static void AddHostsItem(NetAddress address, HostAliases aliases, string comment)
{
if (aliases.Count == 0)
{
throw new HostNotSpecifiedException();
}
// Remove duplicates
foreach (HostName host in aliases)
{
var lines = Hosts.FindAll(item => item.Valid && item.IP.Type == address.Type && item.Aliases.Contains(host));
foreach (var line in lines)
{
if (line.Aliases.Count == 1)
{
Hosts.Remove(line);
Console.WriteLine("[REMOVED] {0} {1}", line.IP.ToString(), line.Aliases.ToString());
}
else
{
line.Aliases.Remove(host);
Console.WriteLine("[UPDATED] {0} {1}", line.IP.ToString(), line.Aliases.ToString());
}
}
}
// New host
var new_item = new HostsItem(address, aliases, comment == null ? "" : comment.Trim());
Hosts.Add(new_item);
Console.WriteLine("[ADDED] {0} {1}", new_item.IP.ToString(), new_item.Aliases.ToString());
}
static void Run(string[] args, bool interactive)
{
try
{
ArgsQueue = new Queue <string>(args);
string Mode = (ArgsQueue.Count > 0) ? ArgsQueue.Dequeue().ToLower() : "help";
string HostsFile = GetHostsFileName();
string BackupHostsFile = HostsFile + ".backup";
string RollbackHostsFile = HostsFile + ".rollback";
// Check permissions
FileIOPermission HostsPermissions = new FileIOPermission(FileIOPermissionAccess.AllAccess, HostsFile);
if (!SecurityManager.IsGranted(HostsPermissions))
{
throw new Exception("No write permission to the hosts file");
}
// Create default hosts file if not exists
if (!File.Exists(HostsFile))
{
File.WriteAllText(HostsFile, new HostsItem("127.0.0.1", "localhost").ToString());
}
switch (Mode)
{
case "open":
if (IsUnix)
{
break;
}
var exe = FileAssoc.GetExecutable(".txt") ?? "notepad";
Process.Start(exe, '"' + HostsFile + '"');
return;
case "backup":
if (ArgsQueue.Count > 0)
{
BackupHostsFile = HostsFile + "." + ArgsQueue.Dequeue().ToLower();
}
File.Copy(HostsFile, BackupHostsFile, true);
Console.WriteLine("[OK] Hosts file backed up successfully");
return;
case "restore":
if (ArgsQueue.Count > 0)
{
BackupHostsFile = HostsFile + "." + ArgsQueue.Dequeue().ToLower();
}
if (!File.Exists(BackupHostsFile))
{
throw new Exception("Backup file is not exists");
}
File.Copy(HostsFile, RollbackHostsFile, true);
File.Copy(BackupHostsFile, HostsFile, true);
Console.WriteLine("[OK] Hosts file restored successfully");
return;
case "rollback":
if (!File.Exists(RollbackHostsFile))
{
throw new Exception("Rollback file is not exists");
}
if (File.Exists(HostsFile))
{
File.Delete(HostsFile);
}
File.Move(RollbackHostsFile, HostsFile);
Console.WriteLine("[OK] Hosts file rolled back successfully");
return;
case "empty":
case "recreate":
File.Copy(HostsFile, RollbackHostsFile, true);
File.WriteAllText(HostsFile, new HostsItem("127.0.0.1", "localhost").ToString());
Console.WriteLine("[OK] New hosts file created successfully");
return;
case "help":
Help(interactive);
return;
}
// Try to create backup on first run
if (!File.Exists(BackupHostsFile))
{
try
{
File.Copy(HostsFile, BackupHostsFile);
}
catch {}
}
Hosts = new HostsEditor(HostsFile);
Hosts.Load();
List <HostsItem> Lines;
switch (Mode)
{
case "print":
case "raw":
case "file":
Console.WriteLine(File.ReadAllText(Hosts.FileName, Hosts.Encoding));
return;
case "list":
case "view":
case "select":
case "ls":
RunListMode(interactive);
return;
case "format":
Hosts.ResetFormat();
Console.WriteLine("[OK] Hosts file formatted successfully");
break;
case "clean":
Hosts.RemoveInvalid();
Hosts.ResetFormat();
Console.WriteLine("[OK] Hosts file cleaned successfully");
break;
case "add":
case "new":
RunAddMode();
break;
case "set":
RunUpdateMode(true);
break;
case "change":
case "update":
case "upd":
RunUpdateMode(false);
break;
case "rem":
case "rm":
case "remove":
case "del":
case "delete":
if (ArgsQueue.Count == 0)
{
throw new HostNotSpecifiedException();
}
Lines = Hosts.GetMatched(args[1]);
if (Lines.Count == 0)
{
throw new HostNotFoundException(args[1]);
}
foreach (HostsItem Line in Lines)
