[23095] | 1 | #!/bin/sh |
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| 2 | # |
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[24250] | 3 | # $Header: /afs/.athena.mit.edu/astaff/project/moiradev/repository/moira/gen/mailhub.sh,v 1.13 2003-04-18 22:06:03 jweiss Exp $ |
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[23095] | 4 | |
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| 5 | PATH=/sbin:/bin:/usr/sbin:/usr/bin:/etc:/usr/etc:/usr/athena/bin:/usr/local/bin |
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| 6 | export PATH |
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| 7 | |
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| 8 | if [ -d /var/athena ] && [ -w /var/athena ]; then |
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| 9 | exec >/var/athena/moira_update.log 2>&1 |
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| 10 | else |
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| 11 | exec >/tmp/moira_update.log 2>&1 |
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| 12 | fi |
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| 13 | |
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| 14 | # The following exit codes are defined and MUST BE CONSISTENT with |
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| 15 | # error codes the library uses: |
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| 16 | MR_MKCRED=47836474 |
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| 17 | MR_MISSINGFILE=47836473 |
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| 18 | MR_NOCRED=47836470 |
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| 19 | |
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| 20 | root=/usr/local/sendmail |
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| 21 | |
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| 22 | if [ -r $root/etc/aliases.new ]; then |
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| 23 | chmod 644 $root/etc/aliases.new |
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| 24 | else |
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| 25 | exit $MR_MISSINGFILE |
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| 26 | fi |
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| 27 | |
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| 28 | if [ ! -r $root/etc/aliases ]; then |
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| 29 | logger -p mail.error -t mailhub.sh "No current aliases file, aborting." |
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| 30 | exit $MR_NOCRED |
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| 31 | fi |
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| 32 | |
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| 33 | # Play it safe and be sure we have reasonable data |
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| 34 | olines=`wc -l $root/etc/aliases | awk '{print $1}'` |
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| 35 | nlines=`wc -l $root/etc/aliases.new | awk '{print $1}'` |
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| 36 | diff=`expr $nlines - $olines` |
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| 37 | thresh=`expr $olines / 10` |
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| 38 | |
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| 39 | # Catch the zero case |
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| 40 | if [ $nlines -eq 0 ]; then |
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| 41 | logger -p mail.error -t mailhub.sh "Recieved empty aliases file, aborting." |
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| 42 | exit $MR_MISSINGFILE |
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| 43 | fi |
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| 44 | |
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| 45 | # If its a greater than 10% shift bomb out to be safe |
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| 46 | if [ $diff -gt $thresh ]; then |
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| 47 | logger -p mail.error -t mailhub.sh "Alias changes threshold exceeded, aborting." |
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| 48 | exit $MR_NOCRED |
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| 49 | fi |
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| 50 | |
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| 51 | cp /dev/null $root/etc/aliases.new.db |
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| 52 | |
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| 53 | $root/sbin/sendmail -bi -oA$root/etc/aliases.new |
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| 54 | if [ $? != 0 ]; then |
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| 55 | exit $MR_MKCRED |
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| 56 | fi |
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| 57 | |
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| 58 | sh /etc/init.d/sendmail stop |
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| 59 | |
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| 60 | mv $root/etc/aliases $root/etc/aliases.old |
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| 61 | mv $root/etc/aliases.db $root/etc/aliases.old.db |
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| 62 | mv $root/etc/aliases.new $root/etc/aliases |
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| 63 | mv $root/etc/aliases.new.db $root/etc/aliases.db |
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| 64 | |
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| 65 | sh /etc/init.d/sendmail start |
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| 66 | |
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| 67 | # Make sure the sendmail daemons are indeed running |
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| 68 | ps -ef | grep sendmail | grep -v grep > /dev/null 2>&1 |
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| 69 | if [ $? -ne 0 ]; then |
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| 70 | logger -p mail.error -t mailhub.sh "Sendmail failed to restart." |
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| 71 | exit $MR_MKCRED |
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| 72 | fi |
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| 73 | |
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| 74 | rm -f $0 |
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| 75 | exit 0 |
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