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ipscan.js
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ipscan.js
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var ip;
var start_ip = [];
var end_ip = [];
var port;
var ws;
var start_time;
var current_ip = [];
var closed_port_max = 2000;
var ns_hosts_up = [];
var private_ip = '';
var public_ip = '';
var ip_scan_start = 0;
var ip_scan_end = 255;
var default_port_check = [80, 443, 8080];
var blocked_ports = [0, 1, 7, 9, 11, 13, 15, 17, 19, 20, 21, 22, 23, 25, 37, 42,
43, 53, 77, 79, 87, 95, 101, 102, 103, 104, 109, 110, 111, 113, 115,
117, 119, 123, 135, 139, 143, 179, 389, 465, 512, 513, 514, 515, 526,
530, 531, 532, 540, 556, 563, 587, 601, 636, 993, 995, 2049, 4045, 6000
];
//1. get the local ip
//2. split the ip addr
//3. start scan from gateway till 255.
//4. check if other gateway also present
function getIPs(callback) {
var ip_dups = {};
var RTCPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection ||
window.webkitRTCPeerConnection;
var useWebKit = !!window.webkitRTCPeerConnection;
if (!RTCPeerConnection) {
var win = iframe.contentWindow;
RTCPeerConnection = win.RTCPeerConnection || win.mozRTCPeerConnection ||
win.webkitRTCPeerConnection;
useWebKit = !!win.webkitRTCPeerConnection;
}
var mediaConstraints = {
optional: [{
RtpDataChannels: true
}]
};
var servers = undefined;
if (useWebKit) {
servers = {
iceServers: [{
urls: "stun:stun.services.mozilla.com"
}]
};
}
var pc = new RTCPeerConnection(servers, mediaConstraints);
function handleCandidate(candidate) {
var ip_regex = /([0-9]{1,3}(\.[0-9]{1,3}){3})/;
var ip_addr = ip_regex.exec(candidate)[1];
if (ip_dups[ip_addr] === undefined)
callback(ip_addr);
ip_dups[ip_addr] = true;
}
pc.onicecandidate = function(ice) {
console.log(ice);
if (ice.candidate)
handleCandidate(ice.candidate.candidate);
};
pc.createDataChannel("");
pc.createOffer(function(result) {
pc.setLocalDescription(result, function() {
}, function() {
});
}, function() {
});
setTimeout(function() {
var lines = pc.localDescription.sdp.split('\n');
lines.forEach(function(line) {
if (line.indexOf('a=candidate:') === 0)
handleCandidate(line);
});
}, 1000);
}
getIPs(function(ip) {
var li = document.createElement("li");
li.textContent = ip;
//local IPs
if (ip.match(
/^(192\.168\.|169\.254\.|10\.|172\.(1[6-9]|2\d|3[01]))/)) {
private_ip = ip;
current_ip = ip.split(".");
startScan();
document.getElementById("private_ip").appendChild(li);
//assume the rest are public IPs
} else {
public_ip = ip;
current_ip = ip.split(".");
document.getElementById("public_ip").appendChild(li);
}
});
function startScan() {
start_ip = JSON.parse(JSON.stringify(current_ip));
start_ip[3] = ip_scan_start;
end_ip = JSON.parse(JSON.stringify(current_ip));
end_ip[3] = ip_scan_end;
current_ip = start_ip;
port = 80;
setTimeout("network_scan()", 1);
}
function network_scan() {
if (check_init_ip()) {
return;
}
start_time = (new Date).getTime();
try {
ws = new WebSocket("ws://" + current_ip.join(".") + ":" + port);
setTimeout("check_ping_status()", 200);
} catch (err) {
console.log(err);
return;
}
}
function copy_ip(source) {
var dest = [];
for (var i = 0; i < source.length; i++) {
dest[i] = source[i];
}
return dest;
}
function check_ping_status() {
var interval = (new Date).getTime() - start_time;
if (ws.readyState === 0) {
if (interval > closed_port_max) {
var li = document.createElement("li");
li.textContent = current_ip.join(".") + " , ";
try {
ws.close();
} catch (err) {
}
document.getElementById("dead_private_ip").appendChild(li);
setTimeout("network_scan()", 1);
} else {
setTimeout("check_ping_status()", 200);
}
} else {
var li = document.createElement("li");
li.textContent = current_ip.join(".") + " , ";
try {
ws.close();
} catch (err) {
}
document.getElementById("live_private_ip").appendChild(li);
ns_hosts_up.push(current_ip.join("."));
setTimeout("network_scan()", 1);
}
}
function end_scan() {
current_ip[3] = ip_scan_end;
}
function check_init_ip() {
if (current_ip[3] === ip_scan_end) {
log_result();
return true;
} else {
current_ip = increment_ip(current_ip);
}
return false;
}
function increment_ip(inc_ip) {
if (inc_ip[3] < 255) {
inc_ip[3]++;
}
return inc_ip;
}
function log_result() {
console.log(ns_hosts_up);
}