X-Git-Url: http://andersk.mit.edu/gitweb/moira.git/blobdiff_plain/de56407f0fd27d5366a936b872972630f1683f0f..55c583c5bfe3ac2556ecd99569000ac1ba8ce244:/gen/hesiod.sh

diff --git a/gen/hesiod.sh b/gen/hesiod.sh
index 4d8a6bc9..e36ac571 100644
--- a/gen/hesiod.sh
+++ b/gen/hesiod.sh
@@ -1,33 +1,132 @@
-#! /bin/sh
-TARFILE=/tmp/hesiod
+#!/bin/sh
+# This script performs updates of hesiod files on hesiod servers.
+# $Header$
+
+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
+
+set -x 
+
+PATH=/etc:/bin:/usr/bin:/usr/etc:/usr/athena/etc
+export PATH
+
+# The following exit codes are defined and MUST BE CONSISTENT with the
+# error codes the library uses:
+MR_HESFILE=47836472
+MR_MISSINGFILE=47836473
+MR_NAMED=47836475
+MR_TARERR=47836476
+
+umask 022
+
+# File that will contain the necessary information to be updated
+TARFILE=/var/tmp/hesiod.out
+# Directory into which we will empty the tarfile
 SRC_DIR=/etc/athena/_nameserver
+# Directory into which we will put the final product
 DEST_DIR=/etc/athena/nameserver
-if [ ! -d $SRC_DIR ]; then
-	/bin/rm -f $SRC_DIR
-	/bin/mkdir $SRC_DIR
-	/bin/chmod 755 $SRC_DIR
+
+NAMED=/etc/athena/named
+NAMED_PID=/var/athena/named.pid
+
+# Create the destination directory if it doesn't exist
+if test ! -d $DEST_DIR
+then
+   rm -f $DEST_DIR
+   mkdir $DEST_DIR
+   chmod 755 $DEST_DIR
 fi
-#if [ ! -d $DEST_DIR ]; then
-#	/bin/rm -f $DEST_DIR
-#	/bin/mkdir $DEST_DIR
-#	/bin/chmod 755 $DEST_DIR
-#fi
-cd $SRC_DIR
-for file in `/bin/tar tf $TARFILE`; do 
-	if [ ./ = $file ]; then continue; fi
-	/bin/tar xf $TARFILE $file
-	if [ -s $file ]; then
-		/bin/mv -f $file $DEST_DIR
-	else
-		/bin/rm -f $file
+
+# If $SRC_DIR does not already exist, make sure that it gets created
+# on the same parition as $DEST_DIR.
+if test ! -d $SRC_DIR
+then
+	chdir $DEST_DIR
+	mkdir ../_nameserver
+	chdir ../_nameserver
+	if test $SRC_DIR != `pwd`
+	then
+		ln -s `pwd` $SRC_DIR
 	fi
+fi
+
+# make sure SRC_DIR is empty
+/bin/rm -rf $SRC_DIR/*
+
+# Alert if tarfile doesn't exist
+if test ! -r $TARFILE 
+then
+	exit $MR_MISSINGFILE
+fi
+
+cd $SRC_DIR
+tar xvf $TARFILE
+# Don't put up with errors extracting the information
+if test $? -ne 0
+then
+   exit $MR_TARERR
+fi
+for file in *
+do
+   # Make sure the file is not zero-length
+   if test ! -z $file
+   then
+      mv -f $file $DEST_DIR
+      if test $? -ne 0
+      then
+          exit $MR_HESFILE
+      fi
+   else
+      rm -f $file
+      exit $MR_MISSINGFILE
+   fi
 done
-#/bin/rm -f $TARFILE
-#kill -HUP `/bin/cat /etc/named.pid`
 
+# Kill off the current named and remove the named.pid file.  It is
+# important that this file be removed since the script uses its
+# existance as evidence that named as has been successfully restarted.
+
+# First, get statistics
+kill -ILL `cat $NAMED_PID`
+sleep 1
+kill -KILL `cat $NAMED_PID`
+rm -f $NAMED_PID
+
+# Restart named.
+$NAMED
+echo named started
+
+sleep 1
+# This timeout is implemented by having the shell check TIMEOUT times
+# for the existance of $NAMED_PID and to sleep INTERVAL seconds
+# between each check.
+
+TIMEOUT=60			# number of INTERVALS until timeout
+INTERVAL=60			# number of seconds between checks
+i=0
+while test $i -lt $TIMEOUT
+do
+   if test -f $NAMED_PID
+   then
+	break
+   fi
+   sleep $INTERVAL
+   i=`expr $i + 1`
+done
+echo out of timeout loop
+# Did it time out?
+if test $i -eq $TIMEOUT 
+then
+	exit $MR_NAMED
+fi
+echo no timeout
+# Clean up!
+rm -f $TARFILE
+echo removed tarfile
+rm -f $0
+echo removed self
 
-exit
-#
-# 	$Source$
-#	$Header$
-#
+exit 0