string EP_show_reason(IHttpRequestResponse req)
{
string result = "";
string prefix = "url=";
try
{
string reason = "No url found";
if (!string.IsNullOrEmpty(req.QueryString))
{
int startIndex = req.QueryString.IndexOf(prefix);
if (startIndex > -1)
{
Uri url = new Uri(System.Net.WebUtility.UrlDecode(req.QueryString.Substring(startIndex + prefix.Length)));
isBlockedFullFlow(url, out reason);
}
}
result = AndroidApp.Properties.Resources.BlockedPage.Replace("{0}", reasonToHTML(reason));
}
catch (Exception ex)
{
result = stringHTML(ex.ToString(), "Error");
AndroidBridge.e(TAG, ex.ToString());
}
return(result);
}
string EP_echo(IHttpRequestResponse req)
{
string result = "";
try
{
string headers = "";
foreach (var key in req.Headers.Keys)
{
headers += $"{key}: {req.Headers[key]}\r\n";
}
string sentBody = readReqBodyAsString(req);
result =
AndroidApp.Properties.Resources.Echo
.Replace("{0}", headers)
.Replace("{1}", sentBody)
.Replace("{2}", req.Method)
.Replace("{3}", req.Path)
;
}
catch (Exception ex)
{
result = stringHTML(ex.ToString(), "Error");
AndroidBridge.e(TAG, ex.ToString());
}
return(result);
}
async Task SendResponseAsync(IHttpRequestResponse request, HttpSender httpSender)
{
try
{
if (request.RequestType == RequestType.TCP)
{
string path = request.Path;
string responseContentType = ContentHTML;
string responseBody = $"<html>\r\n<body>Unknown Path:\r\n{path}</body>\r\n</html>";
if (path.StartsWith("/echo"))
{
responseContentType = ContentHTML;
responseBody = EP_echo(request);
}
else if (path.StartsWith("/history"))
{
responseContentType = ContentHTML;
responseBody = EP_domainHistory(request);
}
else if (path.StartsWith("/check"))
{
responseContentType = ContentJSON;
responseBody = EP_checkDomain(request);
}
else if (path.StartsWith("/reason"))
{
responseContentType = ContentHTML;
responseBody = EP_show_reason(request);
}
var response = new HttpResponse
{
StatusCode = (int)HttpStatusCode.OK,
ResponseReason = HttpStatusCode.OK.ToString(),
Headers = new Dictionary <string, string>
{
{ "Date", DateTime.UtcNow.ToString("r") },
{ "Content-Type", responseContentType },
{ "Connection", "close" }
},
Body = new MemoryStream(Encoding.UTF8.GetBytes(responseBody))
};
AndroidBridge.d(TAG, "[RESP-SEND] \"" + request.Path + "\" IP: " + ipString(request.RemoteIpEndPoint));
await httpSender.SendTcpResponseAsync(request, response).ConfigureAwait(false);
request.TcpClient.Close(); // Force close!
AndroidBridge.d(TAG, "[END] \"" + request.Path + "\" IP: " + ipString(request.RemoteIpEndPoint));
}
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex.ToString());
}
}
public static void AppendLinePublic(string relativePath, string line)
{
try
{
File.AppendAllLines(AndroidBridge.GetAbsulotePath(relativePath, isPublic: true), new[] { line });
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex);
}
}
public void Stop()
{
try
{
AndroidBridge.d(TAG, "Closing server");
cancellationTokenSource?.Cancel();
myServerInstance?.Dispose();
myListener?.Stop();
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex.ToString());
}
}
string EP_domainHistory(IHttpRequestResponse req)
{
string result = "";
try
{
string body = String.Join("<br />", domainHistory);
result = stringHTML(body: body);
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex.ToString());
}
return(result);
}
public static TaskResult SetPassword(string newPass)
{
TaskResult result = TaskResult.Fail("Init");
try
{
newPass = get256Hash(newPass);
File.WriteAllText(Filenames.MASTER_PASSWORD.getAppPrivate(), newPass);
result = TaskResult.Success("Master password saved");
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex);
result = TaskResult.Fail(ex.ToString());
}
return(result);
}
string stringHTML(string body = "", string title = "")
{
string result = "";
try
{
result =
AndroidApp.Properties.Resources.EmptyHTML
.Replace("{title}", title)
.Replace("{body}", body)
;
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex.ToString());
}
return(result);
}
public static string ReadAssetAsString(Context ctx, string tag, string asset_name)
{
string result = "";
try
{
using (Stream s = ctx.Assets.Open(asset_name))
{
StreamReader reader = new StreamReader(s);
result = reader.ReadToEnd();
}
}
catch (Exception ex)
{
AndroidBridge.e(tag, ex);
}
return(result);
}
