Import sendmail-8.9.1 (slightly trimmed) onto a fresh branch under

src/contrib as per various discussions.  I will copy across our changes
and then point the Makefiles across once the dust has settled..

1 files changed, 113 insertions, 0 deletions

diff --git a/contrib/sendmail/cf/m4/nullrelay.m4 b/contrib/sendmail/cf/m4/nullrelay.m4
new file mode 100644
index 0000000..0202069
--- /dev/null
+++ b/contrib/sendmail/cf/m4/nullrelay.m4
@@ -0,0 +1,113 @@
+divert(-1)
+#
+# Copyright (c) 1998 Sendmail, Inc.  All rights reserved.
+# Copyright (c) 1983, 1995 Eric P. Allman.  All rights reserved.
+# Copyright (c) 1988, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# By using this file, you agree to the terms and conditions set
+# forth in the LICENSE file which can be found at the top level of
+# the sendmail distribution.
+#
+#
+divert(0)
+
+VERSIONID(`@(#)nullrelay.m4	8.19 (Berkeley) 5/19/98')
+
+#
+#  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