private void SnifferMain_Load(object sender, EventArgs e)
{
// Initialize capture filter
SnifferFilter filter = new SnifferFilter(
true, true, true,
null, -1, null, -1);
SnifferConfig.Filter = filter;
}
public void TestFilterGenerator()
{
SnifferFilter filter = new SnifferFilter(
true, true, true,
null, -1, null, -1);
// Protocol test
string filter_s = filter.FilterString;
Assert.AreEqual("(arp or (ip proto \\tcp) or (ip proto \\udp))", filter_s);
filter.bARP = false;
filter.bTCP = false;
filter.bUDP = false;
filter_s = filter.FilterString;
Assert.AreEqual("ip", filter_s);
filter.bUDP = true;
filter.bARP = true;
filter_s = filter.FilterString;
Assert.AreEqual("(arp or (ip proto \\udp))", filter_s);
// IP address test
byte[] src = { 192, 168, 1, 1 };
filter.srcIP = new IPAddress(src);
filter_s = filter.FilterString;
Assert.AreEqual("(arp or (ip proto \\udp)) and (src host 192.168.1.1)", filter_s);
filter.destPort = 80;
filter_s = filter.FilterString;
Assert.AreEqual("(arp or (ip proto \\udp)) and (dst port 80) and (src host 192.168.1.1)", filter_s);
filter.srcPort = 4541;
filter_s = filter.FilterString;
Assert.AreEqual("(arp or (ip proto \\udp)) and (dst port 80) and (src host 192.168.1.1) and (src port 4541)", filter_s);
byte[] dst = { 8, 8, 8, 8 };
filter.destIP = new IPAddress(dst);
filter_s = filter.FilterString;
Assert.AreEqual("(arp or (ip proto \\udp)) and (dst host 8.8.8.8) and (dst port 80) and (src host 192.168.1.1) and (src port 4541)", filter_s);
filter.srcIP = null;
filter_s = filter.FilterString;
Assert.AreEqual("(arp or (ip proto \\udp)) and (dst host 8.8.8.8) and (dst port 80) and (src port 4541)", filter_s);
}
private void FilterDlg_Activated(object sender, EventArgs e)
{
// Set control status according to filter settings
SnifferFilter filter = SnifferConfig.Filter;
arp_chk.Checked = filter.bARP;
tcp_chk.Checked = filter.bTCP;
udp_chk.Checked = filter.bUDP;
bool bSrc = filter.bSrc;
src_ip_chk.Checked = bSrc;
src_ip_label.Enabled = bSrc;
src_port_label.Enabled = bSrc;
src_ip.Enabled = bSrc;
if (filter.srcIP != null)
{
src_ip.SetAddressBytes(filter.srcIP.GetAddressBytes());
}
src_port.Enabled = bSrc;
if (filter.srcPort != -1)
{
src_port.Text = filter.srcPort.ToString();
}
bool bDest = filter.bDest;
dest_ip_chk.Checked = bDest;
dest_ip_label.Enabled = bDest;
dest_ip.Enabled = bDest;
if (filter.destIP != null)
{
dest_ip.SetAddressBytes(filter.destIP.GetAddressBytes());
}
dest_port.Enabled = bDest;
if (filter.destPort != -1)
{
dest_port.Text = filter.destPort.ToString();
}
dest_port_label.Enabled = bDest;
}
private void SnifferMain_Load(object sender, EventArgs e)
{
// Initialize capture filter
SnifferFilter filter = new SnifferFilter(
true, true, true,
null, -1, null, -1);
SnifferConfig.Filter = filter;
}
private void ok_btn_Click(object sender, EventArgs e)
{
int iport;
bool bOK;
string port;
byte[] addr_b;
byte[] empty = { 0, 0, 0, 0 };
// Save current config
SnifferFilter filter = SnifferConfig.Filter;
filter.bARP = arp_chk.Checked;
filter.bTCP = tcp_chk.Checked;
filter.bUDP = udp_chk.Checked;
if (dest_ip_chk.Checked)
{
addr_b = dest_ip.GetAddressBytes();
if (!addr_b.SequenceEqual(empty))
{
filter.destIP = new IPAddress(addr_b);
}
port = dest_port.Text;
bOK = int.TryParse(port, out iport);
if (bOK && iport < 0xFFFF && iport >= 0)
{
filter.destPort = iport;
}
else
{
filter.destPort = -1;
}
}
else
{
filter.destIP = null;
filter.destPort = -1;
}
if (src_ip_chk.Checked)
{
addr_b = src_ip.GetAddressBytes();
if (!addr_b.SequenceEqual(empty))
{
filter.srcIP = new IPAddress(addr_b);
}
port = src_port.Text;
bOK = int.TryParse(port, out iport);
if (bOK && iport < 0xFFFF && iport >= 0)
{
filter.srcPort = iport;
}
else
{
filter.srcPort = -1;
}
}
else
{
filter.srcIP = null;
filter.srcPort = -1;
}
this.DialogResult = DialogResult.OK;
this.Close();
}
