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Man Pages


Manual Reference Pages  -  SASL_CLIENT_STEP (3)

NAME

sasl_client_step - Perform a step in the authentication negotiation

CONTENTS

Synopsis
Description

SYNOPSIS


#include <sasl/sasl.h> 

int sasl_client_step(sasl_conn_t *conn,                  const char                  unsigned                  sasl_interact_t **                  const char **                  unsigned *

DESCRIPTION

sasl_client_step() performs a step in the authentication negotiation. It returns SASL_OK if the whole negotiation is successful and SASL_CONTINUE if this step is ok but at least one more step is needed. A client should not assume an authentication negotiation is successful just because 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 parameter will be the same pointer as before but filled in by the application).

conn is the SASL connection context

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

serverinlen is the length of serverin

clientout and clientoutlen is created. It is the initial client response 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 authentication 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)
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SASL SASL_CLIENT_STEP (3) 10 July 2001

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