sasl_client_step(3SASL) 		      Simple Authentication Security Layer Library Functions			   sasl_client_step(3SASL)

NAME

       sasl_client_step - acquire an auxiliary property context

SYNOPSIS

       cc [ flag ... ] file ... -lsasl	 [ library ... ]
       #include <sasl/sasl.h>

       int sasl_client_step(sasl_conn_t *conn, const char *serverin,
	    sasl_interact_t **unsigned serverinlen, prompt_need,
	    const char **clientout, sasl_interact_t **unsigned *clientoutlen);

DESCRIPTION

       Use  the sasl_client_step() interface performs a step in the authentication negotiation. sasl_client_step() returns SASL_OK if the complete
       negotiation is successful. If the negotiation on step is completed successfuly, but at least one more step is required,	sasl_client_step()
       returns	SASL_CONTINUE.	A  client should not assume an authentication negotiaion is successful because the server signaled success through
       the protocol. For example, if the server signaled OK Authentication succeeded in IMAP, sasl_client_step() should be called  one	more  time
       with a serverinlen of zero.

       If  a  call  to	sasl_client_step()  returns  SASL_INTERACT,  the  library  requires some values before sasl_client_step() can proceed. The
       prompt_need structure will be filled with the requests. The application should fulfull these requests  and  call  sasl_client_step()  again
       with  identical	parameters.  The prompt_need parameter will be the same pointer as before, but it will have been filled in by the applica-
       tion.

PARAMETERS

       conn	       The SASL connection context.

       serverin        The data given by the server. The data is decoded if the protocol encodes requests sent over the wire.

       serverinlen     The length of the serverin.

       clientout       clientout and clientoutlen are created. They contain the initial client response to send to the server. It is  the  job	of
       clientoutlen    the client to send them over the network to the server. Any protocol specific encodingthat is necessary, for example base64
		       encoding, must be done by the client.

       prompt_need     A list of prompts that are needed to continue, if necessary.

RETURN VALUES

       sasl_client_step() returns an integer that corresponds to a SASL error code.

ERRORS

       SASL_OK		The call to sasl_client_start() was successful. Authentication is complete.

       SASL_CONTINUE	The call to sasl_client_start() was successful, but at least one more step is required for authentication.

       SASL_INTERACT	The library requires some values before sasl_client_step() can proceed.

       All other  error  codes	indicate  an  error  situation	that  must  be	handled,  or  the  authentication  session  should  be	quit.  See
       sasl_errors(3SASL) for information on SASL error codes.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWlibsasl		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       sasl_errors(3SASL), attributes(5)

SunOS 5.11							    28 Aug 2003 					   sasl_client_step(3SASL)