public int removeEntry(hostsentry he)
{
int iRet =0;
try
{
string[] lVals = rKeyTCPIP.OpenSubKey(he.sHost, true).GetValueNames();
foreach (string s in lVals)
{
rKeyTCPIP.DeleteValue(s);
}
try
{
rKeyTCPIP.DeleteValue("");//delete default value
}
catch (Exception) { }
rKeyTCPIP.Close();
rKeyTCPIP = null;
if (myregistry.RegDelKey(regSubKey, he.sHost) == 0)
{
iRet = 1;
this.allHosts.Remove(he.sHost);
}
rKeyTCPIP = Registry.LocalMachine.OpenSubKey(regSubKey, true);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Exception in remove(): " + ex.Message);
}
return iRet;
}
public int removeEntry(hostsentry he)
{
int iRet = 0;
try
{
string[] lVals = rKeyTCPIP.OpenSubKey(he.sHost, true).GetValueNames();
foreach (string s in lVals)
{
rKeyTCPIP.DeleteValue(s);
}
try
{
rKeyTCPIP.DeleteValue("");//delete default value
}
catch (Exception) { }
rKeyTCPIP.Close();
rKeyTCPIP = null;
if (myregistry.RegDelKey(regSubKey, he.sHost) == 0)
{
iRet = 1;
this.allHosts.Remove(he.sHost);
}
rKeyTCPIP = Registry.LocalMachine.OpenSubKey(regSubKey, true);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Exception in remove(): " + ex.Message);
}
return(iRet);
}
private void listHosts_SelectedIndexChanged(object sender, EventArgs e)
{
hostsentry he = (hostsentry)listHosts.SelectedItem;
txtHost.Text = he.sHost;
listIP.Items.Clear();
if (he.ipAddress.Count > 0)
{
foreach (System.Net.IPAddress ip in he.ipAddress)
{
listIP.Items.Add(ip.ToString());
}
listIP.SelectedIndex = 0;
}
if (he.ipAddress6.Count > 0)
{
foreach (System.Net.IPAddress ip in he.ipAddress6)
{
listIP.Items.Add(ip.ToString());
}
listIP.SelectedIndex = 0;
}
listAliases.Items.Clear();
if (he.aliases.Count > 0)
{
foreach (string s in he.aliases)
{
listAliases.Items.Add(s);
}
listAliases.SelectedIndex = 0;
}
txtExpires.Text = he.expireTime.ToString();
}
private void btnNew_Click(object sender, EventArgs e)
{
hostsentry he = new hostsentry();
he.sHost = "NEW ENTRY - PLEASE CHANGE";
he.ipAddress.Add(new System.Net.IPAddress(0));
listHosts.Items.Insert(0, he);
listHosts.SelectedIndex = 0;
}
public hostsentry getEntry(string sHost)
{
hostsentry he = new hostsentry();
//test if entry exists
if (this.allHosts.TryGetValue(sHost, out he))
{
return(he);
}
return(he);
}
public int saveEntry(hostsentry he)
{
int iRet = 0;
RegistryKey regWork = null;
//create subkey if not exist
try
{
regWork = rKeyTCPIP.CreateSubKey(he.sHost);
List <byte> b = new List <byte>();
foreach (System.Net.IPAddress ip in he.ipAddress)
{
b.AddRange(ip.GetAddressBytes()); //can be ip4 or ip6
iRet++;
}
if (b.Count >= 4)
{
regWork.SetValue("ipaddr", b.ToArray(), RegistryValueKind.Binary);
}
b.Clear();
foreach (System.Net.IPAddress ip6 in he.ipAddress6)
{
b.AddRange(ip6.GetAddressBytes()); //can be ip4 or ip6
iRet++;
}
if (b.Count >= 4)
{
regWork.SetValue("ipaddr6", b.ToArray(), RegistryValueKind.Binary);
}
if (he.aliases.Count > 0)
{
regWork.SetValue("aliases", he.aliases.ToArray(), RegistryValueKind.MultiString);
}
if (he.expireTime != 0)
{
regWork.SetValue("expireTime", BitConverter.GetBytes(he.expireTime), RegistryValueKind.Binary);
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Exception in saveEntry(): " + ex.Message);
}
return(iRet);
}
private void mnuSaveChanges_Click(object sender, EventArgs e)
{
if (txtHost.Text.Length == 0 || listIP.Items.Count == 0)
{
return;
}
hostsentry heTmp = (hostsentry)listHosts.SelectedItem;
List <string> lAliases = new List <string>();
List <System.Net.IPAddress> lIP4 = new List <System.Net.IPAddress>();
List <System.Net.IPAddress> lIP6 = new List <System.Net.IPAddress>();
ulong lExpireTime = Convert.ToUInt64(txtExpires.Text);
foreach (object o in listAliases.Items)
{
lAliases.Add(o.ToString());
}
foreach (object o in listIP.Items)
{
try
{
System.Net.IPAddress ipTemp = System.Net.IPAddress.Parse(o.ToString());
