1: /*

   2: Copyright (c) 2010 <a href="http://www.gutgames.com">James Craig</a>

   3: 

   4: Permission is hereby granted, free of charge, to any person obtaining a copy

   5: of this software and associated documentation files (the "Software"), to deal

   6: in the Software without restriction, including without limitation the rights

   7: to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

   8: copies of the Software, and to permit persons to whom the Software is

   9: furnished to do so, subject to the following conditions:

  10: 

  11: The above copyright notice and this permission notice shall be included in

  12: all copies or substantial portions of the Software.

  13: 

  14: THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

  15: IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

  16: FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

  17: AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

  18: LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

  19: OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

  20: THE SOFTWARE.*/

  21:  

  22: #region Usings

  23: using System;

  24: using System.Collections.Generic;

  25: using System.Net;

  26: using System.Net.Mail;

  27: using System.Text;

  28: #endregion

  29:  

  30:  

  31: namespace Utilities.Exchange

  32: {

  33:     /// <summary>

  34:     /// Utility class for creating and sending an appointment

  35:     /// </summary>

  36:     public class Appointment

  37:     {

  38:         #region Constructor

  39:         /// <summary>

  40:         /// Constructor

  41:         /// </summary>

  42:         public Appointment()

  43:         {

  44:             AttendeeList = new MailAddressCollection();

  45:             Attachments = new List<Attachment>();

  46:         }

  47:         #endregion

  48:  

  49:         #region Public Functions

  50:  

  51:         /// <summary>

  52:         /// Adds an appointment to a user's calendar

  53:         /// </summary>

  54:         public virtual void AddAppointment()

  55:         {

  56:             string XMLNSInfo = "xmlns:g=\"DAV:\" "

  57:                 + "xmlns:e=\"http://schemas.microsoft.com/exchange/\" "

  58:                 + "xmlns:mapi=\"http://schemas.microsoft.com/mapi/\" "

  59:                 + "xmlns:mapit=\"http://schemas.microsoft.com/mapi/proptag/\" "

  60:                 + "xmlns:x=\"xml:\" xmlns:cal=\"urn:schemas:calendar:\" "

  61:                 + "xmlns:dt=\"urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/\" "

  62:                 + "xmlns:header=\"urn:schemas:mailheader:\" "

  63:                 + "xmlns:mail=\"urn:schemas:httpmail:\"";

  64:  

  65:             string CalendarInfo = "<cal:location>" + Location + "</cal:location>"// + Location + "</cal:location>"

  66:                 + "<cal:dtstart dt:dt=\"dateTime.tz\">" + StartDate.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.000Z") + "</cal:dtstart>"// + StartDate.ToUniversalTime().ToString("yyyyMMddTHHmmssZ") + "</cal:dtstart>"

  67:                 + "<cal:dtend dt:dt=\"dateTime.tz\">" + EndDate.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.000Z") + "</cal:dtend>"// + EndDate.ToUniversalTime().ToString("yyyyMMddTHHmmssZ") + "</cal:dtend>"

  68:                 + "<cal:instancetype dt:dt=\"int\">0</cal:instancetype>"

  69:                 + "<cal:busystatus>BUSY</cal:busystatus>"

  70:                 + "<cal:meetingstatus>CONFIRMED</cal:meetingstatus>"

  71:                 + "<cal:alldayevent dt:dt=\"boolean\">0</cal:alldayevent>"

  72:                 + "<cal:responserequested dt:dt=\"boolean\">1</cal:responserequested>"

  73:                 + "<cal:reminderoffset dt:dt=\"int\">900</cal:reminderoffset>"

  74:                 + "<cal:uid>" + MeetingGUID.ToString("B") + "</cal:uid>";

  75:  

  76:             string HeaderInfo = "<header:to>" + AttendeeList.ToString() + "</header:to>";

  77:  

  78:             string MailInfo = "<mail:subject>" + Subject + "</mail:subject>"

  79:                 + "<mail:htmldescription>" + Summary + "</mail:htmldescription>";

  80:  

  81:             string AppointmentRequest = "<?xml version=\"1.0\"?>"

  82:                 + "<g:propertyupdate " + XMLNSInfo + ">"

