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110 lines
3.8 KiB
Bash
Executable File
110 lines
3.8 KiB
Bash
Executable File
#!/bin/bash
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# This script is used by the xdcp MERGE: function to perform the
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# merge operation on the nodes for the /etc/passwd, /etc/shadow and
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# and /etc/group files. These are the only supported files for merge.
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# The MERGE function is also only supported on Linux.
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#First parameter is nodesyncfiledir
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#The next parameter is the MERGE clause put in the following format
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#mergefile1:currfile1 mergefile2:currfile2.....
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#For example:
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#/tmp/myusers:/etc/passwd /tmp/mypasswds:/etc/shadow /tmp/mygrps:/etc/group
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#
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# Check for Linux, AIX not supported
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if [ "$(uname -s)" != "Linux" ]; then
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logger -t xcat -p local4.err "Merge: xdcp merge is only supported on Linux"
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exit 1
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fi
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#this is the base path to the merge directory
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nodesyncfiledir=$1
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#this is the backup copy of the original current file
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nodesyncfiledirorg="$nodesyncfiledir/org"
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#this is the path to merge working files
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nodesyncfiledirmerge="$nodesyncfiledir/merge"
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#this is the path to the files containing the merge data
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nodesynfiledirmergefiles="$nodesyncfiledir/merge/mergefiles"
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skip=0
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# for each input parameter
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for i in $*; do
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# skip first parm
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if [ $skip -eq 0 ]; then
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skip=1
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continue
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fi
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# get the merge file path and name, for example /tmp/myusers
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mergefilename=`echo "$i"|cut -d ':' -f 1`
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# get location on the node
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mergefile="$nodesynfiledirmergefiles$mergefilename"
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# get the file path and name to merge into, for example /etc/passwd
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curfile=`echo "$i"|cut -d ':' -f 2`
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# if curfile not /etc/passwd or /etc/shadow or /etc/group
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# exit error
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#if [ "$curfile" != "/etc/passwd" ] && [ "$curfile" != "/etc/shadow" ] && [ "$curfile" != "/etc/group" ]; then
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# logger -t xcat -p local4.err "Merge: $curfile is not /etc/passwd or /etc/shadow or /etc/group. It cannot be processes."
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# exit 1
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#fi
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# get the directory to backup the original file
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curfiledir=`dirname $curfile`
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curfilename=`basename $curfile`
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filebackupdir="$nodesyncfiledirorg$curfiledir"
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# name of the path to the backup of original file
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filebackup="$nodesyncfiledirorg$curfile"
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# now do the work
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# make the necessary directories
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mkdir -p $filebackupdir
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# copy current to backup
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cp -p $curfile $filebackup
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# Go though the backup copy and remove duplicate lines that are
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# in the merge file and create a new backup
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# first get a list of duplicate lines to remove
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# based on only username: the first field in the file
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cut -d: -f1 $filebackup > $filebackup.userlist
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cut -d: -f1 $mergefile > $mergefile.userlist
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comm -12 <(sort $filebackup.userlist | uniq) <(sort $mergefile.userlist | uniq) > $filebackup.remove
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# now if there is a remove file, use it to remove the dup lines in backup
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# Need to buit a command like the following with all users
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#grep -v -E ^(root|bin|...) $filebackup > $filebackup.nodups
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if [ -s "$filebackup.remove" ]; then
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grepcmd="grep -v -E "
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removeusers=`cat $filebackup.remove`
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startlist="'^("
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userlist=$startlist
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delim="|"
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for u in $removeusers
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do
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# For special char +/-, need to escape
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[[ "${u:0:1}x" =~ ^\+|\-x ]] && uu="\\$u" || uu="$u"
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userlist=$userlist$uu$delim
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done
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# remove the last delimiter
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userlisttmp="${userlist%?}"
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listend="):'"
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userlist=$userlisttmp$listend
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grepcmd=$grepcmd$userlist
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#set -x
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grepcmd="$grepcmd $filebackup > $filebackup.nodups"
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# now run it
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eval $grepcmd
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#echo "grepcmd=$grepcmd"
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cat $filebackup.nodups $mergefile > $curfile
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#echo "$filebackup.nodups $mergefile > $curfile"
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else
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cat $filebackup $mergefile > $curfile
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#echo "cat $filebackup $mergefile > $curfile"
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fi
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# now cleanup
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rm $filebackup.userlist
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# echo "rm $filebackup.userlist"
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rm $filebackup.remove
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# echo "rm $filebackup.remove"
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rm $mergefile.userlist
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# echo "rm $mergefile.userlist"
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done
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exit 0
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