/// <summary>
/// Scans the network for IP Addresses and MAC Addresses and prints them out
/// </summary>
/// <returns>
/// void
/// </returns>
public static void TCPScan()
{
// run nmap for hostnames
string hstcmd = "nmap -sn 192.168.1.0/24 | awk '/scan report/ {print $5}'";
var hstouput = hstcmd.ExecBash();
// Parse the hostnames out into a list
List <string> hostlist = new List <string>(hstouput.Split('\n'));
// For every entry, If hostname matches masterhost, add the ip
foreach (var hostname in hostlist)
{
if (hostname == masterhost)
{
// Create a List for the ips
List <string> iplist = new List <string>();
// Create a List for the MACs
List <string> maclist = new List <string>();
// Get the ips of the recognized hostnames
string getaddr = "nmap -sL 192.168.1.0/24 | grep " + masterhost + "| awk '{print $6}' | tr -d '()'";
var ipoutput = getaddr.ExecBash();
// Split the outputs and add them to the list
iplist = ipoutput.Split('\n').ToList();
// Remove the last line of the list (because it's always blank)
if (iplist.Any())
{
iplist.RemoveAt(iplist.Count - 1);
}
// For each ip in the list, ping it to get the MAC address then add to the list
foreach (var address in iplist)
{
string getresult = "arping -c 1 " + address + " | grep -o -E \'([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}\'"; // use grep to pull the MAC
var result = getresult.ExecBash();
if (result == "") //if no result, tell that it's not available
{
result = "Unavailable";
}
// format the result to get rid of newline characters
//string cleanresult = Regex.Replace(result, @"\n", "");
maclist.Add(result); // add it to the list
}
// Show entries in the lists together
for (var i = 0; i < iplist.Count; i++)
{
Console.WriteLine("FOUND!");
Console.WriteLine("IP: " + iplist[i] + " MAC: " + maclist[i]); //Show on same line
// Generate a unique ID
Random rnd = new Random();
int length = 5;
var str = "";
for (var j = 0; j < length; j++)
{
str += ((char)(rnd.Next(1, 26) + 64)).ToString();
}
// Sanitize and add the mac address and its unique id to the table.
string mac = maclist[i].Replace("\n", String.Empty);
mac = mac.Replace(":", String.Empty);
// Insert the row unless it is already present, in which case ignore it.
SQLHelper addvals = new SQLHelper("INSERT OR IGNORE INTO units (mac, ip, unit_id) VALUES('" + mac + "','" + iplist[i] + "','" + str + "')");
addvals.Run_Cmd();
}
}
}
}
public static void TcpTownClient()
{
// Fetch ips in a list
Console.WriteLine("Fetching IPs");
SQLHelper getips = new SQLHelper("SELECT ip FROM units");
getips.Run_Cmd();
getips.SetIPs();
// Fetch unit ids in a list
Console.WriteLine("Fetching IDs");
SQLHelper getids = new SQLHelper("SELECT unit_id FROM units");
getids.Run_Cmd();
getids.SetIDs();
// Make a new list for the ips and ids
List <string> iplist = getips.Get_List();
List <string> idlist = getids.Get_List();
// Now go through down each ip and id in the lists and request the data
foreach (var address in iplist)
{
foreach (var id in idlist)
{
// if the id is not our city identifier, proceed with asking for levels
if (id.ToString() != cityID) // !potential logic error != continues code, == skips... no idea why?
{
//debugging
//var checkme = id;
// Tell who we are connecting to
Console.WriteLine("Connecting to Unit" + id + "...");
// Create a new TCP Client with the address and default port number
var client = new TcpClient(address, portNum);
// Establish a network Stream
NetworkStream ns = client.GetStream();
// Setup a byte array
byte[] bytes = new byte[1024];
// Read the bytes from the network stream into the array
int bytesRead = ns.Read(bytes, 0, bytes.Length);
// Format to string
string received = Encoding.ASCII.GetString(bytes, 0, bytesRead);
// Turn the input levels to an array
string[] levels = received.Split(',');
// Turn each level into a double
double wat = Convert.ToDouble(levels[0]);
double sew = Convert.ToDouble(levels[1]);
double pow = Convert.ToDouble(levels[2]);
// Generate a timestamp
Int32 unixTimestamp = (Int32)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
// Insert values with associated unit id into Database
SQLHelper insertcmd = new SQLHelper("INSERT INTO status VALUES(" + unixTimestamp + "," + "'" + id + "'," + wat + "," + sew + "," + pow + ")");
insertcmd.Run_Cmd();
// Report levels
Console.WriteLine("Unit " + id + " reports " + wat + " water, " + sew + " sewage, " + pow + " power");
}
// if we are dealing with a city, we need to send the acknowledgement message - sp spin up a server
else
{
// echo we're ignoring
Console.WriteLine("Skipping City...");
}
}
}
}
public static void FindCity()
{
// Set ACK message
string ackmsg = "CCNCS";
// Fetch ips in a list
SQLHelper getips = new SQLHelper("SELECT ip FROM units");
getips.Run_Cmd();
getips.SetIPs();
// Fetch unit ids in a list
SQLHelper getids = new SQLHelper("SELECT unit_id FROM units");
getids.Run_Cmd();
getids.SetIDs();
// Make a new list for the ips and ids
List <string> iplist = getips.Get_List();
List <string> idlist = getids.Get_List();
// Now go through down each ip and id in the lists and request the data
foreach (var address in iplist)
{
foreach (var id in idlist)
{
// Create a new TCP Client with the address and default port number
var client = new TcpClient(address, portNum);
// Establish a network Stream
NetworkStream ns = client.GetStream();
// Setup a byte array
byte[] incoming_msg = new byte[1024];
// Read the bytes from the network stream into the array
int bytesRead = ns.Read(incoming_msg, 0, incoming_msg.Length);
// Format to string
string received = Encoding.ASCII.GetString(incoming_msg, 0, bytesRead);
// if the message that is received is our defined acknowledement message, we have the town control.
