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sasl_client_step(3)

sasl_client_step(3)             SASL man pages             sasl_client_step(3)

NAME
       sasl_client_step - Perform a step in the authentication negotiation



SYNOPSIS
       #include <sasl/sasl.h>

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


DESCRIPTION
       sasl_client_step()  performs  a step in the authentication negotiation.
       It returns SASL_OK if the whole negotiation is successful and SASL_CON‐
       TINUE if this step is ok but at least one more step is needed. A client
       should not assume an authentication negotiation is successful just  be‐
       cause the server signaled success via protocol (i.e. if the server said
       ".  OK  Authentication succeeded" in IMAP sasl_client_step should still
       be called one more time with a serverinlen of zero.

       If SASL_INTERACT is returned the library needs some values to be filled
       in before it can proceed. The prompt_need structure will be  filled  in
       with  requests.  The application should fulfill these requests and call
       sasl_client_start again with identical parameters (the prompt_need  pa‐
       rameter  will be the same pointer as before but filled in by the appli‐
       cation).

       conn is the SASL connection context

       serverin is the data given by the server (decoded if the  protocol  en‐
       codes requests sent over the wire)

       serverinlen is the length of serverin

       clientout  and  clientoutlen  is  created. It is the initial client re‐
       sponse to send to the server. It is the job of the client  to  send  it
       over  the  network to the server.  Any protocol specific encoding (such
       as base64 encoding) necessary needs to be done by the client.


RETURN VALUE
       sasl_client_step returns an integer which corresponds  to  one  of  the
       following  codes.  SASL_CONTINUE  indicates  success and that there are
       more steps needed in the authentication. SASL_OK indicates that the au‐
       thentication is complete. All other return codes  indicate  errors  and
       should either be handled or the authentication session should be quit.


CONFORMING TO
       RFC 4422

SEE ALSO
       sasl(3),    sasl_callbacks(3),   sasl_errors(3),   sasl_client_init(3),
       sasl_client_new(3), sasl_client_start(3)

SASL                             10 July 2001              sasl_client_step(3)
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