{
Hosts.Remove(Line);
Console.WriteLine("[REMOVED] {0} {1}", Line.IP.ToString(), Line.Aliases.ToString());
}
break;
case "on":
case "enable":
if (ArgsQueue.Count == 0)
{
throw new HostNotSpecifiedException();
}
Lines = Hosts.GetMatched(args[1]);
if (Lines.Count == 0)
{
throw new HostNotFoundException(args[1]);
}
foreach (HostsItem Line in Lines)
{
Line.Enabled = true;
Console.WriteLine("[ENABLED] {0} {1}", Line.IP.ToString(), Line.Aliases.ToString());
}
break;
case "off":
case "disable":
if (ArgsQueue.Count == 0)
{
throw new HostNotSpecifiedException();
}
Lines = Hosts.GetMatched(args[1]);
if (Lines.Count == 0)
{
throw new HostNotFoundException(args[1]);
}
foreach (HostsItem Line in Lines)
{
Line.Enabled = false;
Console.WriteLine("[DISABLED] {0} {1}", Line.IP.ToString(), Line.Aliases.ToString());
}
break;
case "hide":
if (ArgsQueue.Count == 0)
{
throw new HostNotSpecifiedException();
}
Lines = Hosts.GetMatched(args[1]);
if (Lines.Count == 0)
{
throw new HostNotFoundException(args[1]);
}
foreach (HostsItem Line in Lines)
{
Line.Hidden = true;
Console.WriteLine("[HIDDEN] {0} {1}", Line.IP.ToString(), Line.Aliases.ToString());
}
break;
case "show":
if (ArgsQueue.Count == 0)
{
throw new HostNotSpecifiedException();
}
Lines = Hosts.GetMatched(args[1]);
if (Lines.Count == 0)
{
throw new HostNotFoundException(args[1]);
}
foreach (HostsItem Line in Lines)
{
Line.Hidden = false;
Console.WriteLine("[SHOWN] {0} {1}", Line.IP.ToString(), Line.Aliases.ToString());
}
break;
default:
Console.WriteLine("[ERROR] Unknown command");
Help(interactive);
return;
}
File.Copy(HostsFile, RollbackHostsFile, true);
Hosts.Save();
}
catch (HostNotSpecifiedException)
{
Console.WriteLine("[ERROR] Host not specified");
}
catch (HostNotFoundException e)
{
Console.WriteLine("[ERROR] Host '{0}' not found", e.Host);
}
catch (Exception e)
{
#if DEBUG
Console.WriteLine("[ERROR] " + e.ToString());
#else
Console.WriteLine("[ERROR] " + e.Message);
#endif
}
}
static void Run(List <string> args, bool interactive)
{
try
{
var args_queue = new Queue <string>(args);
var mode = (args_queue.Count > 0) ? args_queue.Dequeue().ToLower() : "help";
var hosts_file = Hosts.FileName;
var backup_file = hosts_file + ".backup";
var rollback_file = hosts_file + ".rollback";
switch (mode)
{
case "open":
if (IsUnix)
{
break;
}
var exe = FileAssoc.GetExecutable(".txt") ?? "notepad";
Process.Start(exe, '"' + hosts_file + '"');
return;
case "apply":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
if (args_queue.Count == 0)
{
throw new Exception("Applied file is not specified");
}
var apply_file = args_queue.Dequeue();
if (!File.Exists(apply_file))
{
throw new Exception("Applied file does not exist");
}
ForceCopy(hosts_file, rollback_file);
ForceCopy(apply_file, hosts_file);
Console.WriteLine("[OK] New hosts file applied successfully");
return;
case "backup":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
if (args_queue.Count > 0)
{
backup_file = hosts_file + "." + args_queue.Dequeue().ToLower();
}
ForceCopy(hosts_file, backup_file);
Console.WriteLine("[OK] Hosts file backed up successfully");
return;
case "restore":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
if (args_queue.Count > 0)
{
backup_file = hosts_file + "." + args_queue.Dequeue().ToLower();
}
if (!File.Exists(backup_file))
{
throw new Exception("Backup file does not exist");
}
ForceCopy(hosts_file, rollback_file);
ForceCopy(backup_file, hosts_file);
Console.WriteLine("[OK] Hosts file restored successfully");
return;
case "rollback":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
if (!File.Exists(rollback_file))
{
throw new Exception("Rollback file does not exist");
}
if (File.Exists(hosts_file))
{
File.Delete(hosts_file);
}
File.Move(rollback_file, hosts_file);
Console.WriteLine("[OK] Hosts file rolled back successfully");
return;
case "empty":
case "recreate":
case "erase":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