if (received == ackmsg)
{
//Change the unit_ID to CCNCS
SQLHelper changeID = new SQLHelper("UPDATE units SET unit_id='CCNCS' WHERE ip= '" + address + "'");
changeID.Run_Cmd();
// Then send the city ACK message
byte[] outgoing_msg = new byte[1024];
// populate the byte array with our acknowledgement message
byte[] byte_cityack = Encoding.ASCII.GetBytes(townackmsg);
// try to write the acknowledgement message
try
{
ns.Write(byte_cityack, 0, byte_cityack.Length);
ns.Close();
client.Close();
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
}
}
}
static void Main(string[] args)
{
#region Command Arguments
// Check for user input
for (int i = 0; i < args.Length; i++)
{
if (args[i] == "--set-unit")
{
ContextSwitch.SetAsUnit();
}
if (args[i] == "--set-town")
{
ContextSwitch.SetAsTown();
}
if (args[i] == "--set-city")
{
ContextSwitch.SetAsCity();
}
if (args[i] == "--get-mode")
{
Console.WriteLine(ContextSwitch.GetMode());
}
if (args[i] == "--tcpscan")
{
NetworkRW.TCPScan();
}
if (args[i] == "--gendb")
{
SQLHelper.CreateDB();
}
if (args[i] == "--refresh-city")
{
NetworkRW.FindCity();
}
if (args[i] == "--send-errors")
{
NetworkRW.SendError();
}
}
#endregion
#region DeviceDefaults
// If mode is not already set, then set it by default to unit mode
if (!File.Exists("mode"))
{
ContextSwitch.SetAsDefault();
}
// Create our dummy files
if (!File.Exists("water") || !File.Exists("sewage") || !File.Exists("power"))
{
RetrieveData.CreateFiles();
}
// Create a setupstat file
if (!File.Exists("setupstat"))
{
ContextSwitch.CreateSetup();
}
#endregion
#region ModeDependants
if (ContextSwitch.GetMode() == 0) // if unit
{
// We await a connection from the Town Control
// by using the TCP Unit Server in Network Read/Write
Console.WriteLine("Unit Mode Detected!");
ContextSwitch.FinishSetup(); // Setup can be set to finished
NetworkRW.TcpUnitServer();
}
if (ContextSwitch.GetMode() == 1) // if town
{
Console.WriteLine("Town Mode Detected!");
string stat = ContextSwitch.GetSetup();
// if the database doesn't exist, generate it and populate it
if (stat == "pending")
{
Console.WriteLine("Generating Database...");
SQLHelper.CreateDB(); // create the database
Console.WriteLine("Scanning Network...");
NetworkRW.TCPScan(); // populate the database
Console.WriteLine("Detecting City...");
NetworkRW.FindCity(); // find the city
ContextSwitch.FinishSetup(); // finish the setup
}
// Check setup again
stat = ContextSwitch.GetSetup();
if (stat == "done")
{
// Initiate the TCP town client
Console.WriteLine("Starting town client...");
NetworkRW.TcpTownClient();
// When finished, echo the errors to city
Console.WriteLine("Sending any errors to city control...");
System.Threading.Thread.Sleep(5000); // pause briefly before continuing
NetworkRW.SendError();
Console.WriteLine("Successfully sent errors");
}
}
if (ContextSwitch.GetMode() == 2) // if city
{
Console.WriteLine("City Mode Detected!");
string stat = ContextSwitch.GetSetup();
// if the database doesn't exist yet generate it, but do not populate it.
if (stat == "pending")
{
Console.WriteLine("Initializating setup:");
Console.WriteLine("Generating Database...");
SQLHelper.CreateDB(); // create the database
NetworkRW.CitySetup(); // run the city setup
}
//check setup again
stat = ContextSwitch.GetSetup();
if (stat == "done")
{
// just run the city server
NetworkRW.CityServer();
}
}
#endregion
}
