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server.js
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server.js
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/**
* Created by smorzhov on 07.04.16.
*/
var http = require('http');
var url = require('url');
var static = require('node-static');
var preFirewall = require('./preFirewall');
var firewallRule = require('./firewallRule');
var aclRule = require('./aclRule');
var floodlight = require('./floodlight');
var firewallAnomaliesResolver = preFirewall.preFirewall.createAnomaliesResolver();
var aclAnomaliesResolver = preFirewall.preFirewall.createAnomaliesResolver();
var fileServer = new static.Server('.');
function postRule(req, res, type) {
req.setEncoding('utf8');
var str = '';
req.on('data', function (chunk) {
str += chunk;
}).on('end', function () {
var rule;
try {
rule = JSON.parse(str);
} catch (err) {
console.log(err + ". JSON.parse(str) crashed!\n");
res.end("Incorrect JSON!\n");
return;
}
switch (type) {
case 'firewall':
if (!firewallRule.isValid(rule)) {
res.end("Incorrect rule!\n");
return;
}
break;
case 'acl':
if (!aclRule.isValidrule(rule)) {
res.end("Incorrect rule!\n");
return;
}
break;
}
var fRule, conflicts;
switch (type) {
case 'firewall':
fRule = preFirewall.createFirewallRule(rule);
conflicts = firewallAnomaliesResolver.findAnomalies(fRule);
break;
case 'acl':
fRule = preFirewall.createACLRule(rule);
conflicts = aclAnomaliesResolver.findAnomalies(fRule);
break;
}
var reply = {status: "", 'rule-id': ""};
var mustBeAdded = false;
var deletedRules = 0;
for (var i = 0; i < conflicts.length; i++) {
if (conflicts[i].type == 0) {
reply['status'] = "Conflicts detected! The rule was not added.";
reply['rule-id'] = JSON.stringify(conflicts[i]) + "\n";
} else {
var id = {"ruleid": conflicts[i]['rule-id']};
switch (type) {
case 'firewall':
console.log(id);
floodlight.removeRuleFromFloodlight(res, floodlight.firewallUrl, id, true,
function () {
floodlight.removeRuleFromFloodlight(res, floodlight.firewallUrl, id, false);
});
mustBeAdded = true;
deletedRules++;
break;
case 'acl':
floodlight.removeRuleFromFloodlight(res, floodlight.aclUrl, id, true, function () {
floodlight.removeRuleFromFloodlight(res, floodlight.aclUrl, id,false);
});
mustBeAdded = true;
deletedRules++;
break;
}
}
}
if (conflicts.length == 0 || mustBeAdded) {
switch (type) {
case 'firewall':
floodlight.sendRule(res, floodlight.firewallUrl, firewallAnomaliesResolver, rule,
fRule, deletedRules, true, function () {
floodlight.sendRule(res, floodlight.firewallUrl, firewallAnomaliesResolver, rule,
fRule, deletedRules, false)
});
return;
case 'acl':
floodlight.sendRule(floodlight.aclUrl, aclAnomaliesResolver, rule, fRule, deletedRules,
true, function () {
floodlight.sendRule(floodlight.aclUrl, aclAnomaliesResolver, rule, fRule, deletedRules, false);
});
return;
}
}
res.end(JSON.stringify(reply));
})
}
function deleteRule(req, res, type) {
req.setEncoding('utf8');
var str = '';
req.on('data', function (chunk) {
str += chunk;
}).on('end', function () {
var id;
try {
id = JSON.parse(str);
} catch (err) {
console.log(err);
res.end("Incorrect JSON!\n");
return;
}
switch (type) {
case 'firewall':
floodlight.removeRule(res, floodlight.firewallUrl, firewallAnomaliesResolver, id, true,
function () {
floodlight.removeRule(res, floodlight.firewallUrl, firewallAnomaliesResolver, id, false);
});
return;
case 'acl':
floodlight.removeRule(res, floodlight.aclUrl, aclAnomaliesResolver, id, true,
function () {
floodlight.removeRule(res, floodlight.aclUrl, aclAnomaliesResolver, id, false);
});
return;
}
})
}
function getRules(res, type) {
var rules;
switch (type) {
case 'firewall':
rules = firewallAnomaliesResolver.getRules();
break;
case 'acl':
rules = aclAnomaliesResolver.getRules();
break;
}
if (rules.length == 0) {
res.end("No rules\n");
return;
}
res.end(JSON.stringify(rules));
/*var reply = "";
for (var i = 0; i < rules.length; i++) {
reply += rules[i].toString() + '\n';
}
res.end(reply);*/
}
function accept(req, res) {
var urlParsed = url.parse(req.url, true);
switch (urlParsed.pathname) {
case '/wm/firewall/rules/json':
if (req.method == 'POST') {
postRule(req, res, 'firewall');
}
if (req.method == 'DELETE') {
deleteRule(req, res, 'firewall');
}
if (req.method == 'GET') {
getRules(res, 'firewall');
}
break;
case '/wm/acl/rules/json':
if (req.method == 'POST') {
postRule(req, res, 'acl');
}
if (req.method == 'DELETE') {
deleteRule(req, res, 'acl');
}
if (req.method == 'GET') {
getRules(res, 'acl');
}
break;
default:
res.statusCode = 404;
res.end("Not found");
fileServer.serve(req, res);
}
}
if (!module.parent) {
http.createServer(accept).listen(8090);
console.log("Сервер запущен на порту 8090");
} else {
exports.accept = accept;
}