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|
#! /bin/sh
# COPYRIGHT AND LICENCE
#
# AUTHOR: R K Owen, Ph.D., <rkowen@nersc.gov>
# of the National Energy Research Scientific Computing Center (NERSC),
# a Division of the Lawrence Berkeley National Laboratory (LBL),
# funded by the U.S. Department of Energy.
#
# Copyright (C) 2008 The Regents of the University of California
#
# This is free software; you can redistribute it
# and/or modify it under the terms of the GNU General
# Public License as published by the Free Software Foundation;
# version 2.0 of the License.
basedir=`dirname $0`
[ x"$basedir" = x"" ] && basedir="."
fname=`basename $0`
PAMSCRIPTDIR=${PAMSCRIPTDIR:-$basedir/pam-script.d}
goodperms () {
local path="$1"
stat_output=`/usr/bin/stat -c "%A:%u:%g" "$path"`
if [ $? -ne 0 ]; then
echo "$0: Could not stat path $path" 1>&2
return 1
fi
owner=`echo $stat_output | /usr/bin/cut -d ':' -f 2`
group=`echo $stat_output | /usr/bin/cut -d ':' -f 3`
world_write_bit=${stat_output:8:1}
if [ ${world_write_bit} != "-" -o "$owner" -ne 0 -o "$group" -ne 0 ]; then
echo "$0: Unsafe permissions for path $path; Rejecting execution." 1>&2
return 1
fi
}
runscript () {
script="$1"
shift
if [ ! -e "$script" ]; then
return 0
fi
goodperms "$script" || return 1
/bin/sh "$script" "$@"
return $?
}
if [ x"$fname" != x"pam_script" ]; then
# process files in pam-script.d/
mtype=''
PAM_SCRIPT_STATUS=0
export PAM_SCRIPT_STATUS
case $fname in
*_auth) mtype='_auth' ;;
*_acct) mtype='_acct' ;;
*_passwd) mtype='_passwd' ;;
*_ses_open) mtype='_ses_open' ;;
*_ses_close) mtype='_ses_close' ;;
esac
goodperms "$PAMSCRIPTDIR" || exit $PAM_SCRIPT_STATUS
for script in $PAMSCRIPTDIR/*$mtype; do
runscript "$script" $@ || PAM_SCRIPT_STATUS=1
export PAM_SCRIPT_STATUS
done
exit $PAM_SCRIPT_STATUS
else
# do administrative things
usage() {
/bin/cat <<!
$fname - administrative and driver script for pam-script.d
usage: $fname [-h][-v][-x][{-s|-r} moduletype] base_pam_script
-h this helpful info
-v verbose
-x create pam_script_* links instead
-s moduletype Set the links to base_pam_scriptfile as
a combination of auth,pass,ses_cl,ses_op
or session for both ses_cl and ses_op
or 'all' for all moduletypes ... use commas
to separate the moduletypes
-r moduletype Remove the same as above
If neither -s or -r is given then just
show the links
base_pam_script which script to handle somehow
Set PAMSCRIPTDIR if you want links in a directory other than
$basedir/pam-script.d
!
}
rmlink () {
# $1 operation remove or link
# $2 module type auth,acct,passwd,ses_open,ses_close
# $3 basepamscript
# $4 xpamscript
if [ x$1 = xlink ]; then
(cd $PAMSCRIPTDIR;
[ -e $4_$2 ] || [ -e $3 ] && \
( [ $verbose = 1 ] && echo ln -s $3 $4_$2;
ln -s $3 $4_$2))
elif [ x$1 = xremove ]; then
(cd $PAMSCRIPTDIR;
[ -e $4_$2 ] && \
( [ $verbose = 1 ] && echo rm -f $4_$2;
rm -f $4_$2))
fi
}
TEMP=`getopt 'hvxs:r:' "$@"`
eval set -- $TEMP
verbose=0
op='list'
mtype=''
xbase=''
while [ $# -gt 0 ]; do
case "$1" in
-h) usage
exit
;;
-v) verbose=1
;;
-x) xbase='pam_script'
;;
-s) op='link'
shift
mtype="$1"
;;
-r) op='remove'
shift
mtype="$1"
;;
--) shift
break
;;
-*) echo invalid option "$1"
usage
exit
;;
*) shift
break
;;
esac
shift
done
pamfile=$1
if [ x"$pamfile" = x"" ]; then
echo "Need to pass a pam script"
usage
exit
fi
[ x"$xbase" = x"" ] && xbase=$pamfile
if [ $verbose = 1 ]; then
echo PAMSCRIPTDIR=$PAMSCRIPTDIR
echo base pam script=$pamfile
echo link base=$xbase
fi
case $op in
list) [ $verbose = 1 ] && echo listing
ls -l $PAMSCRIPTDIR/$pamfile* 2>/dev/null
;;
link|remove)
[ $verbose = 1 ] && echo $op
eval set -- `echo $mtype | sed 's/,/ /g'`
while [ $# -gt 0 ]; do
case "$1" in
auth) rmlink $op auth $pamfile $xbase
;;
acct) rmlink $op acct $pamfile $xbase
;;
passwd) rmlink $op passwd $pamfile $xbase
;;
ses_open) rmlink $op ses_open $pamfile $xbase
;;
ses_close) rmlink $op ses_close $pamfile $xbase
;;
session) rmlink $op ses_open $pamfile $xbase
rmlink $op ses_close $pamfile $xbase
;;
all) rmlink $op auth $pamfile $xbase
rmlink $op acct $pamfile $xbase
rmlink $op passwd $pamfile $xbase
rmlink $op ses_open $pamfile $xbase
rmlink $op ses_close $pamfile $xbase
;;
esac
shift
done
;;
esac
fi
exit
|
