I am trying to implement a solution into my application that mirrors the answer in this post
I have a similar scenario where I have an HttpListener and Grapevine based application running on an Ubuntu server that I need to get working with HTTPS using Mono and I am trying to create and include the relevant keys to allow HTTPS
The problem I am having is the last line of the solution,
key = PrivateKey.CreateFromFile (pvk_file).RSA;
When I try the same Visual Studio shows an error/text highlighted red, 'PrivateKey' does not have a definition for 'CreateFromFile'
Am I using the wrong libraries or is something else the issue with my code itself?
My code, cut down to the relevant method.
using System;
using System.IO;
using System.Security.Cryptography.X509Certificates;
using System.Threading;
using java.security;
public class ConfigureCertificates
{
private readonly string _dirName;
private readonly string _path;
private readonly string _port;
private readonly string _certFile;
public ConfigureCertificates(string port)
{
_dirName = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
_path = Path.Combine(_dirName, ".mono");
_path = Path.Combine(_path, "httplistener");
_port = port;
_certFile = Path.Combine(_path, String.Format("{0}.cer", _port));
}
public void SetUpCerts()
{
if (!File.Exists(_certFile))
throw new Exception("Certificate file not found");
string pvkFile = Path.Combine(_path, String.Format("{0}.pvk", _port));
if (!File.Exists(pvkFile))
throw new Exception("Private key not found");
var cert = new X509Certificate2(_certFile);
var key = PrivateKey.CreateFromFile(pvkFile).RSA; // Error occurs here
}
}
You have a naming clash - in other words there is another class called PrivateKey that doesn't have the method you require. A quick Google hunt indicates the correct class is in the Mono.Security.Authenticode namespace. So you will need to reference the full path:
Mono.Security.Authenticode.PrivateKey.CreateFromFile(...)
You may also need to add the Mono.Security package if you don't already have it.
Related
My problem is to copy file from one system to another system on the same network. I googled for the above problem, I started working with Mark Brackett's answer.
Now i am planning to copy the files from my system to another system, but i am getting following error codes 53, 67, 2202. I resolved the first two error codes successfully. Now i am stuck with 2202. please look into the below code.
NetworkCredential credentials = new NetworkCredential(#"\\192.168.0.110\", "krishna4");
private void btnClick_Click(object sender, EventArgs e)
{
// NetwrokConnection(string networkName, NetworkCredential credentials)
using (new NetworkConnection("\\\\10.235.115.210\\d", credentials)) ;
System.IO.File.Copy("D:\\English\\parts.oxps", #"\\192.168.0.110\test\parts.oxps", true);
}
Please help to resolve the problem. Thanks in advance.
I think your connection credentials may be wrong.it may be invalid user name.
I suggest to refer following link:
ERROR_BAD_USERNAME
WNetUseConnection2 in C#
How to finish this implementation of creating a network share using WNetAddConnection2?
ERROR_BAD_USERNAME :The specified user name is not valid.
Here is Sample Code;
using System;
using System.IO;
using System.Net;
class Program
{
static void Main(string[] args)
{
var networkPath = #"//server/share";
var credentials = new NetworkCredential("username", "password");
using (new NetworkConnection(networkPath, credentials))
{
var fileList = Directory.GetFiles(networkPath);
}
foreach (var file in fileList)
{
Console.WriteLine("{0}", Path.GetFileName(file));
}
}
}
I have the following code which works fine when I use it within a Windows Forms application, however the application I'm writing needs to run as a Windows service, and when I moved my code into the Windows Service template in Visual Studio 2015 Community Edition, I get the following error.
Cannot implicitly convert type "MyWindowsService.Main" to "System.ComponentModel.ISynchronizeVoke". An explicit conversion exists (are you missing a cast?)
Could anyone shed some light on why I am getting this error, and what I need to do to resolve it?
