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.TH "SASL_CALLBACKS" "3" "2022-02-22" "2.1.28" "Cyrus SASL"
.SH NAME
sasl_callbacks \- Cyrus SASL documentation
.SH SYNOPSIS
.sp
.nf
#include <sasl/sasl.h>
.fi
.SH DESCRIPTION
.sp
\fBsasl_callbacks\fP  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.
.sp
If a callback has an id parameter that should  be  checked
to make sure you are giving the appropriate value.
.sp
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.
.SS Common Callbacks
.INDENT 0.0
.TP
.B sasl_getopt_t
Get an option value
.TP
.B sasl_log_t
Log message handler
.TP
.B sasl_getpath_t
Get  path  to search for plugins (e.g. SASL mechanisms)
.TP
.B sasl_verifyfile_t
Verify files for use by SASL
.TP
.B sasl_canon_user_t(3)
Username canonicalization function
.UNINDENT
.SS Client\-only Callbacks
.INDENT 0.0
.TP
.B sasl_getsimple_t
Get user/language list
.TP
.B sasl_getsecret_t
Get authentication secret
.TP
.B sasl_chalprompt_t(3)
Display challenge and prompt for response
.TP
.B sasl_getrealm_t
Get the realm for authentication
.UNINDENT
.SS Server\-only Callbacks
.INDENT 0.0
.TP
.B sasl_authorize_t(3)
Authorize policy callback
.TP
.B sasl_server_userdb_checkpass_t
verify plaintext password
.TP
.B sasl_server_userdb_setpass_t
set plaintext password
.TP
.B sasl_getconfpath_t
Get path to search  for  SASL  configuration  file
(server side only). New in SASL 2.1.22.
.UNINDENT
.SH RETURN VALUE
.sp
SASL  callback  functions should return SASL return codes.
See sasl_errors(3) for a complete list.  \fBSASL_OK\fP  typically  indicates success.
.SH CONFORMING TO
.sp
\fI\%RFC 4422\fP
.SH SEE ALSO
.sp
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)
.SH AUTHOR
The Cyrus Team
.SH COPYRIGHT
1993-2022, The Cyrus Team
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