  83:                 + "<g:set><g:prop>"

  84:                 + "<g:contentclass>urn:content-classes:appointment</g:contentclass>"

  85:                 + "<e:outlookmessageclass>IPM.Appointment</e:outlookmessageclass>"

  86:                 + MailInfo

  87:                 + CalendarInfo

  88:                 + HeaderInfo

  89:                 + "<mapi:finvited dt:dt=\"boolean\">1</mapi:finvited>"

  90:                 + "</g:prop></g:set>"

  91:                 + "</g:propertyupdate>";

  92:  

  93:             System.Net.HttpWebRequest PROPPATCHRequest = (System.Net.HttpWebRequest)HttpWebRequest.Create(ServerName + "/exchange/" + Directory + "/Calendar/" + MeetingGUID.ToString() + ".eml");

  94:  

  95:             System.Net.CredentialCache MyCredentialCache = new System.Net.CredentialCache();

  96:             if (!string.IsNullOrEmpty(UserName) && !string.IsNullOrEmpty(Password))

  97:             {

  98:                 MyCredentialCache.Add(new System.Uri(ServerName + "/exchange/" + Directory + "/Calendar/" + MeetingGUID.ToString() + ".eml"),

  99:                                        "NTLM",

 100:                                        new System.Net.NetworkCredential(UserName, Password));

 101:             }

 102:             else

 103:             {

 104:                 MyCredentialCache.Add(new System.Uri(ServerName + "/exchange/" + Directory + "/Calendar/" + MeetingGUID.ToString() + ".eml"),

 105:                                        "Negotiate",

 106:                                        (System.Net.NetworkCredential)CredentialCache.DefaultCredentials);

 107:             }

 108:  

 109:             PROPPATCHRequest.Credentials = MyCredentialCache;

 110:             PROPPATCHRequest.Method = "PROPPATCH";

 111:             byte[] bytes = Encoding.UTF8.GetBytes((string)AppointmentRequest);

 112:             PROPPATCHRequest.ContentLength = bytes.Length;

 113:             using (System.IO.Stream PROPPATCHRequestStream = PROPPATCHRequest.GetRequestStream())

 114:             {

 115:                 PROPPATCHRequestStream.Write(bytes, 0, bytes.Length);

 116:                 PROPPATCHRequestStream.Close();

 117:                 PROPPATCHRequest.ContentType = "text/xml";

 118:                 System.Net.WebResponse PROPPATCHResponse = (System.Net.HttpWebResponse)PROPPATCHRequest.GetResponse();

 119:                 PROPPATCHResponse.Close();

 120:             }

 121:         }

 122:  

 123:         /// <summary>

 124:         /// Emails an appointment to the specified users

 125:         /// </summary>

 126:         public virtual void EmailAppointment()

 127:         {

 128:             using (MailMessage Mail = new MailMessage())

 129:             {

 130:                 System.Net.Mime.ContentType TextType = new System.Net.Mime.ContentType("text/plain");

 131:                 using (AlternateView TextView = AlternateView.CreateAlternateViewFromString(GetText(), TextType))

 132:                 {

 133:                     System.Net.Mime.ContentType HTMLType = new System.Net.Mime.ContentType("text/html");

 134:                     using (AlternateView HTMLView = AlternateView.CreateAlternateViewFromString(GetHTML(false), HTMLType))

 135:                     {

 136:                         System.Net.Mime.ContentType CalendarType = new System.Net.Mime.ContentType("text/calendar");

 137:                         CalendarType.Parameters.Add("method", "REQUEST");

 138:                         CalendarType.Parameters.Add("name", "meeting.ics");

 139:                         using (AlternateView CalendarView = AlternateView.CreateAlternateViewFromString(GetCalendar(false), CalendarType))

 140:                         {

 141:                             CalendarView.TransferEncoding = System.Net.Mime.TransferEncoding.SevenBit;

 142:  

 143:                             Mail.AlternateViews.Add(TextView);

 144:                             Mail.AlternateViews.Add(HTMLView);

 145:                             Mail.AlternateViews.Add(CalendarView);

 146:  

 147:                             Mail.From = new MailAddress(OrganizerEmail);

 148:  

 149:                             foreach (MailAddress attendee in AttendeeList)

