1 # @(#) Banners.Makefile 1.3 97/02/12 02:13:18
3 # Install this file as the Makefile in your directory with banner files.
4 # It will convert a prototype banner text to a form that is suitable for
5 # the ftp, telnet, rlogin, and other services.
7 # You'll have to comment out the IN definition below if your daemon
8 # names don't start with `in.'.
10 # The prototype text should live in the banners directory, as a file with
11 # the name "prototype". In the prototype text you can use %<character>
12 # sequences as described in the hosts_access.5 manual page (`nroff -man'
13 # format). The sequences will be expanded while the banner message is
14 # sent to the client. For example:
16 # Hello %u@%h, what brings you here?
18 # Expands to: Hello username@hostname, what brings you here? Note: the
19 # use of %u forces a client username lookup.
21 # In order to use banners, build the tcp wrapper with -DPROCESS_OPTIONS
22 # and use hosts.allow rules like this:
24 # daemons ... : clients ... : banners /some/directory ...
26 # Of course, nothing prevents you from using multiple banner directories.
27 # For example, one banner directory for clients that are granted service,
28 # one banner directory for rejected clients, and one banner directory for
29 # clients with a hostname problem.
33 BANNERS = $(IN)telnetd $(IN)ftpd $(IN)rlogind # $(IN)fingerd $(IN)rshd
37 $(IN)telnetd: prototype
42 sed 's/^/220-/' prototype > $@
45 $(IN)rlogind: prototype nul
46 ( ./nul ; cat prototype ) > $@
49 # Other services: banners may interfere with normal operation
50 # so they should probably be used only when refusing service.
51 # In particular, banners don't work with standard rsh daemons.
52 # You would have to use an rshd that has built-in tcp wrapper
53 # support, for example the rshd that is part of the logdaemon
56 $(IN)fingerd: prototype
60 $(IN)rshd: prototype nul
61 ( ./nul ; cat prototype ) > $@
64 # In case no /dev/zero available, let's hope they have at least
65 # a C compiler of some sort.
68 echo 'main() { write(1,"",1); return(0); }' >nul.c
69 $(CC) $(CFLAGS) -s -o nul nul.c