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Annotation of 43BSDReno/usr.sbin/sendmail/cf/m4/rule0.m4, revision 1.1

1.1     ! root        1: divert(10)
        !             2: #
        !             3: # Copyright (c) 1983 Eric P. Allman
        !             4: # Copyright (c) 1988 The Regents of the University of California.
        !             5: # All rights reserved.
        !             6: #
        !             7: # Redistribution and use in source and binary forms are permitted
        !             8: # provided that the above copyright notice and this paragraph are
        !             9: # duplicated in all such forms and that any documentation,
        !            10: # advertising materials, and other materials related to such
        !            11: # distribution and use acknowledge that the software was developed
        !            12: # by the University of California, Berkeley.  The name of the
        !            13: # University may not be used to endorse or promote products derived
        !            14: # from this software without specific prior written permission.
        !            15: # THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16: # IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17: # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18: #
        !            19: #      @(#)rule0.m4    1.11 (Berkeley) 2/15/89
        !            20: #
        !            21: divert(0)
        !            22: ############################################################
        !            23: ############################################################
        !            24: #####
        !            25: #####          RULESET ZERO PREAMBLE
        !            26: #####
        !            27: #####  The beginning of ruleset zero is constant through all
        !            28: #####  configurations.
        !            29: #####
        !            30: ############################################################
        !            31: ############################################################
        !            32: 
        !            33: S0
        !            34: 
        !            35: # first make canonical
        !            36: R$*<$*>$*              $1$2$3                          defocus
        !            37: R$+                    $:$>3$1                         make canonical
        !            38: 
        !            39: # handle special cases
        !            40: R$*<@[$+]>$*           $:$1<@$[[$2]$]>$3               numeric internet addr
        !            41: R$*<@[$+]>$*           $#tcp$@[$2]$:$1@[$2]$3          numeric internet spec
        !            42: R$+                    $:$>6$1
        !            43: R$-<@$w>               $#local$:$1
        !            44: R@                     $#error$:Invalid address        handle <> form
        !            45: 
        !            46: # canonicalize using the nameserver if not internal domain
        !            47: R$*<@$*.$~I>$*         $:$1<@$[$2.$3$]>$4
        !            48: R$*<@$->$*             $:$1<@$[$2$]>$3
        !            49: R$*<@$->$*             $:$1<@$2.$D>$3                  if nameserver fails
        !            50: 
        !            51: # now delete the local info
        !            52: R<@$w>:$*              $@$>0$1                         @here:... -> ...
        !            53: R$*<@$w>               $@$>0$1                         ...@here -> ...
        !            54: 
        !            55: ##################################
        !            56: #  End of ruleset zero preamble  #
        !            57: ##################################

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