 150:                             {

 151:                                 Mail.To.Add(attendee);

 152:                             }

 153:  

 154:  

 155:                             Mail.Subject = Subject;

 156:  

 157:                             foreach (Attachment Attachment in Attachments)

 158:                             {

 159:                                 Mail.Attachments.Add(Attachment);

 160:                             }

 161:  

 162:  

 163:                             SmtpClient Server = new SmtpClient(ServerName, Port);

 164:                             if (!string.IsNullOrEmpty(UserName) && !string.IsNullOrEmpty(Password))

 165:                             {

 166:                                 Server.Credentials = new System.Net.NetworkCredential(UserName, Password);

 167:                             }

 168:                             if (AttendeeList.Count > 0)

 169:                             {

 170:                                 Server.Send(Mail);

 171:                             }

 172:                         }

 173:                     }

 174:                 }

 175:             }

 176:         }

 177:  

 178:         /// <summary>

 179:         /// Sends a cancellation to the people specified

 180:         /// </summary>

 181:         public virtual void SendCancelEmails()

 182:         {

 183:             using (MailMessage Mail = new MailMessage())

 184:             {

 185:                 System.Net.Mime.ContentType TextType = new System.Net.Mime.ContentType("text/plain");

 186:                 using (AlternateView TextView = AlternateView.CreateAlternateViewFromString(GetText(), TextType))

 187:                 {

 188:                     System.Net.Mime.ContentType HTMLType = new System.Net.Mime.ContentType("text/html");

 189:                     using (AlternateView HTMLView = AlternateView.CreateAlternateViewFromString(GetHTML(true), HTMLType))

 190:                     {

 191:                         System.Net.Mime.ContentType CalendarType = new System.Net.Mime.ContentType("text/calendar");

 192:                         CalendarType.Parameters.Add("method", "CANCEL");

 193:                         CalendarType.Parameters.Add("name", "meeting.ics");

 194:                         using (AlternateView CalendarView = AlternateView.CreateAlternateViewFromString(GetCalendar(true), CalendarType))

 195:                         {

 196:                             CalendarView.TransferEncoding = System.Net.Mime.TransferEncoding.SevenBit;

 197:  

 198:                             Mail.AlternateViews.Add(TextView);

 199:                             Mail.AlternateViews.Add(HTMLView);

 200:                             Mail.AlternateViews.Add(CalendarView);

 201:  

 202:                             Mail.From = new MailAddress(OrganizerEmail);

 203:                             foreach (MailAddress attendee in AttendeeList)

 204:                             {

 205:                                 Mail.To.Add(attendee);

 206:                             }

 207:                             Mail.Subject = Subject + " - Cancelled";

 208:                             foreach (Attachment Attachment in Attachments)

 209:                             {

 210:                                 Mail.Attachments.Add(Attachment);

 211:                             }

 212:                             SmtpClient Server = new SmtpClient(ServerName, Port);

 213:                             if (!string.IsNullOrEmpty(UserName) && !string.IsNullOrEmpty(Password))

 214:                             {

 215:                                 Server.Credentials = new System.Net.NetworkCredential(UserName, Password);

 216:                             }

 217:                             if (AttendeeList.Count > 0)

 218:                             {

 219:                                 Server.Send(Mail);

 220:                             }

 221:                         }

 222:                     }

 223:                 }

 224:             }

 225:         }

 226:  

 227:         /// <summary>

 228:         /// Cancels an appointment on someone's calendar

 229:         /// </summary>

 230:         public virtual void CancelAppointment()

 231:         {

 232:             System.Net.HttpWebRequest PROPPATCHRequest = (System.Net.HttpWebRequest)HttpWebRequest.Create(ServerName + "/exchange/" + Directory + "/Calendar/" + MeetingGUID.ToString() + ".eml");

 233:  

 234:             System.Net.CredentialCache MyCredentialCache = new System.Net.CredentialCache();

 235:             if (!string.IsNullOrEmpty(UserName) && !string.IsNullOrEmpty(Password))

 236:             {

 237:                 MyCredentialCache.Add(new System.Uri(ServerName + "/exchange/" + Directory + "/Calendar/" + MeetingGUID.ToString() + ".eml"),

