public override bool Apply(Request request)
{
if (request.Flags["block"] == false)
return false;
Html status = new Html ();
Html hr = Html.Format ("<hr/>");
foreach (Html h in request.GetTriggerHtml ())
status += h + hr;
request.Response = new BlockedResponse ("Blocked", status);
return true;
}
public override Response Status(NameValueCollection httpGet, Request request)
{
Html html = new Html ();
if (httpGet ["return"] != null) {
request.Response.ReplaceHeader ("Location", httpGet ["return"]);
request.Response.HttpCode = HttpStatusCode.Redirect;
}
if (httpGet ["delete"] != null) {
int item = int.Parse (httpGet ["delete"]);
try {
listLock.EnterWriteLock ();
foreach (RegexFilter rf in filterList.ToArray ()) {
if (rf.GetHashCode () == item) {
filterList.Remove (rf);
foreach (KeyValuePair<string, List<RegexFilter>> pair in hashList) {
pair.Value.Remove (rf);
}
}
}
} finally {
listLock.ExitWriteLock ();
}
SaveFilters ();
}
if (httpGet ["action"] != null) {
RegexFilter filter = RegexFilter.Parse (httpGet ["pattern"], new Flags (httpGet ["flags"]));
if (filter != null) {
try {
listLock.EnterWriteLock ();
AddFilter (filter);
} finally {
listLock.ExitWriteLock ();
}
SaveFilters ();
}
}
html += Html.Format (@"
<p>Patterns are in a subset of the AdBlock pattern.</p>
<p>Example: http://example.com, http://*.example.com, *example.com* or ||example.com</p>
<table>
<tr><th>Pattern</th><th>Flags</th><th></th></th>
<form action=""?"" method=""get"">
<tr>
<td><input type=""text"" name=""pattern"" value="""" /></td>
<td><input type=""text"" name=""flags"" value=""block"" /></td>
<td><input type=""submit"" name=""action"" value=""Add"" /></td>
</tr>
</form>");
try {
listLock.EnterReadLock ();
html += Html.Format ("<h1>Block List</h1>");
foreach (RegexFilter regex in filterList) {
html += Html.Format ("<tr><td>{0}</td><td>{1}</td><td><a href=\"?delete={2}\">delete</a></td></tr>", regex.Pattern, regex.Flags, regex.GetHashCode ());
}
} finally {
listLock.ExitReadLock ();
}
html += Html.Format ("</table>");
return WebUI.ResponseTemplate (ToString (), html);
}
public HtmlData(Html html)
{
htmlBuffer = Encoding.UTF8.GetBytes (html.HtmlString);
}
private Html Form(string fromHost, string toHost, string returnUrl)
{
Html returnHtml = new Html ();
if (returnUrl != null)
returnHtml = Html.Format (@"<input type=""hidden"" name=""return"" value=""{0}"" />", returnUrl);
return Html.Format (@"
<form action=""{0}"" method=""get"">
{1}
<tr>
<td><input type=""text"" name=""from"" value=""{2}"" /></td>
<td><input type=""text"" name=""to"" value=""{3}"" /></td>
<td>
<input type=""text"" name=""flags"" value="""" />
<input type=""submit"" name=""action"" value=""Add custom flags"" />
<br/>
<input type=""submit"" name=""action"" value=""Pass"" />
<input type=""submit"" name=""action"" value=""Fake"" />
<input type=""submit"" name=""action"" value=""Clean"" />
<input type=""submit"" name=""action"" value=""Remove"" />
<input type=""submit"" name=""action"" value=""Block"" />
</td>
</tr>
</form>", Filters.WebUI.FilterUrl (this), returnHtml, fromHost, toHost);
}
public override Response Status(NameValueCollection httpGet, Request request)
{
Html html = new Html ();
if (httpGet ["delete"] != null) {
int item = int.Parse (httpGet ["delete"]);
using (listLock.Write) {
foreach (RefererPair rp in watchlist.ToArray ()) {
if (rp.GetHashCode () == item)
watchlist.Remove (rp);
}
}
SaveFilters ();
}
if (httpGet ["clear"] != null) {
using (listLock.Write) {
blocked.Clear ();
}
}
if (httpGet ["action"] != null || httpGet ["flags"] != null) {
RefererPair p = new RefererPair (httpGet ["from"], httpGet ["to"]);
p.Flags.Set (httpGet ["flags"]);
if (httpGet ["action"].Contains (" ") == false)
p.Flags.Set (httpGet ["action"]);
using (listLock.Write) {
watchlist.Add (p);
foreach (RefererPair bp in blocked.ToArray ()) {
if (p.Match (bp))
blocked.Remove (bp);
}
}
SaveFilters ();
}
if (httpGet ["return"] != null) {
Response resp = new Response (HttpStatusCode.Redirect, new Html ());
resp.ReplaceHeader ("Location", httpGet ["return"]);
return resp;
}
html += Html.Format (@"<h2>Blocked <a href=""?clear=yes"">clear</a></h2>");
html += Html.Format ("<table><tr><th>From Domain</th><th>To Domain</th><th>Flags</th></tr>");
html += Form ("", "");
using (listLock.Read) {
foreach (RefererPair pair in blocked) {
html += Form (pair);
}
html += Html.Format ("</table>");
html += Html.Format ("<h2>Watchlist</h2>");
html += Html.Format ("<table><tr><th>From Domain</th><th>To Domain</th><th>Flags</th><th>Delete</th></tr>");
foreach (RefererPair pair in watchlist) {
html += Html.Format ("<tr><td>{0}</td><td>{1}</td><td>{2}</td><td><a href=\"?delete={3}\">delete</a></td></tr>", pair.FromHost, pair.ToHost, pair.Flags, pair.GetHashCode ());
}
html += Html.Format ("</table>");
}
html += Html.Format (@"
<div>
<ul>
<li><strong>Pass</strong> Allow request to pass through unmodified</li>
<li><strong>Fake</strong> Change referer to the root of the target host</li>
<li><strong>Clean</strong> Change referer to the root of the source host</li>
<li><strong>Remove</strong> Remove the referer header</li>
<li><strong>Slow</strong> Do not modify the request but slow down the transfer speed</li>
<li><strong>Block</strong> Block the entire request</li>
</ul>
<p>From/To: Wildcard(*) allowed in start of domains, applies to subdomains only</p>
<p>Example: *example.com matches xyz.example.com and example.com but not badexample.com</p>
</div>");
return WebUI.ResponseTemplate (ToString (), html);
}
public void Block(string title, Html htmlMessage)
{
//Determine content type requested
// string cc = null;
// while (true) {
// if (Accept == null) {
// if (Uri.AbsolutePath.EndsWith (".js")) {
// cc = "application/x-javascript";
// break;
// }
// if (Uri.AbsolutePath.EndsWith (".css")) {
// cc = "text/css";
// break;
// }
// if (Uri.AbsolutePath.EndsWith (".png")) {
// cc = "image/png";
// break;
// }
// if (Uri.AbsolutePath.EndsWith (".js")) {
// cc = "application/javascript";
// break;
// }
// }
// if (Accept.StartsWith ("text/css")) {
// cc = "text/css";
// break;
// }
//
// cc = "text/html";
// break;
// }
Response = new BlockedResponse (title, htmlMessage);
}
