NAME

       sasl_callbacks - Cyrus SASL documentation

SYNOPSIS

       #include <sasl/sasl.h>

DESCRIPTION

       sasl_callbacks    are   used   when  the  application  needs  some  information  from  the
       application. Common reasons are  getting for  getting  usernames and passwords.  A  client
       MUST  specify    what    callbacks     they     support    in    the sasl_client_init(3)/‐
       sasl_server_init(3) or   sasl_client_new(3)/sasl_server_new(3) calls. If an authentication
       mechanism   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(3)/sasl_client_step(3)    for    more
       information.

   Common Callbacks
       sasl_getopt_t
              Get an option value

       sasl_log_t
              Log message handler

       sasl_getpath_t
              Get  path  to search for plugins (e.g. SASL mechanisms)

       sasl_verifyfile_t
              Verify files for use by SASL

       sasl_canon_user_t(3)
              Username canonicalization function

   Client-only Callbacks
       sasl_getsimple_t
              Get user/language list

       sasl_getsecret_t
              Get authentication secret

       sasl_chalprompt_t(3)
              Display challenge and prompt for response

       sasl_getrealm_t
              Get the realm for authentication

   Server-only Callbacks
       sasl_authorize_t(3)
              Authorize policy callback

       sasl_server_userdb_checkpass_t
              verify plaintext password

       sasl_server_userdb_setpass_t
              set plaintext password

       sasl_getconfpath_t
              Get path to search  for  SASL  configuration  file (server side only). New in  SASL
              2.1.22.

RETURN VALUE

       SASL   callback   functions  should  return  SASL  return codes.  See sasl_errors(3) for a
       complete list.  SASL_OK  typically  indicates success.

CONFORMING TO

       RFC 4422

SEE ALSO

       sasl(3),   sasl_errors(3),    sasl_authorize_t(3),    sasl_log_t(3),    sasl_getpath_t(3),
       sasl_getconfpath_t(3),  sasl_verifyfile_t(3),  sasl_canon_user_t(3),  sasl_getsimple_t(3),
       sasl_getsecret_t(3),               sasl_chalprompt_t(3),               sasl_getrealm_t(3),
       sasl_server_userdb_checkpass_t(3), sasl_server_userdb_setpass_t(3)

AUTHOR

       The Cyrus Team

COPYRIGHT

       1993-2023, The Cyrus Team