 238:                                    "NTLM",

 239:                                    new System.Net.NetworkCredential(UserName, Password));

 240:             }

 241:             else

 242:             {

 243:                 MyCredentialCache.Add(new System.Uri(ServerName + "/exchange/" + Directory + "/Calendar/" + MeetingGUID.ToString() + ".eml"),

 244:                                        "Negotiate",

 245:                                        (System.Net.NetworkCredential)CredentialCache.DefaultCredentials);

 246:             }

 247:  

 248:             PROPPATCHRequest.Credentials = MyCredentialCache;

 249:             PROPPATCHRequest.Method = "DELETE";

 250:             System.Net.WebResponse PROPPATCHResponse = (System.Net.HttpWebResponse)PROPPATCHRequest.GetResponse();

 251:             PROPPATCHResponse.Close();

 252:         }

 253:  

 254:         #endregion

 255:  

 256:         #region Private Functions

 257:  

 258:         /// <summary>

 259:         /// Returns the text version of the appointment

 260:         /// </summary>

 261:         /// <returns>A text version of the appointment</returns>

 262:         private string GetText()

 263:         {

 264:             string Body = "Type:Single Meeting\n" +

 265:                 "Organizer:" + OrganizerName + "\n" +

 266:                 "Start Time:" + StartDate.ToLongDateString() + " " + StartDate.ToLongTimeString() + "\n" +

 267:                 "End Time:" + EndDate.ToLongDateString() + " " + EndDate.ToLongTimeString() + "\n" +

 268:                 "Time Zone:" + System.TimeZone.CurrentTimeZone.StandardName + "\n" +

 269:                 "Location: " + Location + "\n\n" +

 270:                 "*~*~*~*~*~*~*~*~*~*\n\n" +

 271:                 Summary;

 272:             return Body;

 273:         }

 274:  

 275:         /// <summary>

 276:         /// Gets an HTML version of the appointment

 277:         /// </summary>

 278:         /// <param name="Canceled">If true it returns a cancellation, false it returns a request</param>

 279:         /// <returns>An HTML version of the appointment</returns>

 280:         private string GetHTML(bool Canceled)

 281:         {

 282:             string bodyHTML = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2//EN\">\r\n<HTML>\r\n<HEAD>\r\n<META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=utf-8\">\r\n<META NAME=\"Generator\" CONTENT=\"MS Exchange Server version 6.5.7652.24\">\r\n<TITLE>{0}</TITLE>\r\n</HEAD>\r\n<BODY>\r\n<!-- Converted from text/plain format -->\r\n<P><FONT SIZE=2>Type:Single Meeting<BR>\r\nOrganizer:{1}<BR>\r\nStart Time:{2}<BR>\r\nEnd Time:{3}<BR>\r\nTime Zone:{4}<BR>\r\nLocation:{5}<BR>\r\n<BR>\r\n*~*~*~*~*~*~*~*~*~*<BR>\r\n<BR>\r\n{6}<BR>\r\n</FONT>\r\n</P>\r\n\r\n</BODY>\r\n</HTML>";

 283:             string TempSummary = Summary;

 284:             if (Canceled)

 285:             {

 286:                 TempSummary += " - Canceled";

 287:             }

 288:             return string.Format(bodyHTML,

 289:                 TempSummary,

 290:                 OrganizerName,

 291:                 StartDate.ToLongDateString() + " " + StartDate.ToLongTimeString(),

 292:                 EndDate.ToLongDateString() + " " + EndDate.ToLongTimeString(),

 293:                 System.TimeZone.CurrentTimeZone.StandardName,

 294:                 Location,

 295:                 TempSummary);

 296:         }

 297:  

 298:         /// <summary>

 299:         /// Gets an iCalendar version of the appointment

 300:         /// </summary>

 301:         /// <param name="Canceled">If true, it returns a cancellation version.

