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SIP Stack with SIP Proxy - (VOIP)

, 11 Jun 2007 CPOL 686.3K 20.7K 156
C# implementation of SIP
SIP_Proxy_demo.zip
SIP_Proxy_demo
SIP_Proxy_demo.suo
SIP_Proxy_demo
bin
Debug
LumiSoft.Net.dll
SIP_Proxy_demo.exe
SIP_Proxy_demo.vshost.exe
dep
LumiSoft.Net.dll
LumiSoft.Net.pdb
Properties
Settings.settings
Resources
add.ico
app.ico
delete.ico
edit.ico
error.ico
info.ico
refresh.ico
rule.ico
server_running.ico
server_stopped.ico
viewmessages.ico
Stack.zip
Net
docs
dns
dns_records.jpg
dns_records.vsd
Net
_junk
_Obsolete
AUTH
bin
Release
LumiSoft.Net.dll
Data
Dns
Client
FTP
Client
Server
HTTP
Server
ICMP
IMAP
Client
Server
IO
Log
LumiSoft.Net
Mime
vCard
Net.csproj.user
Net.suo
NNTP
Client
POP3
Client
Server
RTP
SDP
ServersCore
SIP
Client
Message
Proxy
Stack
SMTP
Client
Server
STUN
Client
Message
URI
using System;
using System.Collections;

using LumiSoft.Net;

namespace LumiSoft.Net.IMAP.Server
{
	/// <summary>
	/// IMAP search command grouped(parenthesized) search-key collection.
	/// </summary>
	internal class SearchGroup
	{
		private ArrayList m_pSearchKeys = null;

		/// <summary>
		/// Default constructor.
		/// </summary>
		public SearchGroup()
		{
			m_pSearchKeys = new ArrayList();
		}


		#region method Parse

		/// <summary>
		/// Parses search key from current position.
		/// </summary>
		/// <param name="reader"></param>
		public void Parse(StringReader reader)
		{
			//Remove spaces from string start
			reader.ReadToFirstChar();

			if(reader.StartsWith("(")){
				reader = new StringReader(reader.ReadParenthesized().Trim());
			}

			//--- Start parsing search keys --------------//
			while(reader.Available > 0){
				object searchKey = ParseSearchKey(reader);
				if(searchKey != null){
					m_pSearchKeys.Add(searchKey);
				}
			}
			//--------------------------------------------//			
		}

		#endregion


		#region method IsHeaderNeeded

		/// <summary>
		/// Gets if message Header is needed for matching.
		/// </summary>
		/// <returns></returns>
		public bool IsHeaderNeeded()
		{
			foreach(object searchKey in m_pSearchKeys){
				if(SearchGroup.IsHeaderNeededForKey(searchKey)){
					return true;
				}
			}

			return false;
		}

		#endregion

		#region method IsBodyTextNeeded

		/// <summary>
		/// Gets if message body text is needed for matching.
		/// </summary>
		/// <returns></returns>
		public bool IsBodyTextNeeded()
		{
			foreach(object searchKey in m_pSearchKeys){
				if(SearchGroup.IsBodyTextNeededForKey(searchKey)){
					return true;
				}
			}

			return false;
		}

		#endregion


		#region static method ParseSearchKey

		/// <summary>
		/// Parses SearchGroup or SearchItem from reader. If reader starts with (, then parses searchGroup, otherwise SearchItem.
		/// </summary>
		/// <param name="reader"></param>
		/// <returns></returns>
		internal static object ParseSearchKey(StringReader reader)
		{
			//Remove spaces from string start
			reader.ReadToFirstChar();

			// SearchGroup
			if(reader.StartsWith("(")){
				SearchGroup searchGroup = new SearchGroup();
				searchGroup.Parse(reader);

				return searchGroup;
			}
			// SearchItem
			else{
				return SearchKey.Parse(reader);
			}
		}

		#endregion

		#region static method Match_Key_Value

		/// <summary>
		/// Gets if specified message matches to specified search key.
		/// </summary>
		/// <param name="searchKey">SearchKey or SearchGroup.</param>
		/// <param name="no">IMAP message sequence number.</param>
		/// <param name="uid">IMAP message UID.</param>
		/// <param name="size">IMAP message size in bytes.</param>
		/// <param name="internalDate">IMAP message INTERNALDATE (dateTime when server stored message).</param>
		/// <param name="flags">IMAP message flags.</param>
		/// <param name="mime">Mime message main header only.</param>
		/// <param name="bodyText">Message body text.</param>
		/// <returns></returns>
		internal static bool Match_Key_Value(object searchKey,long no,long uid,long size,DateTime internalDate,IMAP_MessageFlags flags,LumiSoft.Net.Mime.Mime mime,string bodyText)
		{
			if(searchKey.GetType() == typeof(SearchKey)){
				if(!((SearchKey)searchKey).Match(no,uid,size,internalDate,flags,mime,bodyText)){
					return false;
				}
			}
			else if(searchKey.GetType() == typeof(SearchGroup)){
				if(!((SearchGroup)searchKey).Match(no,uid,size,internalDate,flags,mime,bodyText)){
					return false;
				}
			}

			return true;
		}

		#endregion


		#region static method IsHeaderNeededForKey

		/// <summary>
		/// Gets if message header is needed for matching.
		/// </summary>
		/// <param name="searchKey"></param>
		/// <returns></returns>
		internal static bool IsHeaderNeededForKey(object searchKey)
		{
			if(searchKey.GetType() == typeof(SearchKey)){
				if(((SearchKey)searchKey).IsHeaderNeeded()){
					return true;
				}
			}
			else if(searchKey.GetType() == typeof(SearchGroup)){
				if(((SearchGroup)searchKey).IsHeaderNeeded()){
					return true;
				}
			}

			return false;
		}

		#endregion

		#region static method IsBodyTextNeededForKey

		/// <summary>
		/// Gets if message body text is needed for matching.
		/// </summary>
		/// <param name="searchKey"></param>
		/// <returns></returns>
		internal static bool IsBodyTextNeededForKey(object searchKey)
		{
			if(searchKey.GetType() == typeof(SearchKey)){
				if(((SearchKey)searchKey).IsBodyTextNeeded()){
					return true;
				}
			}
			else if(searchKey.GetType() == typeof(SearchGroup)){
				if(((SearchGroup)searchKey).IsBodyTextNeeded()){
					return true;
				}
			}

			return false;
		}

		#endregion


		#region method Match

		/// <summary>
		/// Gets if specified message matches with this class search-key.
		/// </summary>
		/// <param name="no">IMAP message sequence number.</param>
		/// <param name="uid">IMAP message UID.</param>
		/// <param name="size">IMAP message size in bytes.</param>
		/// <param name="internalDate">IMAP message INTERNALDATE (dateTime when server stored message).</param>
		/// <param name="flags">IMAP message flags.</param>
		/// <param name="mime">Mime message main header only.</param>
		/// <param name="bodyText">Message body text.</param>
		/// <returns></returns>
		public bool Match(long no,long uid,long size,DateTime internalDate,IMAP_MessageFlags flags,LumiSoft.Net.Mime.Mime mime,string bodyText)
		{
			// We must match all keys, if one fails, no need to check others

			foreach(object searckKey in m_pSearchKeys){
				if(!Match_Key_Value(searckKey,no,uid,size,internalDate,flags,mime,bodyText)){
					return false;
				}
			}

			return true;
		}

		#endregion

	}
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Ivar Lumi
Estonia Estonia
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