WebMessage.cs

   1 using System;
   2 using System.Net;
   3 using System.IO;
   4 using System.Web;
   5
   6 namespace OpenStreetMap {
   7
   8         public class WebMessage {
   9                 CookieContainer cookies;
  10                 Exception error;
  11
  12 /*
  13                 static void PrintStream (Stream s)
  14                 {
  15                         StreamReader tr = new StreamReader (s);
  16                         string line;
  17                         while ((line = tr.ReadLine ()) != null) {
  18                                 Console.WriteLine (line);
  19                         }
  20                 }
  21 */
  22
  23                 public Exception Error {
  24                         get {return error;}
  25                 }
  26
  27                 public void Login (string username, string password)
  28                 {
  29                         cookies = new CookieContainer ();
  30                         /* perform the actual login */
  31                         HttpWebRequest req = WebRequest.Create ("http://www.openstreetmap.org/login") as HttpWebRequest;
  32                         req.CookieContainer = cookies;
  33                         req.ServicePoint.Expect100Continue = false;
  34                         req.Method = "POST";
  35                         req.Timeout = 5000;
  36                         req.ContentType = "application/x-www-form-urlencoded";
  37                         req.Referer = "http://www.openstreetmap.org/login";
  38                         req.AllowAutoRedirect = false;
  39                         string data = HttpUtility.UrlEncode ("user[email]") + "=" + HttpUtility.UrlEncode (username) + "&"
  40                                 + HttpUtility.UrlEncode ("user[password]") + "=" + HttpUtility.UrlEncode (password) + "&"
  41                                 + HttpUtility.UrlEncode ("commit") + "=" + HttpUtility.UrlEncode ("Login") + "&"
  42                                 + HttpUtility.UrlEncode ("referer") + "=" + HttpUtility.UrlEncode ("/login");
  43                         StreamWriter logdata = new StreamWriter (req.GetRequestStream());
  44                         logdata.Write (data);
  45                         logdata.Close ();
  46                         HttpWebResponse res = req.GetResponse () as HttpWebResponse;
  47                         Stream s = res.GetResponseStream ();
  48                         //PrintStream (s);
  49                         s.Close ();
  50                 }
  51
  52                 int GetUserID (string user)
  53                 {
  54                         int id = -1;
  55                         HttpWebRequest req = WebRequest.Create (new Uri ("http://www.openstreetmap.org/user/" + user)) as HttpWebRequest;
  56                         req.ServicePoint.Expect100Continue = false;
  57                         // cookies are not needed and this allows getting the id also for the current user
  58                         //req.CookieContainer = cookies;
  59                         req.Timeout = 5000;
  60                         HttpWebResponse res = req.GetResponse () as HttpWebResponse;
  61                         Stream s = res.GetResponseStream ();
  62                         StreamReader tr = new StreamReader (s);
  63                         string line;
  64                         while ((line = tr.ReadLine ()) != null) {
  65                                 if (line.IndexOf ("Description") >= 0)
  66                                         break;
  67                                 int pos = line.IndexOf ("message/new/");
  68                                 if (pos >= 0) {
  69                                         int quotes = line.IndexOf ('"', pos);
  70                                         pos += 12;
  71                                         string sid = line.Substring (pos, quotes - pos);
  72                                         //Console.WriteLine ("User {0} has id: '{1}'", user, sid);
  73                                         id = int.Parse (sid);
  74                                         break;
  75                                 }
  76                         }
  77                         s.Close ();
  78                         return id;
  79                 }
  80
  81                 public bool Send (string user, string subject, string message)
  82                 {
  83                         int id = GetUserID (user);
  84                         return Send (id, subject, message);
  85                 }
  86
  87                 public bool Send (int user, string subject, string message)
  88                 {
  89                         HttpWebRequest req = WebRequest.Create ("http://www.openstreetmap.org/message/new/" + user) as HttpWebRequest;
  90                         req.CookieContainer = cookies;
  91                         req.ServicePoint.Expect100Continue = false;
  92                         req.Method = "POST";
  93                         req.Timeout = 5000;
  94                         req.ContentType = "application/x-www-form-urlencoded";
  95                         req.Referer = "http://www.openstreetmap.org/";
  96                         req.AllowAutoRedirect = false;
  97                         string data = HttpUtility.UrlEncode ("message[title]") + "=" + HttpUtility.UrlEncode (subject) + "&"
  98                                 + HttpUtility.UrlEncode ("message[body]") + "=" + HttpUtility.UrlEncode (message) + "&"
  99                                 + HttpUtility.UrlEncode ("commit") + "=" + HttpUtility.UrlEncode ("Send");
 100                         StreamWriter logdata = new StreamWriter (req.GetRequestStream());
 101                         logdata.Write (data);
 102                         logdata.Close ();
 103                         HttpWebResponse res = req.GetResponse () as HttpWebResponse;
 104                         Stream s = res.GetResponseStream ();
 105                         //PrintStream (s);
 106                         s.Close ();
 107                         return true;
 108                 }
 109
 110         }
 111 }
 112