if (ipTemp.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
lIP4.Add(ipTemp);
}
else if (ipTemp.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
{
lIP6.Add(ipTemp);
}
}
catch { }
}
heTmp.sHost = txtHost.Text;
heTmp.aliases = lAliases;
if (lExpireTime != 0)
{
heTmp.expireTime = lExpireTime;
}
heTmp.ipAddress = lIP4;
heTmp.ipAddress6 = lIP6;
hEntries.addChangeEntry(heTmp);
hEntries.saveEntry(heTmp);
loadItems();
}
/// <summary>
/// add or change host entry
/// </summary>
/// <param name="he"></param>
/// <returns>true for added a new entry
/// false if existing entry is replaced</returns>
public bool addChangeEntry(hostsentry he)
{
bool bRet = false;
hostsentry hTest = new hostsentry();
if (this.allHosts.TryGetValue(he.sHost, out hTest))
{
//there is already an entry
this.allHosts.Remove(he.sHost);
//replace old entry by new one
this.allHosts.Add(he.sHost, he);
bRet = false;
}
else
{
this.allHosts.Add(he.sHost, he);
bRet = true;
}
return(bRet);
}
private void btnRemove_Click(object sender, EventArgs e)
{
if (listHosts.SelectedIndex == -1)
{
return;
}
hostsentry he = (hostsentry)listHosts.SelectedItem;
if (MessageBox.Show("Are you sure to remove '" + he.sHost + "' now?", "Confirm", MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2) == DialogResult.Cancel)
{
return;
}
if (hEntries.removeEntry(he) == 1)
{
loadItems();
}
else
{
MessageBox.Show("Remove failed");
}
}
private void btnNew_Click(object sender, EventArgs e)
{
hostsentry he = new hostsentry();
he.sHost = "NEW ENTRY - PLEASE CHANGE";
he.ipAddress.Add(new System.Net.IPAddress(0));
listHosts.Items.Insert(0, he);
listHosts.SelectedIndex = 0;
}
int loadRegistry()
{
int iRet = 0;
string[] subKeys = rKeyTCPIP.GetSubKeyNames();
allHosts.Clear();
foreach (string sHost in subKeys)
{
hostsentry hEntry = new hostsentry();
hEntry.sHost = sHost;
if (existsValue(sHost, "Aliases"))
{
string[] sAliases = (string[])rKeyTCPIP.OpenSubKey(sHost).GetValue("Aliases", null);
if (sAliases != null)
{
foreach (string s in sAliases)
{
hEntry.aliases.Add(s);
}
}
}
hEntry.expireTime = 0; //do not save!
if (existsValue(sHost, "ExpireTime"))
{
byte[] bExpires = (byte[])rKeyTCPIP.OpenSubKey(sHost).GetValue("ExpireTime ", null);
if (bExpires != null)
{
ulong ul = BitConverter.ToUInt64(bExpires, 0);
hEntry.expireTime = ul;
}
}
if (existsValue(sHost, "ipAddr"))
{
byte[] bIpAddress4 = (byte[])rKeyTCPIP.OpenSubKey(sHost).GetValue("ipAddr", null);
if (bIpAddress4 != null && bIpAddress4.Length >= 4)
{
if (bIpAddress4.Length > 4)
{
for (int offset = 0; offset < bIpAddress4.Length; offset += 4)
{
byte[] bIp = new byte[4];
Array.Copy(bIpAddress4, offset, bIp, 0, 4);
System.Net.IPAddress ip = System.Net.IPAddress.Parse(
bIp[0].ToString() + "." +
bIp[1].ToString() + "." +
bIp[2].ToString() + "." +
bIp[3].ToString());
hEntry.ipAddress.Add(ip);
}
}
else
{
System.Net.IPAddress ip = System.Net.IPAddress.Parse(
bIpAddress4[0].ToString() + "." +
bIpAddress4[1].ToString() + "." +
bIpAddress4[2].ToString() + "." +
bIpAddress4[3].ToString());
hEntry.ipAddress.Add(ip);
}
}
}
//ip6 address is 16 bytes
// ie 2001:0db8:ac10:fe01:0000:0000:0000:0000
if (existsValue(sHost, "ipAddr6"))
{
byte[] bIpAddress6 = (byte[])rKeyTCPIP.OpenSubKey(sHost).GetValue("ipAddr6", null);
if (bIpAddress6 != null && bIpAddress6.Length >= 16)
{
if (bIpAddress6.Length > 16)
{
for (int offset = 0; offset < bIpAddress6.Length; offset += 16)
{
byte[] bIp = new byte[16];
Array.Copy(bIpAddress6, offset, bIp, 0, 16);
System.Net.IPAddress ip6 = getIP6fromByte(bIp);
if (ip6 != System.Net.IPAddress.None)
{
hEntry.ipAddress6.Add(ip6);
}
}
}
else
{
System.Net.IPAddress ip6 = getIP6fromByte(bIpAddress6);
if (ip6 != System.Net.IPAddress.None)
{
hEntry.ipAddress6.Add(ip6);
}
}
}
}
this.allHosts.Add(hEntry.sHost, hEntry);
}
