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diagnostics.js
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diagnostics.js
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/*
This code is held in a joint copyright between Nate Watson and Oluwafunmiwo Juda Sholola, 2015. It is released under the MIT license.
*/
var os = require("os");
var dns = require("native-dns");
var http = require("http");
var https = require("https");
var ping = require("ping");
var speedconcat = require("speedconcat");
var diagnostics = {};
var testURL = "google.com";
diagnostics.getTestURL = function(){ return testURL; };
diagnostics.setTestURL = function(replacement) {
testURL = replacement;
return;
};
diagnostics.checkInterfaces = function() {
var errors = [];
var outside = false;
var v4 = false;
var v6 = false;
var interfaces = os.networkInterfaces();
for (var interfaceSet in interfaces) {
for (var interface in interfaces[interfaceSet]) {
if (interfaces[interfaceSet][interface].internal == false) {
outside = true;
if (interfaces[interfaceSet][interface].family == "IPv4") {
v4 = true;
}
if (interfaces[interfaceSet][interface].family == "IPv6") {
v6 = true;
}
}
}
}
if (outside != true) {
errors[errors.length] = 1;
}
if (v4 != true) {
errors[errors.length] = 4;
}
if (v6 != true) {
errors[errors.length] = 6;
}
return errors;
};
diagnostics.haveIPv4 = function(){
var errors = diagnostics.checkInterfaces();
if(errors.indexOf(4) > -1) {
return false;
}
return true;
};
diagnostics.haveIPv6 = function(){
var errors = diagnostics.checkInterfaces();
if(errors.indexOf(6) > -1) {
return false;
}
return true;
};
diagnostics.haveConnection = function(){
var errors = diagnostics.checkInterfaces();
if(errors.indexOf(1) > -1) {
return false;
}
return true;
};
diagnostics.haveConnectionAsync = function(callback) {
callback((diagnostics.haveIPv4() == true) || (diagnostics.haveIPv6() == true));
return;
};
diagnostics.haveIPv4Async = function(callback) {
callback((diagnostics.haveIPv4() == true));
return;
};
diagnostics.haveIPv6Async = function(callback) {
callback((diagnostics.haveIPv6() == true));
return;
};
diagnostics.haveDNS = function(callback) {
var checkIPv4DNS = function(){
var workingConcatenator = new speedconcat.newConcatenator("");
var dns4Connection = dns.Request({
question: dns.Question({
name: testURL
}),
server: {
address: '8.8.8.8'
}
});
var deactivate4 = false;
dns4Connection.on("timeout", function(){
if (!deactivate4) {
deactivate4 = true;
callback(false);
return;
}
});
dns4Connection.on("message", function(DNSerr, section){
if (DNSerr) {
if (!deactivate4) {
deactivate4 = true;
callback(false);
}
return;
}
workingConcatenator.append(section);
});
dns4Connection.on("end", function(){
if (!deactivate4) {
deactivate4 = true;
callback(true);
}
});
dns4Connection.send();
};
var DNSsegments = "";
var deactivate6 = false;
var dnsConnection = dns.Request({
question: dns.Question({
name: testURL
}),
server: {
address: '2001:4860:4860::8888'
}
});
dnsConnection.on("timeout", function(){
if (!deactivate6) {
deactivate6 = true;
checkIPv4DNS();
}
});
dnsConnection.on("message", function(DNSerr, section){
if (DNSerr) {
if (!deactivate6) {
deactivate6 = true;
checkIPv4DNS();
}
return;
}
DNSsegments += section;
});
dnsConnection.on("end", function(){
if (!deactivate6) {
deactivate6 = true;
callback(true);
}
return;
});
dnsConnection.send();
return;
};
diagnostics.haveHTTP = function(callback) {
var isFired = false;
var requestOptions = {
hostname: testURL,
port: 80,
method: "GET"
};
var httpRequest = http.request(requestOptions, function(response){
var responseTotal = "";
response.on("data", function(section){
