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Diffstat (limited to 'cf/m4/nullrelay.m4')
| -rw-r--r-- | cf/m4/nullrelay.m4 | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/cf/m4/nullrelay.m4 b/cf/m4/nullrelay.m4 new file mode 100644 index 0000000..e8f9677 --- /dev/null +++ b/cf/m4/nullrelay.m4 @@ -0,0 +1,135 @@ +divert(-1) +# +# Copyright (c) 1983, 1995 Eric P. Allman +# Copyright (c) 1988, 1993 +# The Regents of the University of California. 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. All advertising materials mentioning features or use of this software +# must display the following acknowledgement: +# This product includes software developed by the University of +# California, Berkeley and its contributors. +# 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. +# +divert(0) + +VERSIONID(`@(#)nullrelay.m4 8.13 (Berkeley) 4/30/97') + +# +# This configuration applies only to relay-only hosts. They send +# all mail to a hub without consideration of the address syntax +# or semantics, except for adding the hub qualification to the +# addresses. +# +# This is based on a prototype done by Bryan Costales of ICSI. +# + +###################################################################### +###################################################################### +##### +##### REWRITING RULES +##### +###################################################################### +###################################################################### + +########################################### +### Rulset 3 -- Name Canonicalization ### +########################################### +S3 + +# handle null input +R$@ $@ <@> + +# strip group: syntax (not inside angle brackets!) and trailing semicolon +R$* $: $1 <@> mark addresses +R$* < $* > $* <@> $: $1 < $2 > $3 unmark <addr> +R$* :: $* <@> $: $1 :: $2 unmark node::addr +R:`include': $* <@> $: :`include': $1 unmark :`include':... +R$* : $* <@> $: $2 strip colon if marked +R$* <@> $: $1 unmark +R$* ; $1 strip trailing semi +R$* < $* ; > $1 < $2 > bogus bracketed semi + +# null input now results from list:; syntax +R$@ $@ :; <@> + +# basic textual canonicalization -- note RFC733 heuristic here +R$* $: < $1 > housekeeping <> +R$+ < $* > < $2 > strip excess on left +R< $* > $+ < $1 > strip excess on right +R<> $@ < @ > MAIL FROM:<> case +R< $+ > $: $1 remove housekeeping <> + +ifdef(`_NO_CANONIFY_', `dnl', +`# eliminate local host if present +R@ $=w $=: $+ $@ @ $M $2 $3 @thishost ... +R@ $+ $@ @ $1 @somewhere ... + +R$=E @ $=w $@ $1 @ $2 leave exposed +R$+ @ $=w $@ $1 @ $M ...@thishost +R$+ @ $+ $@ $1 @ $2 ...@somewhere + +R$=w ! $=E $@ $2 @ $1 leave exposed +R$=w ! $+ $@ $2 @ $M thishost!... +R$+ ! $+ $@ $1 ! $2 @ $M somewhere ! ... + +R$=E % $=w $@ $1 @ $2 leave exposed +R$+ % $=w $@ $1 @ $M ...%thishost +R$+ % $+ $@ $1 @ $2 ...%somewhere + +R$=E $@ $1 @ $j leave exposed +R$+ $@ $1 @ $M unadorned user') + + +###################################### +### Ruleset 0 -- Parse Address ### +###################################### + +S0 + +R$*:;<@> $#error $@ USAGE $: "list:; syntax illegal for recipient addresses" + +# pass everything else to a relay host +R$* $#_RELAY_ $@ $H $: $1 + + +################################################## +### Ruleset 4 -- Final Output Post-rewriting ### +################################################## +S4 + +R$* <@> $@ handle <> and list:; + +# strip trailing dot off before passing to nullclient relay +R$* @ $+ . $1 @ $2 + +# +###################################################################### +###################################################################### +##### +`##### MAILER DEFINITIONS' +##### +###################################################################### +###################################################################### +undivert(7)dnl |