 302:         /// If false, it returns a request version.</param>

 303:         /// <returns>An iCalendar version of the appointment</returns>

 304:         private string GetCalendar(bool Canceled)

 305:         {

 306:             string DateFormatUsing = "yyyyMMddTHHmmssZ";

 307:             string Method;

 308:             if (!Canceled)

 309:                 Method = "REQUEST";

 310:             else

 311:                 Method = "CANCEL";

 312:             string bodyCalendar = "BEGIN:VCALENDAR\r\nMETHOD:{10}\r\nPRODID:Microsoft CDO for Microsoft Exchange\r\nVERSION:2.0\r\nBEGIN:VTIMEZONE\r\nTZID:(GMT-06.00) Central Time (US & Canada)\r\nX-MICROSOFT-CDO-TZID:11\r\nBEGIN:STANDARD\r\nDTSTART:16010101T020000\r\nTZOFFSETFROM:-0500\r\nTZOFFSETTO:-0600\r\nRRULE:FREQ=YEARLY;WKST=MO;INTERVAL=1;BYMONTH=11;BYDAY=1SU\r\nEND:STANDARD\r\nBEGIN:DAYLIGHT\r\nDTSTART:16010101T020000\r\nTZOFFSETFROM:-0600\r\nTZOFFSETTO:-0500\r\nRRULE:FREQ=YEARLY;WKST=MO;INTERVAL=1;BYMONTH=3;BYDAY=2SU\r\nEND:DAYLIGHT\r\nEND:VTIMEZONE\r\nBEGIN:VEVENT\r\nDTSTAMP:{8}\r\nDTSTART:{0}\r\nSUMMARY:{7}\r\nUID:{5}\r\nATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN=\"{9}\":MAILTO:{9}\r\nACTION;RSVP=TRUE;CN=\"{4}\":MAILTO:{4}\r\nORGANIZER;CN=\"{3}\":mailto:{4}\r\nLOCATION:{2}\r\nDTEND:{1}\r\nDESCRIPTION:{7}\\N\r\nSEQUENCE:1\r\nPRIORITY:5\r\nCLASS:\r\nCREATED:{8}\r\nLAST-MODIFIED:{8}\r\nSTATUS:CONFIRMED\r\nTRANSP:OPAQUE\r\nX-MICROSOFT-CDO-BUSYSTATUS:BUSY\r\nX-MICROSOFT-CDO-INSTTYPE:0\r\nX-MICROSOFT-CDO-INTENDEDSTATUS:BUSY\r\nX-MICROSOFT-CDO-ALLDAYEVENT:FALSE\r\nX-MICROSOFT-CDO-IMPORTANCE:1\r\nX-MICROSOFT-CDO-OWNERAPPTID:-1\r\nX-MICROSOFT-CDO-ATTENDEE-CRITICAL-CHANGE:{8}\r\nX-MICROSOFT-CDO-OWNER-CRITICAL-CHANGE:{8}\r\nBEGIN:VALARM\r\nACTION:DISPLAY\r\nDESCRIPTION:REMINDER\r\nTRIGGER;RELATED=START:-PT00H15M00S\r\nEND:VALARM\r\nEND:VEVENT\r\nEND:VCALENDAR\r\n";

 313:             bodyCalendar = string.Format(bodyCalendar,

 314:                 StartDate.ToUniversalTime().ToString(DateFormatUsing),

 315:                 EndDate.ToUniversalTime().ToString(DateFormatUsing),

 316:                 Location,

 317:                 OrganizerName,

 318:                 OrganizerEmail,

 319:                 MeetingGUID.ToString("B"),

 320:                 Summary,

 321:                 Subject,

 322:                 DateTime.Now.ToUniversalTime().ToString(DateFormatUsing),

 323:                 AttendeeList.ToString(),

 324:                 Method);

 325:             return bodyCalendar;

 326:         }

 327:  

 328:         #endregion

 329:  

 330:         #region Variables

 331:         public DateTime StartDate;

 332:         public DateTime EndDate;

 333:         public string Subject;

 334:         public string Summary;

 335:         public string Location;

 336:         public MailAddressCollection AttendeeList;

 337:         public string OrganizerName;

 338:         public string OrganizerEmail;

 339:  

 340:         public List<Attachment> Attachments;

 341:  

 342:         public Guid MeetingGUID;

 343:  

 344:         public string Directory;

 345:         public string ServerName;

 346:         public string UserName;

 347:         public string Password;

 348:         public int Port;

 349:  

 350:         #endregion

 351:     }

 352: }