1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
.\" Copyright (c) 1997, 2000 - 2005 Kungliga Tekniska Högskolan
.\" (Royal Institute of Technology, Stockholm, Sweden).
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\"
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\"
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" 3. Neither the name of the Institute nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.Dd April 19, 1999
.Dt KPASSWDD 8
.Os HEIMDAL
.Sh NAME
.Nm kpasswdd
.Nd Kerberos 5 password changing server
.Sh SYNOPSIS
.Nm
.Bk -words
.Op Fl Fl addresses= Ns Ar address
.Op Fl Fl check-library= Ns Ar library
.Op Fl Fl check-function= Ns Ar function
.Oo Fl k Ar kspec \*(Ba Xo
.Fl Fl keytab= Ns Ar kspec
.Xc
.Oc
.Oo Fl r Ar realm \*(Ba Xo
.Fl Fl realm= Ns Ar realm
.Xc
.Oc
.Oo Fl p Ar string \*(Ba Xo
.Fl Fl port= Ns Ar string
.Xc
.Oc
.Op Fl Fl version
.Op Fl Fl help
.Ek
.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 Fl Fl addresses= Ns Ar address
For each till the argument is given, add the address to what kpasswdd
should listen too.
.It Fl Fl check-library= Ns Ar library
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 Fl Fl check-function= Ns Ar function
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.
.It Fl k Ar kspec , Fl Fl keytab= Ns Ar kspec
Keytab to get authentication key from.
.It Fl r Ar realm , Fl Fl realm= Ns Ar realm
Default realm.
.It Fl p Ar string , Fl Fl port= Ns Ar string
Port to listen on (default service kpasswd - 464).
.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 kpasswd 1 ,
.Xr kdc 8
.\".Sh ENVIRONMENT
.\".Sh FILES
.\".Sh EXAMPLES
.\".Sh SEE ALSO
.\".Sh STANDARDS
.\".Sh HISTORY
.\".Sh AUTHORS
|
