
async.waterfall(
[
// start with .pkt files
function importPacketFiles(callback) {
self.importPacketFilesFromDirectory(importDir, '', err => {
callback(err);
});
},
function discoverBundles(callback) {
fs.readdir(importDir, (err, files) => {
files = files.filter(f => '.pkt' !== paths.extname(f));
async.map(files, (file, transform) => {
const fullPath = paths.join(importDir, file);
self.archUtil.detectType(fullPath, (err, archName) => {
transform(null, { path : fullPath, archName : archName } );
});
}, (err, bundleFiles) => {
callback(err, bundleFiles);
});
});
},
function importBundles(bundleFiles, callback) {
let rejects = [];
async.each(bundleFiles, (bundleFile, nextFile) => {
if(_.isUndefined(bundleFile.archName)) {
Log.warn(
{ fileName : bundleFile.path },
'Unknown bundle archive type');
rejects.push(bundleFile.path);
return nextFile(); // unknown archive type
}
self.archUtil.extractTo(
bundleFile.path,
self.importTempDir,
bundleFile.archName,
err => {
if(err) {
Log.warn(
{ fileName : bundleFile.path, error : err.toString() },
'Failed to extract bundle');
rejects.push(bundleFile.path);
}
nextFile();
}
);
}, err => {
if(err) {
return callback(err);
}
//
// All extracted - import .pkt's
//
self.importPacketFilesFromDirectory(self.importTempDir, '', err => {
// :TODO: handle |err|
callback(null, bundleFiles, rejects);
});
});
},
function handleProcessedBundleFiles(bundleFiles, rejects, callback) {
async.each(bundleFiles, (bundleFile, nextFile) => {
if(rejects.indexOf(bundleFile.path) > -1) {
// :TODO: rename to .bad, perhaps move to a rejects dir + log
nextFile();
} else {
fs.unlink(bundleFile.path, err => {
nextFile();
});
}
}, err => {
callback(err);
});
}
],
err => {
cb(err);
}
);
};
this.createTempDirectories = function(cb) {
temp.mkdir('enigftnexport-', (err, tempDir) => {
if(err) {
return cb(err);
}
self.exportTempDir = tempDir;
temp.mkdir('enigftnimport-', (err, tempDir) => {
self.importTempDir = tempDir;
cb(err);
});
});
};
// Starts an export block - returns true if we can proceed
this.exportingStart = function() {
if(!this.exportRunning) {
this.exportRunning = true;
return true;
}
return false;
};
// ends an export block
this.exportingEnd = function() {
this.exportRunning = false;
};
}
require('util').inherits(FTNMessageScanTossModule, MessageScanTossModule);
FTNMessageScanTossModule.prototype.startup = function(cb) {
Log.info(`${exports.moduleInfo.name} Scanner/Tosser starting up`);
let importing = false;
let self = this;
function tryImportNow(reasonDesc) {
if(!importing) {
importing = true;
Log.info( { module : exports.moduleInfo.name }, reasonDesc);
self.performImport( () => {
importing = false;
});
}
}
this.createTempDirectories(err => {
if(err) {
Log.warn( { error : err.toStrong() }, 'Failed creating temporary directories!');
return cb(err);
}
if(_.isObject(this.moduleConfig.schedule)) {
const exportSchedule = this.parseScheduleString(this.moduleConfig.schedule.export);
if(exportSchedule) {
if(exportSchedule.sched && this.exportingStart()) {
this.exportTimer = later.setInterval( () => {
Log.info( { module : exports.moduleInfo.name }, 'Performing scheduled message scan/export...');
this.performExport( () => {
this.exportingEnd();
});
}, exportSchedule.sched);
}
if(_.isBoolean(exportSchedule.immediate)) {
this.exportImmediate = exportSchedule.immediate;
}
}
const importSchedule = this.parseScheduleString(this.moduleConfig.schedule.import);
if(importSchedule) {
if(importSchedule.sched) {
this.importTimer = later.setInterval( () => {
tryImportNow('Performing scheduled message import/toss...');
}, importSchedule.sched);
}
if(_.isString(importSchedule.watchFile)) {
gaze(importSchedule.watchFile, (err, watcher) => {
watcher.on('all', (event, watchedPath) => {
if(importSchedule.watchFile === watchedPath) {
tryImportNow(`Performing import/toss due to @watch: ${watchedPath} (${event})`);
}
});
});
}
}
}
FTNMessageScanTossModule.super_.prototype.startup.call(this, cb);
});
};
FTNMessageScanTossModule.prototype.shutdown = function(cb) {
Log.info('FidoNet Scanner/Tosser shutting down');
if(this.exportTimer) {
this.exportTimer.clear();
}
if(this.importTimer) {
this.importTimer.clear();
}
//
// Clean up temp dir/files we created
//
temp.cleanup((err, stats) => {
const fullStats = Object.assign(stats, { exportTemp : this.exportTempDir, importTemp : this.importTempDir } );
if(err) {
Log.warn(fullStats, 'Failed cleaning up temporary directories!');
} else {
Log.trace(fullStats, 'Temporary directories cleaned up');
}
FTNMessageScanTossModule.super_.prototype.shutdown.call(this, cb);
});
};
FTNMessageScanTossModule.prototype.performImport = function(cb) {
if(!this.hasValidConfiguration()) {
return cb(new Error('Missing or invalid configuration'));
}
var self = this;
async.each( [ 'inbound', 'secInbound' ], (inboundType, nextDir) => {
self.importMessagesFromDirectory(inboundType, self.moduleConfig.paths[inboundType], err => {
nextDir();
});
}, cb);
};
FTNMessageScanTossModule.prototype.performExport = function(cb) {
//
// We're only concerned with areas related to FTN. For each area, loop though
// and let's find out what messages need exported.
