$Sock_Cert_Levels

Number of levels in partner's certificate

Note: Most Sirius $functions have been deprecated in favor of Object Oriented methods. There is currently no direct OO equivalent for this $function.

$Sock_Cert_Levels retrieves the number of levels of the certificate provided on a socket by the remote partner.

Syntax

%num = $Sock_Cert_Levels(socket)

Syntax terms

%num	The number of levels in the certificate provided by the remote partner.
socket	A string that is the socket identifier.

Usage notes

• For an SSL connection where the client sent a certificate, $Sock_Cert_Levels will return a number greater than 0:
  • Level 0 of a certificate always contains the client information.
  • Level 1 contains the information for the "signer" of the client certificate.
  • Level 2 would contain information for the "signer" of the level 1 signer's certificate, and so on.

  Since all certificates accepted by Janus Network Security must be signed, $Sock_Cert_Levels is always greater than or equal to 2, if non-zero. Level 3 indicates a certificate that includes an intermediate certificate.

  For information on the data that can be retrieved for each certificate level see $Sock_Cert_Info. To learn more about client certificates, see the Janus Network Security Reference Manual.

• $Sock_Cert_Levels returns the value -1 if the socket is not open and ONRESET CONTINUE is in effect for the socket.
• A $Sock_Cert_Levels call may cause an SSL renegotiation in order to request a digital certificate from the client. See this $Sock_Cert_Info usage note.

Example

The following statement returns the number of levels of the certificate received from the partner using the server socket (SRVSOCK):

%count = $Sock_Cert_Levels(1)