The code which throws the error is the line below, and it is located within the OnStart method of my main class (named Main.cs). The code is used to create an instance of the DataSubscriber class (AdvancedHMI library).
dataSubscribers[dataSubscriberIndex].SynchronizingObject = this;
It has to have something to do with the fact that the code is in a Windows service template, because using this works perfectly in my forms application running the same code.
UPDATE
Correction, I've attempted to cast this to the required type, and now get the following error on run.
Additional information: Unable to cast object of type 'MyWindowsService.Main' to type 'System.ComponentModel.ISynchronizeInvoke'.
Code:
dataSubscribers[dataSubscriberIndex].SynchronizingObject = (System.ComponentModel.ISynchronizeInvoke)this;
UPDATE
I've included the entire contents of the Main.cs file from my Windows Service application.
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks;
using MySql.Data.MySqlClient;
using AdvancedHMIDrivers;
using AdvancedHMIControls;
using MfgControl.AdvancedHMI.Drivers;
using MfgControl.AdvancedHMI.Controls;
using System.Collections.ObjectModel;
namespace PLCHistoricDataHarvester {
public partial class Main : ServiceBase {
private EthernetIPforCLXCom commObject = new EthernetIPforCLXCom();
private globals globals = new globals();
private Dictionary<String, String> operationLines = new Dictionary<String, String>();
private Dictionary<String, String> tags = new Dictionary<String, String>();
private Collection<DataSubscriber> dataSubscribers = new Collection<DataSubscriber>();
private int harvesterQueueCount = 0;
private string harvesterInsertValues = String.Empty;
public Main() {
InitializeComponent();
}
protected override void OnStart(string[] args) {
// Initialize our harvester program
initializeHarvester();
Console.WriteLine("The program has started");
}
protected override void OnStop() {
// Call code when the service is stopped
Console.WriteLine("Program has stopped");
Console.ReadLine();
}
public void initializeHarvester() {
// First, we connect to the database using our global connection object
globals.dbConn.DatabaseName = "operations";
if (!globals.dbConn.IsConnect()) {
// TODO: Unable to connect to database. What do we do?
}
// Second, we connect to the database and pull data from the settings table
globals.initializeSettingsMain();
// Set IP address of PLC
commObject.IPAddress = globals.getSettingsMain("Processor_IP");
// Pull distinct count of our parent tags (Machines ex: Line 1, etc)
operationLines = globals.getOperationLines();
// If we have at least 1 operation line defined...we continue
if (operationLines.Keys.Count > 0) {
//Now we loop over the operation lines, and pull back the data points
int dataSubscriberIndex = 0;
foreach (KeyValuePair<String, String> lines in operationLines) {
int line_id = int.Parse(lines.Key);
string name = lines.Value;
tags = globals.getTags(line_id);
// If we have at least 1 tag for this operation line, we continue...
if (tags.Keys.Count > 0 && tags["tags"].ToString().IndexOf(",") != -1) {
// Create our dataSubscriber object
dataSubscribers.Add(new DataSubscriber());
dataSubscribers[dataSubscriberIndex].SynchronizingObject = (ISynchronizeInvoke)this;
dataSubscribers[dataSubscriberIndex].CommComponent = commObject;
dataSubscribers[dataSubscriberIndex].PollRate = 1000;
dataSubscribers[dataSubscriberIndex].PLCAddressValue = tags["tags"];
dataSubscribers[dataSubscriberIndex].DataChanged += new EventHandler<MfgControl.AdvancedHMI.Drivers.Common.PlcComEventArgs>(subscribeCallback);
// Increment our dataSubscriberIndex
dataSubscriberIndex++;
}
}
}
}
private void subscribeCallback(object sender, MfgControl.AdvancedHMI.Drivers.Common.PlcComEventArgs e) {
// code removed as it is irrelevant
}
}
}
The error message says this:
An explicit conversion exists (are you missing a cast?)
