configs/config.samples/S002

   1 From: John Jetmore <jetmore@cinergycom.com>
   2 Date: Wed, 24 Sep 2003 13:12:58 -0500 (CDT)
   3
   4 I'm sure that everyone who's interested in something like this has already
   5 come up with their own way to do this, but here's my solution:
   6
   7 When I moved from smail to exim I built a program that took individual
   8 config pieces stripped all the comments and built a config file.  As a
   9 bonus, it also runs exim -C <testfile> -bV on the new file and reports any
  10 config errors before copying it over the old config.  In addition to just
  11 being familiar in general w/ all the files being broken up according to
  12 their major categories, I also got the benfit of being able to have config
  13 pieces that were easily updatable (just replace the whole file and rebuild
  14 the configure file).
  15
  16 The script has some site-specific stuff hard coded, but it's easily
  17 fixable.  Essentially in my exim configd I have a directory called
  18 subconfigure, which can contain directories named \d\d.\w+.  Mine
  19 currently contains:
  20 10.general/  30.routers/     50.retry/    70.authenticators/
  21 20.acls/     40.transports/  60.rewrite/  80.local_scan/
  22
  23 Each of these directories can contain files in the form \d\d.\w+.  For
  24 instance, my 30.routers contains:
  25 00.begin              80.l_user_delivery_normal   _50.l_mx
  26 10.r_forcepaths       _12.r_static_route_junk     _60.l_psp
  27 15.r_stalemail        _17.r_internal_route        _72.l_aliases_list
  28 33.r_mailrtrd_router  _20.r_conditionalforce      _74.l_aliases_isp
  29 40.r_standard         _31.r_mailrtrd_bypass_spam  _76.l_aliases_mer
  30 70.l_aliases          _39.r_smarthost             _80.l_user_delivery_isp
  31
  32 those files prefixed by "_" will not be used to build the live configure
  33 file.  They are "turned off".  This allows me to keep a general list of
  34 configure pieces that are easily updatable but not necessarily every rule
  35 is used on every machine.  Not every file contains a single router - for
  36 instance 60.l_psp is our virtual hosting solution and contains 10 routers.
  37 They're just grouped by logical role.
  38
  39 All of these sub pieces are built in to the configure file w/ a shell
  40 script called mkconfigure, inline below.  Again, my assumption is that
  41 anyone who wants a system like this built it for themselves, but it
  42 would be kind of fun to flesh this script out to be more generic.
  43 Maybe post it and some samples on a webpage.  Or no one responds to this
  44 and I shut up about it =).
  45
  46 This system is way overkill for some people (for instance, my home machine
  47 uses a single configure file because I don't do that much special with
  48 it), but it's useful in a larger system role.
  49
  50 --John
  51
  52 mkconfigure:
  53
  54 #!/bin/ksh
  55
  56 # I have found that our custom set up of exim's configure file is overly
  57 # confusing.  To help alleviate this, I have broken the file out into its
  58 # core pieces (general, tansports, directors, routers, retry, rewrite, and
  59 # authentication), and then each of those into logical sub-pieces (SIS,
  60 # for instance.  This program is to take all of those sub pieces and put
  61 # them back together into the file that exim understands.
  62
  63 # No one should every touch the 'configure' file from now on, one should
  64 # instead manipulate the files in the subconfigure directory and run this
  65 # program
  66
  67 # jetmore 20011119
  68
  69 EXIMD=$1
  70 CONFIGSUFF=$2
  71
  72 if [ "X$EXIMD" == "X" ] ; then
  73   EXIMD=/local/exim
  74 fi
  75 if [ ! -d "$EXIMD" ] ; then
  76   echo "$EXIMD is not a directory" >&2
  77   exit 1
  78 fi
  79 ETCD=$EXIMD/etc
  80 SUBCD=$ETCD/subconfigure$CONFIGSUFF
  81 CONFIGF=$ETCD/configure$CONFIGSUFF
  82
  83 if [ ! -d $SUBCD ] ; then
  84   echo "$SUBCD is not a directory" >&2
  85   exit 1
  86 fi
  87
  88 GREP=/bin/grep
  89
  90 # initialize the temporary config file in case some trash got left around
  91 cat /dev/null > $CONFIGF.t
  92
  93 # print the banner to the temp config file
  94 echo                                                             >> $CONFIGF.t
  95 echo "#########################################################" >> $CONFIGF.t
  96 echo "# DO NOT DIRECTLY MANIPULATE THIS FILE                   " >> $CONFIGF.t
  97 echo "#                                                        " >> $CONFIGF.t
  98 echo "# if you need to make configuration change, do so in     " >> $CONFIGF.t
  99 echo "# $SUBCD and run the mkconfigure"                          >> $CONFIGF.t
 100 echo "# command.  Changes made to this file will be lost       " >> $CONFIGF.t
 101 echo "#                                                        " >> $CONFIGF.t
 102 echo "# See jetmore w/ questions                               " >> $CONFIGF.t
 103 echo "#########################################################" >> $CONFIGF.t
 104 echo                                                             >> $CONFIGF.t
 105
 106 # get the major categories
 107 for CAT in $SUBCD/[0-9]*
 108 do
 109     # print which category we're in
 110     echo                                                         >> $CONFIGF.t
 111     echo "## major category $CAT"                                >> $CONFIGF.t
 112     echo                                                         >> $CONFIGF.t
 113
 114     # get the subcategories
 115     for SUBCAT in $CAT/[0-9]*
 116     do
 117         # print which sub category we're in
 118         echo "## sub category $SUBCAT"                           >> $CONFIGF.t
 119         echo                                                     >> $CONFIGF.t
 120
 121         # place the contents of any non-comment line into the configure file
 122         $GREP -v "^ *#" $SUBCAT                                  >> $CONFIGF.t
 123         echo                                                     >> $CONFIGF.t
 124     done
 125 done
 126
 127 # check and make sure there aren't any typos in the new config file
 128 $EXIMD/bin/exim -C $CONFIGF.t -bV > $CONFIGF.test 2>&1
 129 if [ "$?" -eq "1" ] ; then
 130     #/bin/rm $CONFIGF.t
 131     echo
 132     echo "There is a problem with the configure file.  "
 133     echo "moving paniclog to paniclog.mkfail"
 134     echo "$CONFIGF.test has details:"
 135     echo
 136     echo #####################################################################
 137     cat $CONFIGF.test
 138     echo #####################################################################
 139     echo
 140     echo "$CONFIGF not changed!"
 141     /bin/mv -f /log/exim/paniclog /log/exim/paniclog.mkfail
 142     exit 1
 143 fi
 144 /bin/rm $CONFIGF.test
 145
 146 /bin/mv $CONFIGF.t $CONFIGF
 147 echo "$CONFIGF updated successfully."
 148 echo "Don't forget to HUP the mail daemon"
 149 exit 0
 150