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+.\" $Id: kpasswdd.8,v 1.2 1999/04/19 16:32:01 joda Exp $
+.\"
+.Dd April 19, 1999
+.Dt KPASSWDD 8
+.Os HEIMDAL
+.Sh NAME
+.Nm kpasswdd
+.Nd
+Kerberos 5 password changing server
+.Sh SYNOPSIS
+.Nm
+.Op Fl -check-library= Ns Ar library
+.Op Fl -check-function= Ns Ar function
+.Sh DESCRIPTION
+.Nm
+serves request for password changes. It listens on UDP port 464
+(service kpasswd) and processes requests when they arrive. It changes
+the database directly and should thus only run on the master KDC.
+.Pp
+Supported options:
+.Bl -tag -width Ds
+.It Xo
+.Fl -check-library= Ns Ar library
+.Xc
+If your system has support for dynamic loading of shared libraries,
+you can use an external function to check password quality. This
+option specifies which library to load.
+.It Xo
+.Fl -check-function= Ns Ar function
+.Xc
+This is the function to call in the loaded library. The function
+should look like this:
+.Pp
+.Ft const char *
+.Fn passwd_check "krb5_context context" "krb5_principal principal" "krb5_data *password"
+.Pp
+.Fa context
+is an initialized context;
+.Fa principal
+is the one who tries to change passwords, and
+.Fa password
+is the new password. Note that the password (in
+.Fa password->data )
+is not zero terminated.
+.El
+.Sh DIAGNOSTICS
+If an error occurs, the error message is returned to the user and/or
+logged to syslog.
+.Sh BUGS
+The default password quality checks are too basic.
+.Sh SEE ALSO
+.Xr kdc 8 ,
+.Xr kpasswd 1
+.\".Sh ENVIRONMENT
+.\".Sh FILES
+.\".Sh EXAMPLES
+.\".Sh SEE ALSO
+.\".Sh STANDARDS
+.\".Sh HISTORY
+.\".Sh AUTHORS