return(iRet);
}
public int saveEntry(hostsentry he)
{
int iRet = 0;
RegistryKey regWork=null;
//create subkey if not exist
try
{
regWork = rKeyTCPIP.CreateSubKey(he.sHost);
List<byte> b = new List<byte>();
foreach (System.Net.IPAddress ip in he.ipAddress)
{
b.AddRange(ip.GetAddressBytes()); //can be ip4 or ip6
iRet++;
}
if(b.Count>=4)
regWork.SetValue("ipaddr", b.ToArray(), RegistryValueKind.Binary);
b.Clear();
foreach (System.Net.IPAddress ip6 in he.ipAddress6)
{
b.AddRange(ip6.GetAddressBytes()); //can be ip4 or ip6
iRet++;
}
if (b.Count >= 4)
regWork.SetValue("ipaddr6", b.ToArray(), RegistryValueKind.Binary);
if(he.aliases.Count>0)
regWork.SetValue("aliases", he.aliases.ToArray(), RegistryValueKind.MultiString);
if(he.expireTime!=0)
regWork.SetValue("expireTime", BitConverter.GetBytes(he.expireTime), RegistryValueKind.Binary);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Exception in saveEntry(): " + ex.Message);
}
return iRet;
}
public hostsentry getEntry(string sHost)
{
hostsentry he = new hostsentry();
//test if entry exists
if (this.allHosts.TryGetValue(sHost, out he))
return he;
return he;
}
/// <summary>
/// add or change host entry
/// </summary>
/// <param name="he"></param>
/// <returns>true for added a new entry
/// false if existing entry is replaced</returns>
public bool addChangeEntry(hostsentry he)
{
bool bRet = false;
hostsentry hTest = new hostsentry();
if (this.allHosts.TryGetValue(he.sHost, out hTest))
{
//there is already an entry
this.allHosts.Remove(he.sHost);
//replace old entry by new one
this.allHosts.Add(he.sHost, he);
bRet = false;
}
else
{
this.allHosts.Add(he.sHost, he);
bRet = true;
}
return bRet;
}
int loadRegistry()
{
int iRet = 0;
string[] subKeys = rKeyTCPIP.GetSubKeyNames();
allHosts.Clear();
foreach (string sHost in subKeys)
{
hostsentry hEntry = new hostsentry();
hEntry.sHost = sHost;
if (existsValue(sHost, "Aliases"))
{
string[] sAliases = (string[])rKeyTCPIP.OpenSubKey(sHost).GetValue("Aliases", null);
if (sAliases != null)
{
foreach(string s in sAliases)
hEntry.aliases.Add(s);
}
}
hEntry.expireTime = 0; //do not save!
if (existsValue(sHost, "ExpireTime"))
{
byte[] bExpires = (byte[])rKeyTCPIP.OpenSubKey(sHost).GetValue("ExpireTime ", null);
if (bExpires != null)
{
ulong ul = BitConverter.ToUInt64(bExpires, 0);
hEntry.expireTime = ul;
}
}
if (existsValue(sHost, "ipAddr"))
{
byte[] bIpAddress4 = (byte[])rKeyTCPIP.OpenSubKey(sHost).GetValue("ipAddr", null);
if (bIpAddress4 != null && bIpAddress4.Length >= 4)
{
if (bIpAddress4.Length > 4)
{
for (int offset = 0; offset < bIpAddress4.Length; offset += 4)
{
byte[] bIp = new byte[4];
Array.Copy(bIpAddress4, offset, bIp, 0, 4);
System.Net.IPAddress ip = System.Net.IPAddress.Parse(
bIp[0].ToString() + "." +
bIp[1].ToString() + "." +
bIp[2].ToString() + "." +
bIp[3].ToString());
hEntry.ipAddress.Add(ip);
}
}
else
{
System.Net.IPAddress ip = System.Net.IPAddress.Parse(
bIpAddress4[0].ToString() + "." +
bIpAddress4[1].ToString() + "." +
bIpAddress4[2].ToString() + "." +
bIpAddress4[3].ToString());
hEntry.ipAddress.Add(ip);
}
}
}
//ip6 address is 16 bytes
// ie 2001:0db8:ac10:fe01:0000:0000:0000:0000
if (existsValue(sHost, "ipAddr6"))
{
byte[] bIpAddress6 = (byte[])rKeyTCPIP.OpenSubKey(sHost).GetValue("ipAddr6", null);
if (bIpAddress6 != null && bIpAddress6.Length >= 16)
{
if (bIpAddress6.Length > 16)
{
for (int offset = 0; offset < bIpAddress6.Length; offset += 16)
{
byte[] bIp = new byte[16];
Array.Copy(bIpAddress6, offset, bIp, 0, 16);
System.Net.IPAddress ip6 = getIP6fromByte(bIp);
if (ip6 != System.Net.IPAddress.None)
hEntry.ipAddress6.Add(ip6);
}
}
else
{
System.Net.IPAddress ip6 = getIP6fromByte(bIpAddress6);
if(ip6!=System.Net.IPAddress.None)
hEntry.ipAddress6.Add(ip6);
}
}
}
this.allHosts.Add(hEntry.sHost, hEntry);
}
return iRet;
}
