[1917] in Moira
mailhub.sh changes
daemon@ATHENA.MIT.EDU (Mark Silis)
Fri Jan 18 15:58:35 2002
Date: Fri, 18 Jan 2002 15:57:33 -0500
From: Mark Silis <mark@MIT.EDU>
To: moiradev@MIT.EDU
Cc: postmaster@MIT.EDU
Message-ID: <20020118205733.GA391@I-fear-reorgs.MIT.EDU>
Mime-Version: 1.0
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These are changes to mailhub.sh in response to the lossage we had on January
16th. This should hopefully make it harder for that to happen in the future.
-- Mark
Index: mailhub.sh
===================================================================
RCS file: /afs/athena/astaff/project/moiradev/repository/moira/gen/mailhub.sh,v
retrieving revision 1.10
diff -u -r1.10 mailhub.sh
--- mailhub.sh 2001/11/24 00:08:46 1.10
+++ mailhub.sh 2002/01/18 15:35:33
@@ -1,19 +1,52 @@
#!/bin/sh
-PATH=/bin:/usr/ucb:/usr/bin
-root=/usr/local/sendmail
+#
+# $Header$
+
+PATH=/sbin:/bin:/usr/sbin:/usr/bin:/etc:/usr/etc:/usr/athena/bin:/usr/local/bin
+export PATH
+
+if [ -d /var/athena ] && [ -w /var/athena ]; then
+ exec >/var/athena/moira_update.log 2>&1
+else
+ exec >/tmp/moira_update.log 2>&1
+fi
+# The following exit codes are defined and MUST BE CONSISTENT with
+# error codes the library uses:
MR_MKCRED=47836474
+MR_MISSINGFILE=47836473
+
+root=/usr/local/sendmail
+
+if [ -r $root/etc/aliases.new ]; then
+ chmod 644 $root/etc/aliases.new
+else
+ exit $MR_MISSINGFILE
+fi
-cat $root/etc/aliases.legacy > $root/etc/aliases.tmp
-cat $root/etc/aliases.new >> $root/etc/aliases.tmp
-cat $root/etc/aliases.local >> $root/etc/aliases.tmp
-mv $root/etc/aliases.tmp $root/etc/aliases.new
+# Play it safe and be sure we have reasonable data
+olines=`wc -l $root/etc/aliases | awk '{print $1}'`
+nlines=`wc -l $root/etc/aliases.new | awk '{print $1}'`
+diff=`expr $nlines - $olines`
+thresh=`expr $nlines / 10`
+
+# Catch the zero case
+if [ $nlines -eq 0 ]; then
+ logger -p mail.error -t mailhub.sh "Recieved empty aliases file, aborting."
+ exit $MR_MKCRED
+fi
+
+# If its a greater than 10% shift bomb out to be safe
+if [ $diff -gt $thresh ]; then
+ logger -p mail.error -t mailhub.sh "Alias changes threshold exceeded, aborting."
+ exit $MR_MKCRED
+fi
cp /dev/null $root/etc/aliases.new.db
$root/sbin/sendmail -bi -oA$root/etc/aliases.new
if [ $? != 0 ]; then
- exit $MR_MKCRED
+ exit $MR_MKCRED
fi
kill `ps -ef | grep "sendmail" | egrep -v "grep|mqueue.stall" | awk '{print $2}'`
@@ -24,15 +57,13 @@
mv $root/etc/aliases.new $root/etc/aliases
mv $root/etc/aliases.new.db $root/etc/aliases.db
-cd /usr/spool/mqueue
-rm -f xf* tf* lf* nf*
-
-#$root/sbin/sendmail -bd
-#$root/sbin/sendmail -q20m
-
sh /etc/init.d/sendmail start
+# Make sure the sendmail daemons are indeed running
+ps -ef | grep sendmail | grep -v grep > /dev/null 2>&1
+if [ $? -ne 0 ]; then
+ exit $MR_MKCRED
+fi
+
rm -f $0
exit 0
-
-# $Header: /afs/athena/astaff/project/moiradev/repository/moira/gen/mailhub.sh,v 1.10 2001/11/24 00:08:46 zacheiss Exp $
