SASL_CLIENT_STEP(3) Cyrus SASL SASL_CLIENT_STEP(3)
NAME
sasl_client_step - Cyrus SASL documentation
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
int sasl_client_step(sasl_conn_t *conn,
const char *serverin,
unsigned serverinlen,
sasl_interact_t ** prompt_need,
const char ** clientout,
unsigned * clientoutlen);
sasl_client_step() performs a step in the authentication nego-
tiation. It returns SASL_OK if the whole negotiation is suc-
cessful and SASL_CONTINUE if this step is ok but at least one
more step is needed. A client should not assume an authentica-
tion negotiation is successful just because the server sig-
naled 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).
Parameters
• 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 – 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)
nec- essary needs to be done by the client.
• clientoutlen – length of clientout.
RETURN VALUE
SASL callback functions should return SASL return codes. See sasl.h
for a complete list. SASL_CONTINUE indicates success and that there are
more steps needed in the authentication. SASL_OK indicates that the au-
thentication is complete.
Other return codes indicate errors and should either be handled or the
authentication session should be quit.
SEE ALSO
RFC 4422,:saslman:sasl(3), sasl_callbacks(3), sasl_client_init(3),
sasl_client_new(3), sasl_client_start(3), sasl_errors(3)
AUTHOR
The Cyrus Team
COPYRIGHT
1993-2022, The Cyrus Team
2.1.28 2022-11-22 SASL_CLIENT_STEP(3)
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