ForceCopy(hosts_file, rollback_file);
File.WriteAllText(hosts_file, new HostsItem("127.0.0.1", "localhost").ToString());
Console.WriteLine("[OK] New hosts file created successfully");
return;
case "help":
Help(interactive);
return;
}
Hosts.Load();
List <HostsItem> Lines;
switch (mode)
{
case "print":
case "raw":
case "file":
Console.WriteLine(File.ReadAllText(Hosts.FileName, Hosts.Encoding));
return;
case "list":
case "view":
case "select":
case "ls":
RunListMode(args_queue.ToList(), interactive);
return;
case "format":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
Hosts.ResetFormat();
Console.WriteLine("[OK] Hosts file formatted successfully");
break;
case "clean":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
Hosts.RemoveInvalid();
Hosts.ResetFormat();
Console.WriteLine("[OK] Hosts file cleaned successfully");
break;
case "add":
case "new":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
RunAddMode(args_queue.ToList());
break;
case "set":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
RunUpdateMode(args_queue.ToList(), true);
break;
case "change":
case "update":
case "upd":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
RunUpdateMode(args_queue.ToList(), false);
break;
case "rem":
case "rm":
case "remove":
case "del":
case "delete":
case "unset":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
if (args_queue.Count == 0)
{
throw new HostNotSpecifiedException();
}
Lines = Hosts.GetMatched(args[1]);
if (Lines.Count == 0)
{
throw new HostNotFoundException(args[1]);
}
foreach (HostsItem Line in Lines)
{
Hosts.Remove(Line);
Console.WriteLine("[REMOVED] {0} {1}", Line.IP.ToString(), Line.Aliases.ToString());
}
break;
case "on":
case "enable":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
if (args_queue.Count == 0)
{
throw new HostNotSpecifiedException();
}
Lines = Hosts.GetMatched(args[1]);
if (Lines.Count == 0)
{
throw new HostNotFoundException(args[1]);
}
foreach (HostsItem Line in Lines)
{
Line.Enabled = true;
Console.WriteLine("[ENABLED] {0} {1}", Line.IP.ToString(), Line.Aliases.ToString());
}
break;
case "off":
case "disable":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
if (args_queue.Count == 0)
{
throw new HostNotSpecifiedException();
}
Lines = Hosts.GetMatched(args[1]);
if (Lines.Count == 0)
{
throw new HostNotFoundException(args[1]);
}
foreach (HostsItem Line in Lines)
{
Line.Enabled = false;
Console.WriteLine("[DISABLED] {0} {1}", Line.IP.ToString(), Line.Aliases.ToString());
}
break;
case "hide":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
if (args_queue.Count == 0)
{
throw new HostNotSpecifiedException();
}
Lines = Hosts.GetMatched(args[1]);
if (Lines.Count == 0)
{
throw new HostNotFoundException(args[1]);
}
foreach (HostsItem Line in Lines)
{
Line.Hidden = true;
Console.WriteLine("[HIDDEN] {0} {1}", Line.IP.ToString(), Line.Aliases.ToString());
}
break;
case "show":
if (!MakeWritable(hosts_file))
{
throw new NoWritePermissionException();
}
if (args_queue.Count == 0)
{
throw new HostNotSpecifiedException();
}
Lines = Hosts.GetMatched(args[1]);
if (Lines.Count == 0)
{
throw new HostNotFoundException(args[1]);
}
foreach (HostsItem Line in Lines)
{
Line.Hidden = false;
Console.WriteLine("[SHOWN] {0} {1}", Line.IP.ToString(), Line.Aliases.ToString());
}
break;
default:
Console.WriteLine("[ERROR] Unknown command");
Help(interactive);
return;
}
MakeWritable(rollback_file);
ForceCopy(hosts_file, rollback_file);
Hosts.Save();
}
catch (NoWritePermissionException)
{
Console.WriteLine("[ERROR] No write permission to the hosts file");
}
catch (HostNotSpecifiedException)
{
Console.WriteLine("[ERROR] Host not specified");
}
catch (HostNotFoundException e)
{
Console.WriteLine("[ERROR] Host '{0}' not found", e.Host);
}
catch (Exception e)
{
#if DEBUG
Console.WriteLine("[ERROR] " + e.ToString());
#else
Console.WriteLine("[ERROR] " + e.Message);
#endif
}
}