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using System;
using System.Collections.Generic;
using System.Text;
namespace LumiSoft.Net.SIP.Message
{
/// <summary>
/// Implements SIP "challenge" value. Defined in RFC 3261.
/// </summary>
/// <remarks>
/// <code>
/// RFC 3261 Syntax:
/// challenge = ("Digest" LWS digest-cln *(COMMA digest-cln)) / other-challenge
/// </code>
/// </remarks>
public class SIP_t_Challenge : SIP_t_Value
{
private string m_Method = "";
private string m_AuthData = "";
/// <summary>
/// Default constructor.
/// </summary>
/// <param name="value">SIP challenge value.</param>
public SIP_t_Challenge(string value)
{
Parse(new StringReader(value));
}
#region method Parse
/// <summary>
/// Parses "challenge" from specified value.
/// </summary>
/// <param name="value">SIP "challenge" value.</param>
/// <exception cref="ArgumentNullException">Raised when <b>value</b> is null.</exception>
/// <exception cref="SIP_ParseException">Raised when invalid SIP message.</exception>
public void Parse(string value)
{
if(value == null){
throw new ArgumentNullException("value");
}
Parse(new StringReader(value));
}
/// <summary>
/// Parses "challenge" from specified reader.
/// </summary>
/// <param name="reader">Reader what contains challenge value.</param>
/// <exception cref="ArgumentNullException">Raised when <b>reader</b> is null.</exception>
/// <exception cref="SIP_ParseException">Raised when invalid SIP message.</exception>
public override void Parse(StringReader reader)
{
// challenge = ("Digest" LWS digest-cln *(COMMA digest-cln)) / other-challenge
if(reader == null){
throw new ArgumentNullException("reader");
}
// Get authentication method
string word = reader.ReadWord();
if(word == null){
throw new SIP_ParseException("Invalid WWW-Authenticate: value, authentication method is missing !");
}
m_Method = word;
// Get authentication data
word = reader.ReadToEnd();
if(word == null){
throw new SIP_ParseException("Invalid WWW-Authenticate: value, authentication parameters are missing !");
}
m_AuthData = word.Trim();
}
#endregion
#region method ToStringValue
/// <summary>
/// Converts this to valid "challenge" value.
/// </summary>
/// <returns>Returns "challenge" value.</returns>
public override string ToStringValue()
{
return m_Method + " " + m_AuthData;
}
#endregion
#region Properties Implementation
/// <summary>
/// Gets or sets authentication method. Normally this value is always 'Digest'.
/// </summary>
public string Method
{
get{ return m_Method; }
set{
if(string.IsNullOrEmpty(value)){
throw new ArgumentException("Property Method value cant be null or mepty !");
}
m_Method = value;
}
}
/// <summary>
/// Gets or sets authentication data. That value depends on authentication type.
/// </summary>
public string AuthData
{
get{ return m_AuthData; }
set{
if(string.IsNullOrEmpty(value)){
throw new ArgumentException("Property AuthData value cant be null or mepty !");
}
m_AuthData = value;
}
}
#endregion
}
}
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