public static async Task onlyUnlockedAsync(Func <Task> callback)
{
try
{
var isLocked = TimeLock.isLocked();
if (isLocked)
{
AndroidBridge.ToastIt(isLocked.eventReason);
}
else
{
await callback();
}
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex);
}
}
string readReqBodyAsString(IHttpRequestResponse req)
{
string result = "";
try
{
if (req.Body != null && req.Body.Length > 0)
{
StreamReader reader = new StreamReader(req.Body);
req.Body.Position = 0;
result = reader.ReadToEnd();
}
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex.ToString());
}
return(result);
}
public static string domainCategoryResult(bool block)
{
string result = "";
try
{
int myCategory = block ? Category_Blocked : Category_Allowed;
var jsonObject = new JObject();
jsonObject["categories"] = new JArray(new[] { new JValue(myCategory) });
jsonObject["resultCode"] = new JValue(0);
result = jsonObject.ToString();
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex.ToString());
}
return(result);
}
public static TaskResult ComparePass(string checkPass)
{
TaskResult result = TaskResult.Fail("Init");
try
{
checkPass = get256Hash(checkPass);
string currentPass = File.ReadAllText(Filenames.MASTER_PASSWORD.getAppPrivate());
bool arePasswordHashSame = checkPass.Equals(currentPass);
result = new TaskResult();
result.success = arePasswordHashSame;
result.eventReason = "Are password same? " + arePasswordHashSame;
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex);
result = TaskResult.Fail(ex.ToString());
}
return(result);
}
public void Start(int port)
{
try
{
myListener = new TcpListener(IPAddress.Loopback, port)
{
ExclusiveAddressUse = false
};
var httpSender = new HttpSender();
cancellationTokenSource = new CancellationTokenSource();
myServerInstance = myListener.ToHttpListenerObservable(cancellationTokenSource.Token)
.Do(r =>
{
AndroidBridge.d(TAG, "[START] \"" + r.Path + "\" IP: " + ipString(r.RemoteIpEndPoint));
})
// Send reply to browser
.Select(r => Observable.FromAsync(() => SendResponseAsync(r, httpSender)))
.Concat()
.Subscribe(r =>
{
//Console.WriteLine("Reply sent.");
},
ex =>
{
AndroidBridge.e(TAG, ex.ToString());
},
() =>
{
AndroidBridge.d(TAG, "Server completed");
});
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex.ToString());
}
}
string EP_checkDomain(IHttpRequestResponse req)
{
string result = "";
try
{
var reqJSON = readReqBodyAsString(req);
string domain = SpinResultHelper.getDomainName(reqJSON).Trim(new char[] { ' ', '"' });
domainHistory.Add(domain);
string reason = "";
bool block = isBlockedFullFlow(new Uri(domain), out reason);
if (block)
{
try
{
File.AppendAllLines(Filenames.BLOCK_LOG.getAppPublic(), new[] {
string.Format("[{0}] {1} {2}", DateTime.Now, domain, reason)
});
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex);
}
}
result = SpinResultHelper.domainCategoryResult(block);
}
catch (Exception ex)
{
result = "{\"error\":\"0\"}".Replace("0", ex.ToString());
AndroidBridge.e(TAG, ex.ToString());
}
return(result);
}
private static string ForceLockDate(DateTime date)
{
string result = "";
try
{
string unlockPath = Filenames.LOCK_DATE.getAppPrivate();
AndroidBridge.d(TAG, "(*) Locking until '" + date.ToString() + "'");
if (File.Exists(unlockPath))
{
File.Delete(unlockPath);
}
File.WriteAllText(unlockPath, date.ToString());
result = "Sucess! Locked to " + date.ToString();
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex);
result = ex.ToString();
}
return(result);
}
public void StartFlow()
{
try
{
// Reload policies:
FilteringObjects.httpPolicy.reloadPolicy(File.ReadAllText(Filenames.HTTP_POLICY.getAppPrivate()));
FilteringObjects.timePolicy.reloadPolicy(File.ReadAllText(Filenames.TIME_POLICY.getAppPrivate()));
if (!AndroidBridge.isForegroundServiceUp())
{
AndroidBridge.OnForgroundServiceStart = () =>
{
AndroidBridge.d(TAG, "Starting filtering flow");
myHTTPServer.StartHttpServer();
StartPeriodicTasks();
};
AndroidBridge.OnForgroundServiceStop = () =>
{
AndroidBridge.d(TAG, "Stopping filtering flow");
StopPeriodicTasks();
myHTTPServer.StopHTTPServer();
};
AndroidBridge.StartForgroundService();
}
else
{
AndroidBridge.ToastIt("Service already up!");
}
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex);
}
}
public void scheduleRepeated()
{
TimeSpan WIFI_PERIOD = (FilteringObjects.isFiltering && FilteringObjects.isInWifiBlockZone) ?
