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sasl_callbacks(10 July 2001)                                                    sasl_callbacks(10 July 2001)



NAME
       sasl_callbacks - How to work with SASL callbacks


SYNOPSIS
       #include <sasl/sasl.h>


DESCRIPTION
       sasl_callbacks are used when the application needs some information from the application. Common rea-sons reasons
       sons are getting for getting usernames and passwords. A client MUST specify what callbacks they  sup-port support
       port  in the sasl_client/server_init() or sasl_client/server_new() calls. If an authentication mecha-nism mechanism
       nism needs a callback that the application does not state it supports it cannot be used.

       If a callback has an id parameter that should be checked to make sure you are giving the  appropriate
       value.

       If  an  application is using the client side of the library functions to handle the callbacks are not
       necessary.  Instead  the   application   may   deal   with   callbacks   via   SASL_INTERACT's.   See
       sasl_client_start/step() for more information.

       The list of callbacks follows:


Common Callbacks
       sasl_getopt_t
               Get an option value

       sasl_log_t
               Log message handler

       sasl_getpath_t
               Get path to search for mechanisms

       sasl_verifyfile_t
               Verify files for use by SASL

       sasl_canon_user_t
               Username canonicalization function.


Client-only Callbacks
       sasl_getsimple_t
               Get user/language list

       sasl_getsecret_t
               Get authentication secret

       sasl_chalprompt_t
               Display challenge and prompt for response

       sasl_getrealm_t
               Get the realm for authentication


Server-only Callbacks
       sasl_authorize_t
               Authorize policy callback

       sasl_server_userdb_checkpass_t
               verify plaintext password

       sasl_server_userdb_setpass_t
               set plaintext password


RETURN VALUE
       SASL callback functions should return SASL return codes. See sasl.h for a complete list. SASL_OK typ-ically typically
       ically indicates success.


CONFORMING TO
       RFC 2222


SEE ALSO
       sasl(3), sasl_errors(3), sasl_authorize_t(3), sasl_log_t(3), sasl_getpath_t(3), sasl_verifyfile_t(3),
       sasl_canon_user_t(3),       sasl_getsimple(3),       sasl_getsecret_t(3),       sasl_chalprompt_t(3),
       sasl_getrealm_t(3), sasl_authorize_t(3),  sasl_server_userdb_checkpass_t(3),  sasl_server_userdb_set-pass_t(3) sasl_server_userdb_setpass_t(3)
       pass_t(3)



SASL man pages                                      SASL                        sasl_callbacks(10 July 2001)