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Diffstat (limited to 'Banners.Makefile')
| -rw-r--r-- | Banners.Makefile | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/Banners.Makefile b/Banners.Makefile new file mode 100644 index 0000000..915e3dd --- /dev/null +++ b/Banners.Makefile @@ -0,0 +1,70 @@ +# @(#) Banners.Makefile 1.3 97/02/12 02:13:18 +# +# Install this file as the Makefile in your directory with banner files. +# It will convert a prototype banner text to a form that is suitable for +# the ftp, telnet, rlogin, and other services. +# +# You'll have to comment out the IN definition below if your daemon +# names don't start with `in.'. +# +# The prototype text should live in the banners directory, as a file with +# the name "prototype". In the prototype text you can use %<character> +# sequences as described in the hosts_access.5 manual page (`nroff -man' +# format). The sequences will be expanded while the banner message is +# sent to the client. For example: +# +# Hello %u@%h, what brings you here? +# +# Expands to: Hello username@hostname, what brings you here? Note: the +# use of %u forces a client username lookup. +# +# In order to use banners, build the tcp wrapper with -DPROCESS_OPTIONS +# and use hosts.allow rules like this: +# +# daemons ... : clients ... : banners /some/directory ... +# +# Of course, nothing prevents you from using multiple banner directories. +# For example, one banner directory for clients that are granted service, +# one banner directory for rejected clients, and one banner directory for +# clients with a hostname problem. +# +SHELL = /bin/sh +IN = in. +BANNERS = $(IN)telnetd $(IN)ftpd $(IN)rlogind # $(IN)fingerd $(IN)rshd + +all: $(BANNERS) + +$(IN)telnetd: prototype + cp prototype $@ + chmod 644 $@ + +$(IN)ftpd: prototype + sed 's/^/220-/' prototype > $@ + chmod 644 $@ + +$(IN)rlogind: prototype nul + ( ./nul ; cat prototype ) > $@ + chmod 644 $@ + +# Other services: banners may interfere with normal operation +# so they should probably be used only when refusing service. +# In particular, banners don't work with standard rsh daemons. +# You would have to use an rshd that has built-in tcp wrapper +# support, for example the rshd that is part of the logdaemon +# utilities. + +$(IN)fingerd: prototype + cp prototype $@ + chmod 644 $@ + +$(IN)rshd: prototype nul + ( ./nul ; cat prototype ) > $@ + chmod 644 $@ + +# In case no /dev/zero available, let's hope they have at least +# a C compiler of some sort. + +nul: + echo 'main() { write(1,"",1); return(0); }' >nul.c + $(CC) $(CFLAGS) -s -o nul nul.c + rm -f nul.c |