sasl_server_start(10 July 2001)		       sasl_server_start(10 July 2001)



NAME
       sasl_server_start - Begin an authentication negotiation



SYNOPSIS
       #include <sasl/sasl.h>

       int sasl_server_start(sasl_conn_t * conn,
			    const char * mech,
			    const char * clientin,
			    unsigned * clientinlen,
			    const char ** serverout,
			    unsigned * serveroutlen);

DESCRIPTION
       sasl_server_start() begins the authentication with the mechanism speci-
       fied with mech. This fails if the mechanism is not  supported.  SASL_OK
       is returned if the authentication is complete and the user is authenti-
       cated. SASL_CONTINUE is	returned  if  one  or  more  steps  are	 still
       required	 in the authentication. All other return values indicate fail-
       ure.


       conn is the SASL context for this connection

       mech is the mechanism name that the client requested

       clientin is the client initial response, NULL  if  the  protocol	 lacks
       support	for client-send-first or if the other end did not have an ini-
       tial send.  Note that no initial client send is distinct from  an  ini-
       tial send of a null string, and the protocol MUST account for this dif-
       ference.


       clientinlen is the length of initial response

       serverout is created by the plugin library. It is  the  initial	server
       response	 to send to the client. This is allocated/freed by the library
       and it is the job of the client to send it  over	 the  network  to  the
       server.	Also protocol specific encoding (such as base64 encoding) must
       needs to be done by the server.

       serveroutlen is set to the length of initial server challenge

RETURN VALUE
       sasl_server_start returns an integer which corresponds to  one  of  the
       SASL  errorcodes.  SASL_OK  indicates  that authentication is completed
       successfully. SASL_CONTINUE indicates success and that there  are  more
       steps  needed  in  the  authentication. All other return codes indicate
       errors and should either	 be  handled  or  the  authentication  session
       should be quit.


CONFORMING TO
       RFC 2222

SEE ALSO
       sasl(3),	  sasl_errors(3),   sasl_server_init(3),   sasl_server_new(3),
       sasl_server_step(3)



SASL man pages			     SASL      sasl_server_start(10 July 2001)