Jeff Schroeder

#!/bin/sh

   #########################################################
  # Written Nov 13, 2007 and released under the GNU/GPLv2 ##
 # by Jeff Schroeder (jeffschroeder@computer.org)        # #
#########################################################  #
#                                                       #  #
# restoreperms - restore permissions and fix ownership  #  #
#                on changed files from info in the rpm  #  #
#                database. Uses / Abuses rpm -V         #  #
#                                                       # #
##########################################################

usage() {
cat << EOF >&2
Usage: $0 -p rpmpackagename <options>
       -s   set the permissions and file ownership back to what
            they should be if anything has changed
       -l   list the permissions on every file from the rpmdb
       -n   dry-run mode. Don't actually do anything
EOF
exit 1
}

while getopts 'lfnp:' opt 2>/dev/null; do
    case "$opt" in
        l)    LIST=true ;;
        p)    PACKAGE="$OPTARG" ;;
        f)    FIX=true ;;
        n)    DRYRUN=true ;;
        *)    usage ;;
    esac
done

# If called with 0 arguments
test -z "$*" && usage

if [ "$DRYRUN" = "true" ]; then
        echo "Simulating:"
        RPM="echo /bin/rpm"
else
        RPM=/bin/rpm
fi

if [ "$LIST" = "true" ]; then
    (echo Listing of proper file permissions for $PACKAGE \('q' to exit\); \
    rpm -q --qf '[%{FILENAMES}\t%{FILEMODES:octal}\n]' $PACKAGE) | less
fi

if (test "$FIX" = "true" && ! /bin/rpm -V $PACKAGE >/dev/null 2>&1); then
    status=$(rpm -V $PACKAGE 2>&1 | awk '{print $1}' | grep -o '[A-Z]')
    for opt in $status; do
        case "$opt" in
            M)
                $RPM --setperms $PACKAGE
            ;;
            U|G)
                # No point in setting them twice if the user and group are
                # both messed up. Be all intelligent and do it only once
                if [ "$PERMS" != "fixed" ]; then
                        $RPM --setugids $PACKAGE && PERMS=fixed
                fi
            ;;
        esac
     done
fi