I have to develop a .Net application in which i have to add or remove a user from Mailman mailing list.My Question is whether there is any .Net connector or Dll to connect to mailman mailing list using .Net.
Edit (9/21/14): I have just released a NuGet package for manipulating most aspects of a Mailman v2 list via HTTP calls. https://www.nuget.org/packages/MailmanSharp/
I'm not aware of any existing component to do this, but since the Mailman interface is all on the web, you can "control" it with HttpWebRequest; I recently wrote a small app which can retrieve the subscriber list, subscribe/unsubscribe people, and set individual flags like moderate/nomail/etc. It takes a little poking around in the source of the Mailman pages to see what variables need to be set in the POST, and some trial and error. I suggest setting up a temp Mailman list just to play with.
In order to do most of this, you'll need a persistent CookieContainer that you can hook up to your different HttpWebRequests; the first call is a POST to the admin page with the admin password to set the session cookie that gives you access to the other pages.
Some of the POSTs are regular application/x-www-form-urlencoded types, but some are also multipart/form-data. For the latter, I found some very helpful code at http://www.briangrinstead.com/blog/multipart-form-post-in-c I had to make a couple of changes so that I could pass in my CookieContainer
Here's some sample code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;
using System.Text.RegularExpressions;
using System.Data;
using System.Threading;
namespace UpdateListserv
{
class Program
{
static void Main(string[] args)
{
try
{
File.Delete(_logFilename);
Log(String.Format("Starting: {0}", DateTime.Now));
Login();
var roster = GetSubscribers();
Unsubscribe(roster);
string members = GetMemberEmails();
Subscribe(members);
Unmoderate("[email protected]");
Log("Done");
}
catch(Exception e)
{
Log(e.Message);
}
}
private static void Unmoderate(string email)
{
Log("Unmoderating " + email);
email = email.Replace("@", "%40");
_vars.Clear();
_vars["user"] = email;
_vars[email + "_nomail"] = "off";
_vars[email + "_nodupes"] = "on";
_vars[email + "_plain"] = "on";
_vars[email + "_language"] = "en";
_vars["setmemberopts_btn"] = "Submit Your Changes";
FormUpload.MultipartFormDataPost(_adminUrl + _membersPage, "foobar", _vars, _cookies);
}
private static CookieContainer _cookies = new CookieContainer();
private static string _adminUrl = "http://mylist.com/admin.cgi/listname";
private static string _rosterUrl = "http://mylist.com/roster.cgi/listname";
private static string _pw = "myPassword";
private static string _adminEmail = "[email protected]";
private static Dictionary<string, object> _vars = new Dictionary<string, object>();
private static string _addPage = "/members/add";
private static string _removePage = "/members/remove";
private static string _membersPage = "/members";
private static string _logFilename = "Update Listserv.log";
private static void Log(string message)
{
Console.WriteLine(message);
using (var log = File.AppendText(_logFilename))
log.WriteLine(message);
}
private static void Subscribe(string members)
{
// members is a list of email addresses separated by \n
Log("Subscribing everyone");
_vars.Clear();
_vars["subscribees"] = members;
_vars["subscribe_or_invite"] = 0;
_vars["send_welcome_msg_to_this_batch"] = 0;
_vars["send_notifications_to_list_owner"] = 0;
FormUpload.MultipartFormDataPost(_adminUrl + _addPage, "foobar", _vars, _cookies);
}
private static string GetMemberEmails()
{
// This method retrieves a list of emails to be
// subscribed from an external source
// and returns them as a string with \n in between.
}
private static void Unsubscribe(string roster)
{
// roster is a list of email addresses separated by \n
Log("Unsubscribing everybody");
_vars.Clear();
_vars["unsubscribees"] = roster;
_vars["send_unsub_ack_to_this_batch"] = 0;
_vars["send_unsub_notifications_to_list_owner"] = 0;
FormUpload.MultipartFormDataPost(_adminUrl + _removePage, "foobar", _vars, _cookies);
}
private static string GetSubscribers()
{
// returns a list of email addresses subscribed to the list,
// separated by \n
Log("Getting subscriber list");
var req = GetWebRequest(_rosterUrl);
req.Method = "post";
_vars.Clear();
_vars["roster-email"] = _adminEmail;
_vars["roster-pw"] = _pw;
var rosterLines = GetResponseString(req).Split('\n').Where(l => l.StartsWith("<li>"));
Log(String.Format("Got {0} subscribers", rosterLines.Count()));
var roster = new List<string>();
var regex = new Regex("<a.*>(.*)</a>");
foreach (var line in rosterLines)
{
roster.Add(regex.Match(line).Groups[1].Value.Replace(" at ", "@"));
}
return String.Join("\n", roster);
}
private static void Login()
{
Log("Logging in to list admin panel");
var req = GetWebRequest(_adminUrl);
req.Method = "post";
_vars["adminpw"] = _pw;
SetPostVars(req);
req.GetResponse();
}
private static HttpWebRequest GetWebRequest(string url)
{
var result = HttpWebRequest.Create(url) as HttpWebRequest;
result.AllowAutoRedirect = true;
result.CookieContainer = _cookies;
result.ContentType = "application/x-www-form-urlencoded";
return result;
}
private static string GetResponseString(HttpWebRequest req)
{
using (var res = req.GetResponse())
using (var stream = res.GetResponseStream())
using (var sr = new StreamReader(stream))
{
return sr.ReadToEnd();
}
}
private static void SetPostVars(HttpWebRequest req)
{
var list = _vars.Select(v => String.Format("{0}={1}", v.Key, v.Value));
using (var stream = req.GetRequestStream())
using (var writer = new StreamWriter(stream))
{
writer.Write(String.Join("&", list));
}
}
}
}