So add a cast like this:
dataSubscribers[dataSubscriberIndex].SynchronizingObject = (ISynchronizeInvoke)this;
^^^^^^^^^^^^^^^^^^^^
//Add this
If you've got a console app, the easiest way to convert it to a windows service is by using Topshelf, a nuget package which lets you run in either console mode or nt service mode.
Here's the quickstart guide.
We use it to write services all the time and it helps you avoid this kind of fragile shenanigans.
After I disconnect from the vpn using this code System.Diagnostics.Process.Start("rasdial.exe", "My_VPN /d"); It still shows on the VPN Connection list. How can I remove it from there through my program?
If you want to delete VPN connection you need to delete file "rasphone.pbk" or section with [VPN Name] in this file. The file is INI file with extension PBK.
By default the file located in %APPDATA%\Microsoft\Network\Connections\Pbk\rasphone.pbk
After delete operation you will need to restart "explorer.exe"
You can remove it by using WMI's PS_VpnConnection class.
using System.Management; // need to add a reference to the assembly [System.Management]
public class Program
{
public static void Main()
{
const string WMIScope = "root/Microsoft/Windows/RemoteAccess/Client";
const string WMIClass = "PS_VpnConnection";
using (var cls = new ManagementClass(WMIScope, WMIClass, null))
using (var methodParams = cls.GetMethodParameters("Remove"))
{
methodParams["Name"] = new[]{"your_vpn_name"};
methodParams["Force"] = true;
cls.InvokeMethod("Remove", methodParams, null);
}
}
}
I have a db4o database that was generate by a Java app and I'm trying to read it using a C# app.
However, when running the following line of code:
IObjectContainer db = Db4oEmbedded.OpenFile(#"..\..\..\Databases\people.db4o");
I get the following error:
Unable to cast object of type
'Db4objects.Db4o.Reflect.Generic.GenericObject' to type
'Db4objects.Db4o.Ext.Db4oDatabase'.
Any ideas? I know there are person objects that contain personId fields (along with others) in the DB. I'm using db4o version 8. I'm not sure what version was used to generate the database.
The entire program is:
using System;
using System.Collections.Generic;
using System.Linq;
using Db4objects.Db4o;
using Db4objects.Db4o.Config;
using MyCompany.Domain;
namespace MyCompany.Anonymizer
{
internal class Program
{
// Private methods.
private static IEmbeddedConfiguration ConfigureAlias()
{
IEmbeddedConfiguration configuration = Db4oEmbedded.NewConfiguration();
configuration.Common.AddAlias(new TypeAlias("com.theircompany.Person", "MyCompany.Domain.Person, MyCompany.Domain"));
configuration.Common.Add(new JavaSupport());
return configuration;
}
private static void Main(string[] args)
{
IObjectContainer db = Db4oEmbedded.OpenFile(#"..\..\..\Databases\people.db4o");
try
{
IList<Person> result = db.Query<Person>();
for (int i = 0; i < result.Count; i++)
{
Person person = result[i];
Console.WriteLine(string.Format("Person ID: {0}", person.personId));
}
}
finally
{
db.Close();
}
}
}
}
The most common scenario in which this exception is thrown is when db4o fails to resolve the type of a stored object.
In your case, db4o is failing to read one of its internal objects which makes me believe you have not passed the configuration to the OpenFile() method (surely, the code you have posted is not calling ConfigureAlias() method);
Keep in mind that as of version 8.0 no further improvement will be done regarding cross platform support (you can read more details here).
Im trying to set the certificate friendly name during the certificate request/acceptance process. I understand that this a property of the microsoft store rather than the certificate and an wondering what .net/c# technique might be used to set it.
Use X509Certificate2.FriendlyName. However, you must export the certificate as PFX/PKCS#12:
X509Certificate2 certificate = new X509Certificate2(...);
certificate.FriendlyName = "MyName";
File.WriteAllBytes(path, certificate.Export(X509ContentType.Pkcs12));
So here is a commmand line example of how to do this. You need CAPICOM from microsoft which wraps the CryptoAPI.
