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sasl_client_step(10 July 2001) sasl_client_step(10 July 2001)
sasl_client_step - Perform a step in the authentication negotiation
int sasl_client_step(sasl_conn_t *conn,
const char *serverin,
sasl_interact_t ** prompt_need,
const char ** clientout,
unsigned * clientoutlen);
sasl_client_step() performs a step in the authentication negotiation. It returns SASL_OK
if the whole negotiation is sucessful 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
sucessful 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 applica-
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 proto-
cal specific encoding (such as base64 encoding) necessary needs to be done by the client.
sasl_client_step returns an integer which corresponds to one of the following codes.
SASL_CONTINUE indicates sucess 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.
sasl(3), sasl_callbacks(3), sasl_errors(3), sasl_client_init(3), sasl_client_new(3),
SASL man pages SASL sasl_client_step(10 July 2001)
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