//
if(!this.hasValidConfiguration()) {
return cb(new Error('Missing or invalid configuration'));
}
//
// Select all messages that have a message_id > our last scan ID.
// Additionally exclude messages that have a ftn_attr_flags FtnProperty meta
// as those came via import!
//
/*
const getNewUuidsSql =
`SELECT message_id, message_uuid
FROM message m
WHERE area_tag = ? AND message_id > ? AND
(SELECT COUNT(message_id)
FROM message_meta
WHERE message_id = m.message_id AND meta_category = 'FtnProperty' AND meta_name = 'ftn_attr_flags') = 0
ORDER BY message_id;`;
*/
//
// Select all messages with a |message_id| > |lastScanId|.
// Additionally exclude messages with the System state_flags0 which will be present for
// imported or already exported messages
//
// NOTE: If StateFlags0 starts to use additional bits, we'll likely need to check them here!
//
const getNewUuidsSql =
`SELECT message_id, message_uuid
FROM message m
WHERE area_tag = ? AND message_id > ? AND
(SELECT COUNT(message_id)
FROM message_meta
WHERE message_id = m.message_id AND meta_category = 'System' AND meta_name = 'state_flags0') = 0
ORDER BY message_id;`;
var self = this;
async.each(Object.keys(Config.messageNetworks.ftn.areas), (areaTag, nextArea) => {
const areaConfig = Config.messageNetworks.ftn.areas[areaTag];
if(!this.isAreaConfigValid(areaConfig)) {
return nextArea();
}
//
// For each message that is newer than that of the last scan
// we need to export to each configured associated uplink(s)
//
async.waterfall(
[
function getLastScanId(callback) {
self.getAreaLastScanId(areaTag, callback);
},
function getNewUuids(lastScanId, callback) {
msgDb.all(getNewUuidsSql, [ areaTag, lastScanId ], (err, rows) => {
if(err) {
callback(err);
} else {
if(0 === rows.length) {
let nothingToDoErr = new Error('Nothing to do!');
nothingToDoErr.noRows = true;
callback(nothingToDoErr);
} else {
callback(null, rows);
}
}
});
},
function exportToConfiguredUplinks(msgRows, callback) {
const uuidsOnly = msgRows.map(r => r.message_uuid); // convert to array of UUIDs only
self.exportMessagesToUplinks(uuidsOnly, areaConfig, err => {
const newLastScanId = msgRows[msgRows.length - 1].message_id;
Log.info(
{ areaTag : areaTag, messagesExported : msgRows.length, newLastScanId : newLastScanId },
'Export complete');
callback(err, newLastScanId);
});
},
function updateLastScanId(newLastScanId, callback) {
self.setAreaLastScanId(areaTag, newLastScanId, callback);
}
],
function complete(err) {
nextArea();
}
);
}, err => {
cb(err);
});
};
FTNMessageScanTossModule.prototype.record = function(message) {
//
// This module works off schedules, but we do support @immediate for export
//
if(true !== this.exportImmediate || !this.hasValidConfiguration()) {
return;
}
if(message.isPrivate()) {
// :TODO: support NetMail
} else if(message.areaTag) {
const areaConfig = Config.messageNetworks.ftn.areas[message.areaTag];
if(!this.isAreaConfigValid(areaConfig)) {
return;
}
if(this.exportingStart()) {
this.exportMessagesToUplinks( [ message.uuid ], areaConfig, err => {
const info = { uuid : message.uuid, subject : message.subject };
if(err) {
Log.warn(info, 'Failed exporting message');
} else {
Log.info(info, 'Message exported');
}
this.exportingEnd();
});
}
}
};