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61 lines
1.7 KiB
61 lines
1.7 KiB
'use strict';
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const config = require(__dirname+'/../../misc/config.js')
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, { createCIDR, parse } = require('ip6addr')
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, hashIp = require(__dirname+'/../../misc/haship.js')
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, ipTypes = require(__dirname+'/iptypes.js')
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, { ObjectId } = require(__dirname+'/../../../db/db.js');
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module.exports = (req, res, next) => {
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//tor user ip uses bypass id (or objectid, which will become bypassid)
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if (res.locals.anonymizer) {
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const pseudoIp = req.signedCookies.bypassid || ObjectId().toString();
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res.locals.pseudoIp = pseudoIp;
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res.locals.ip = {
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raw: `${pseudoIp}.BP`,
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cloak: `${pseudoIp}.BP`,
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type: ipTypes.BYPASS,
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};
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return next();
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}
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//ip for normal user
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const { dontStoreRawIps, ipHeader } = config.get;
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const ip = req.headers[ipHeader] || req.connection.remoteAddress;
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try {
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const ipParsed = parse(ip);
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const ipKind = ipParsed.kind();
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const ipStr = ipParsed.toString({
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format: ipKind === 'ipv4' ? 'v4' : 'v6',
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zeroElide: false,
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zeroPad: false,
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});
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let qrange
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, hrange
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, type;
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if (ipKind === 'ipv4') {
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qrange = createCIDR(ipStr, 24).toString();
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hrange = createCIDR(ipStr, 16).toString();
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type = ipTypes.IPV4;
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} else {
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qrange = createCIDR(ipStr, 64).toString();
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hrange = createCIDR(ipStr, 48).toString();
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type = ipTypes.IPV6;
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}
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const cloak = `${hashIp(hrange).substring(0,8)}.${hashIp(qrange).substring(0,7)}.${hashIp(ipStr).substring(0,7)}.IP${ipKind.charAt(3)}`;
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res.locals.ip = {
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raw: dontStoreRawIps === true ? cloak : ipStr,
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cloak,
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type,
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};
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next();
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} catch(e) {
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console.error('Ip parse failed', e);
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return res.status(400).render('message', {
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'title': 'Bad request',
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'message': 'Malformed IP' //should never get here
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});
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}
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};
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