WIFI_PERIOD_BLOCKED : WIFI_PERIOD_ALLOWED;
int taskID = AndroidBridge.scheduleJob(WIFI_PERIOD, WIFI_PERIOD + TimeSpan.FromSeconds(10), null,
(finishFunc) => {
if (AndroidBridge.isForegroundServiceUp())
{
AndroidBridge.StartWifiScanning();
scheduleRepeated();
}
finishFunc(false);
},
() => AndroidBridge.isForegroundServiceUp(),
null,
() => false
);
if (taskID < 0)
{
AndroidBridge.e(TAG, "Failed to schedule job.");
}
}
public static string getDomainName(string jsonBody)
{
string result = "";
try
{
var jsonObject = JObject.Parse(jsonBody);
var version = jsonObject["v"].ToString();
if (version == "1")
{
var domainName = jsonObject["domainName"];
result = domainName.ToString();
}
else
{
throw new Exception("Unknown Version of domain request");
}
}
catch (Exception ex)
{
AndroidBridge.e(TAG, ex.ToString());
}
return(result);
}
public static void WifiCheckerCallback(List <string> wifiLists, TimeSpan?timeSinceLastScan, Exception callbackEx)
{
string reason = "init";
bool shouldLogDebug = false;
if (callbackEx != null)
{
// Dont even check, bad zone:
FilteringObjects.isInWifiBlockZone = true;
reason = "callback with exepction.";
shouldLogDebug = true;
}
else
{
TimeSpan actualTime = (timeSinceLastScan ?? TimeSpan.FromDays(1));
if (actualTime > FilteringServiceFlow.WIFI_PERIOD_BLOCKED)
{
// Dont even check, bad zone:
FilteringObjects.isInWifiBlockZone = true;
reason = "results are old, wifi off? (Time: " + actualTime + ")";
shouldLogDebug = true;
}
else
{
bool inBadZoneResult = true;
try
{
if (!File.Exists(Filenames.WIFI_POLICY.getAppPrivate()))
{
File.WriteAllText(Filenames.WIFI_POLICY.getAppPrivate(), "");
}
IEnumerable <string> currentRules = File.ReadAllLines(Filenames.WIFI_POLICY.getAppPrivate());
List <string> newRules = new List <string>();
//TODO Reason what wifi blocked.
inBadZoneResult = CheckBlacklistedWifiStandard.WifiHelper.fastBlockZoneCheck(wifiLists, currentRules, out newRules,
(log) => { /* AndroidBridge.d(TAG, "[CheckBlacklistedWifi] " + log);*/ }, out reason
);
File.WriteAllLines(Filenames.WIFI_POLICY.getAppPrivate(), newRules);
}
catch (Exception ex2)
{
AndroidBridge.e(TAG, ex2);
inBadZoneResult = false; // allow in case of exceptions...
reason = "Exception processing Wifi Algo";
}
if (!showReason && FilteringObjects.isInWifiBlockZone != inBadZoneResult)
{
AndroidBridge.ToastIt("Changing blackzone to: " + inBadZoneResult);
}
FilteringObjects.isInWifiBlockZone = inBadZoneResult;
}
}
reason = "[Blockzone? " + FilteringObjects.isInWifiBlockZone + "] " + reason;
if (showReason)
{
AndroidBridge.ToastIt(reason);
showReason = false; // Reset it until user mark it again.
}
if (shouldLogDebug)
{
if (callbackEx != null)
{
reason += "\nCallback Exception:\n" + callbackEx.ToString();
}
AndroidBridge.d(TAG, reason);
}
}
