public void Add(SipUri uri, string authenticationUserName)
{
// using unique user names.
var reg = new Registration();
reg.Uri = uri;
_authenticationIndex.Add(authenticationUserName, reg);
_registrations.Add(uri.ToString(), reg);
}
/// <summary>
/// Update all contacts (registration bindings) for a user.
/// </summary>
/// <param name="context"></param>
/// <param name="registration"></param>
/// <returns></returns>
/// <remarks>
/// Should be done after a successful authentication.
/// </remarks>
private List<RegistrationContact> UpdateContacts(RequestContext context, Registration registration)
{
var contactHeader = context.Request.Headers[ContactHeader.LNAME] as ContactHeader;
if (contactHeader == null)
{
_logger.Warning("Contact header was not specified.");
context.Response.ReasonPhrase = "Missing/Invalid contact header.";
context.Response.StatusCode = StatusCode.BadRequest;
return null;
}
var newContacts = new List<RegistrationContact>();
foreach (Contact contact in contactHeader.Contacts)
{
int expires = MinExpires;
if (contact.Parameters.Contains("expires"))
{
if (!int.TryParse(contact.Parameters["expires"], out expires))
{
_logger.Warning("Invalid expires value: " + contact.Parameters["expires"]);
context.Response.ReasonPhrase = "Invalid expires value on contact header.";
context.Response.StatusCode = StatusCode.BadRequest;
return null;
}
if (expires > 0 && expires < MinExpires)
{
_logger.Warning("Too small expires value: " + expires);
context.Response.ReasonPhrase = "Increase expires value.";
context.Response.StatusCode = StatusCode.IntervalTooBrief;
context.Response.Headers.Add("MinExpires", new NumericHeader("MinExpires", MinExpires));
return null;
}
}
RegistrationContact oldContact = registration.Find(contact.Uri);
if (oldContact != null && oldContact.CallId == context.Request.CallId
&& context.Request.CSeq.Number < oldContact.SequenceNumber)
{
context.Response.StatusCode = StatusCode.BadRequest;
context.Response.ReasonPhrase = "CSeq value in contact is out of order.";
return null;
}
// Add new contact
newContacts.Add(new RegistrationContact(contact.Name, contact.Uri)
{
CallId = context.Request.CallId,
Expires = expires,
ExpiresAt = DateTime.Now.AddSeconds(expires),
Quality = context.Request.Contact.Quality,
SequenceNumber = context.Request.CSeq.Number,
UpdatedAt = DateTime.Now,
});
}
// Now replace contacts.
// We do it in two steps since no contacts should be updated
// if someone fails.
_repository.UpdateContacts(registration, newContacts);
return newContacts;
}
/// <summary>
/// Update all contacts in a registration.
/// </summary>
/// <param name="registration"></param>
/// <param name="contacts"></param>
/// <exception cref="InvalidOperationException"></exception>
public void UpdateContacts(Registration registration, IEnumerable<RegistrationContact> contacts)
{
registration.ReplaceContacts(contacts);
}
/// <summary>
/// Update uri used when registering.
/// </summary>
/// <param name="uri"></param>
/// <remarks>
/// User might use a different domain than the one
/// added to the database. Update it so that we can find the user.
/// </remarks>
public void UpdateUri(Registration registration, SipUri uri)
{
if (uri.Equals(registration.Uri))
return;
_registrations.Add(uri.ToString(), registration);
_registrations.Remove(registration.Uri.ToString());
registration.Uri = uri;
}