responseTotal += section;
});
response.on("end", function(){
if (isFired == false) {
isFired = true;
callback(true);
}
});
response.on("error", function(){
if (isFired == false) {
isFired = true;
callback(false);
}
});
});
httpRequest.on("socket", function (socket){
socket.setTimeout(10000);
socket.on("timeout", function(){
if (isFired == false) {
isFired = true;
callback(false);
}
});
});
httpRequest.on("error", function(failure) {
if (isFired == false) {
isFired = true;
callback(false);
}
});
httpRequest.end();
return;
};
diagnostics.haveHTTPS = function(callback) {
var isFired = false;
var requestOptions = {
hostname: testURL,
port: 443,
method: "GET"
};
var httpRequest = https.request(requestOptions, function(response){
var responseTotal = "";
response.on("data", function(section){
responseTotal += section;
});
response.on("end", function(){
if (isFired == false) {
isFired = true;
callback(true);
}
});
response.on("error", function(){
if (isFired == false) {
isFired = true;
callback(false);
}
});
});
httpRequest.on("socket", function (socket){
socket.setTimeout(10000);
socket.on("timeout", function(){
if (isFired == false) {
isFired = true;
callback(false);
}
});
});
httpRequest.on("error", function(failure) {
if (isFired == false) {
isFired = true;
callback(false);
}
});
httpRequest.end();
return;
};
diagnostics.havePing = function(callback) {
ping.sys.probe(testURL, function(reached) {
callback(reached);
});
};
diagnostics.getError = function(id) {
switch(id) {
case 0: return "NormalNetworkActivity";
case 1: return "NoConnection";
case 4: return "NoIPv4Connection";
case 6: return "NoIPv6Connection";
case 7: return "DiagnosticsScriptFailure";
case 8: return "PingNotUsable";
case 53: return "NoDNS";
case 80: return "NoHTTPconnection";
case 110: return "NoInsecurePOP3";
case 123: return "NoNTP";
case 143: return "NoInsecureIMAP";
case 443: return "NoHTTPSconnection";
case 993: return "NoSecureIMAP";
case 995: return "NoSecurePOP3";
default: return "Unknown";
/*
case 20: return "FTPFailure";
case 22: return "SSHfailure";
case 23: return "TelnetFailure";
case 25: return "SMTPfailure";
case 37: return "TimeProtocolFailure";
case 70: return "NoGopher" ;
case 81: return "NoTor";
case 88: return "NoKerberos" ;
case 161: return "NoSNMP";
case 194: return "NoIRC" ;
case 5222: return "NoXMPP" ;
*/
}
}; /*You could use a tree for this, but that would be work.*/
diagnostics.diagnose = function(callback) {
var errors = diagnostics.checkInterfaces();
var finalSteps = function(errorSet) {
if (errorSet.length < 1) {
errorSet[0] = 0;
}
callback(errorSet);
};
var checkHTTPS = function(errorSet){
diagnostics.haveHTTPS(function(httpWorking){
if (httpWorking == false) {
errorSet[errorSet.length] = 443;
}
finalSteps(errorSet);
return;
});
return;
};
var checkHTTP = function(errorSet){
diagnostics.haveHTTP(function(httpWorking){
if (httpWorking == false) {
errorSet[errorSet.length] = 80;
}
checkHTTPS(errorSet);
return;
});
return;
};
var checkPing = function(errorSet) {
diagnostics.havePing(function(pingWorking){
if (pingWorking == false) {
errorSet[errorSet.length] = 8;
}
checkHTTP(errorSet);
});
};
diagnostics.haveDNS(function(haveDNS){
if (haveDNS == false) {
errors[errors.length] = 53;
}
checkPing(errors);
});
};
var email = require("./emailTester.js");
diagnostics.haveInsecureImap = email.insecureImapWorks;
diagnostics.haveSecureImap = email.secureImapWorks;
diagnostics.haveInsecurePop = email.insecurePopTest;
diagnostics.haveSecurePop = email.securePopTest;
var times = require("./times.js");
diagnostics.haveNTP = times.ntpTester;
module.exports = exports = diagnostics;