The friendly name is a property of the cert store rather than the certificate so this code imports a certificate to the cert store and sets the friendly name as it does so.
The code takes two parameters the path to the cert file and the friendly name you wish to set.
Code:-
using System;
using System.Collections.Generic;
using System.Text;
using CAPICOM;
using System.Collections;
using System.Runtime.InteropServices;
namespace CertTool
{
class Program
{
const uint CERT_SYSTEM_STORE_LOCAL_MACHINE = 0x20000;
const int CAPICOM_PROPID_FRIENDLY_NAME = 11;
const int CAPICOM_ENCODE_BINARY = 1;
static private String _currStoreName = "My";
static private String _FriendlyName = "Not Set";
static private String _CertPath = "C:\\test.cer";
static StoreClass _oCurrStore;
static ExtendedPropertyClass _friendlyProp;
static CertificateClass _certificate;
static ExtendedProperties _extendedProp;
static void Main(string[] args)
{
try
{
//Friendly name Argument
if (args.Length > 0)
{
_FriendlyName = args[0];
}
//Certpath argument
if (args.Length > 1)
{
_CertPath = args[1];
}
//Set and open the Store
_oCurrStore = new StoreClass();
_oCurrStore.Open(
CAPICOM_STORE_LOCATION.CAPICOM_LOCAL_MACHINE_STORE,
_currStoreName,
CAPICOM_STORE_OPEN_MODE.CAPICOM_STORE_OPEN_EXISTING_ONLY |
CAPICOM_STORE_OPEN_MODE.CAPICOM_STORE_OPEN_MAXIMUM_ALLOWED);
//Call the import certificate function
importCert();
}
catch(Exception ex){
Console.WriteLine(ex.Message);
Console.WriteLine(args[0]);
}
}
//Function import the certificate to the machine store and sets the friendly name
static bool importCert()
{
try
{
//Create Certificate Object
_certificate = new CertificateClass();
//Load the certificate into the obejct from file
_certificate.Load(_CertPath, "", CAPICOM_KEY_STORAGE_FLAG.CAPICOM_KEY_STORAGE_EXPORTABLE, CAPICOM_KEY_LOCATION.CAPICOM_LOCAL_MACHINE_KEY);
//Create extended property Class for friendly name
_friendlyProp = new ExtendedPropertyClass();
_friendlyProp.PropID = CAPICOM_PROPID.CAPICOM_PROPID_FRIENDLY_NAME;
_friendlyProp.set_Value(CAPICOM_ENCODING_TYPE.CAPICOM_ENCODE_BINARY, _FriendlyName);
//Add extendedProp on cert object
_extendedProp = _certificate.ExtendedProperties();
//Set extendded prop to friendly name object
_extendedProp.Add(_friendlyProp);
_oCurrStore.Add(_certificate);
return true;
}
catch (Exception e)
{
Console.WriteLine(e.Message);
Console.WriteLine(_CertPath);
return true;
}
}
}
}
Ok, found an answer to that here:
Hi,
Please have a look at this to check if it suits your need:
When you run the .net Code in X64 Environment you will get the following error message.
" Failed --Retrieving the COM class factory for component with CLSID ...."
E.g. in CMS Export / Import server side .net code = "ExportSiteContentIncremental(...) Failed --Retrieving the COM class factory for component with CLSID {CA0752B3-021C-4F99-82E3-2C0F19C5E953} failed due to the following error: 80040154."
WORKAROUND:
The possible workaround is modify your project's platform from 'Any CPU' to 'X86' (in Project's Properties, Build/Platform's Target)
ROOTCAUSE
The VSS Interop is a managed assembly using 32-bit Framework and the dll contains a 32-bit COM object. If you run this COM dll in 64 bit environment, you will get the error message.