by Keyvan Nayyeri via Keyvan Nayyeri on 1/9/2007 2:41:09 PM
Today I made some changes in my ClientBlocker. This may be the last version of this HTTPModule and I won't update it anymore (because it doesn't need any features though).
Using this HTTPModule you can block or trust on single IPs or a range of IPs and also use a free webservice to block site visitors based on their country.
In addition to making some minor changes I simplified the source code and solved a major bug. Now it works brilliantly. Main changes in code logic have been applied here:
#region Public methods
public void Init(HttpApplication context)
{
context.BeginRequest += new EventHandler(context_BeginRequest);
}
public void Dispose()
#endregion
#region Handlers
void context_BeginRequest(object sender, EventArgs e)
HttpApplication application = sender as HttpApplication;
bool block = false;
// Configurations
this.filePath = application.Server.MapPath
(ConfigurationManager.AppSettings["CB_BlockedIPsFile"].ToString());
this.checkService = Convert.ToBoolean
(ConfigurationManager.AppSettings["CB_CheckService"]);
if (this.checkService == true)
string[] CountriesTemp = ConfigurationManager.AppSettings
["CB_BlockedCountries"].ToString().Split(' ');
this.blockedCountries = GetArrayList(CountriesTemp);
try
string clientIP = application.Request.UserHostAddress;
CheckIPs objChecker = new CheckIPs(this.filePath);
if (objChecker.CheckIP(clientIP) == false)
// User wants to check with webservice
XmlDocument doc = new XmlDocument();
string serviceURL = "http://api.hostip.info/?ip=" + clientIP;
doc.Load(serviceURL);
XmlNamespaceManager NSManager = new XmlNamespaceManager(doc.NameTable);
NSManager.AddNamespace("hostip", "http://www.hostip.info/api");
string query = "//hostip:countryAbbrev";
XmlNode node = doc.SelectSingleNode(query, NSManager);
string country = null;
if (node != null)
country = node.InnerText;
if (this.blockedCountries.Contains(country) == true)
block = true;
else
block = false;
catch
// On any unexpected error we let visitor to visit website
if (block)
// Blocking process
application.Response.StatusCode = 200;
application.Response.SuppressContent = true;
application.Response.End();
Like the past you can use an XML file to set trusted and blocked IPs. Below is a sample file:
<?xml version="1.0" encoding="utf-8" ?>
<ips>
<trusted>
<ip value="127.0.0.1"/>
<range lower="128.0.0.0" upper="128.255.255.255" />
</trusted>
<blocked>
<range lower="127.0.0.0" upper="127.255.255.255" />
</blocked>
</ips>
Configurations in Web.Config file look like this:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<appSettings>
<add key="CB_BlockedIPsFile" value="~/IPs.xml"/>
<add key="CB_CheckService" value="false"/>
<add key="CB_BlockedCountries" value="IR RU"/>
</appSettings>
<system.web>
<httpModules>
<add type="ClientBlocker.Blocker, ClientBlocker" name="ClientBlocker" />
</httpModules>
</system.web>
</configuration>
New version is available on my file gallery with source code and installation instructions and you can download it.
Original Post: ClientBlocker 1.5
The content of the postings is owned by the respective author. CSharpFeeds is not responsible for the contents of the postings. This site is automatically generated and cannot be reviewed for abusive content. If you find abusive content on CSharpFeeds, please contact us. Designated trademarks and brands are the property of their respective owners. All rights reserved.
