debian-cis/lib/common.sh
2020-11-27 09:22:47 +01:00

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# shellcheck shell=bash
# CIS Debian Hardening common functions
# run-shellcheck
#
# File Backup functions
#
backup_file() {
FILE=$1
if [ ! -f $FILE ]; then
crit "Cannot backup $FILE, it's not a file"
FNRET=1
else
TARGET=$(echo $FILE | sed -s -e 's/\//./g' -e 's/^.//' -e "s/$/.$(date +%F-%H_%M_%S)/" )
TARGET="$BACKUPDIR/$TARGET"
debug "Backuping $FILE to $TARGET"
cp -a $FILE $TARGET
FNRET=0
fi
}
#
# Logging functions
#
case $LOGLEVEL in
error )
MACHINE_LOG_LEVEL=1
;;
warning )
MACHINE_LOG_LEVEL=2
;;
ok )
MACHINE_LOG_LEVEL=3
;;
info )
MACHINE_LOG_LEVEL=4
;;
debug )
MACHINE_LOG_LEVEL=5
;;
*)
MACHINE_LOG_LEVEL=4 ## Default loglevel value to info
esac
_logger() {
COLOR=$1
shift
test -z "$SCRIPT_NAME" && SCRIPT_NAME=$(basename $0)
builtin echo "$*" | /usr/bin/logger -t "CIS_Hardening[$$] $SCRIPT_NAME" -p "user.info"
SCRIPT_NAME_FIXEDLEN=$(printf "%-25.25s" "$SCRIPT_NAME")
cecho $COLOR "$SCRIPT_NAME_FIXEDLEN $*"
}
becho() {
toprint=$(echo "$*" | /usr/bin/tr '\n' ' ')
builtin echo "$toprint" | /usr/bin/logger -t "CIS_Hardening[$$]" -p "user.info"
builtin echo "$toprint"
}
cecho () {
COLOR=$1
shift
builtin echo -e "${COLOR}$*${NC}"
}
crit () {
if [ ${BATCH_MODE:-0} -eq 1 ]; then
BATCH_OUTPUT="$BATCH_OUTPUT KO{$*}"
else
if [ $MACHINE_LOG_LEVEL -ge 1 ]; then _logger $BRED "[ KO ] $*"; fi
fi
# This variable incrementation is used to measure failure or success in tests
CRITICAL_ERRORS_NUMBER=$((CRITICAL_ERRORS_NUMBER+1))
}
warn () {
if [ ${BATCH_MODE:-0} -eq 1 ]; then
BATCH_OUTPUT="$BATCH_OUTPUT WARN{$*}"
else
if [ $MACHINE_LOG_LEVEL -ge 2 ]; then _logger $BYELLOW "[WARN] $*"; fi
fi
}
ok () {
if [ ${BATCH_MODE:-0} -eq 1 ]; then
BATCH_OUTPUT="$BATCH_OUTPUT OK{$*}"
else
if [ $MACHINE_LOG_LEVEL -ge 3 ]; then _logger $BGREEN "[ OK ] $*"; fi
fi
}
info () {
if [ $MACHINE_LOG_LEVEL -ge 4 ]; then _logger '' "[INFO] $*"; fi
}
debug () {
if [ $MACHINE_LOG_LEVEL -ge 5 ]; then _logger $GRAY "[DBG ] $*"; fi
}
#
# sudo wrapper
# issue crit state if not allowed to perform sudo
# for the specified command
#
sudo_wrapper() {
if sudo -l "$@" >/dev/null 2>&1 ; then
sudo -n "$@"
else
crit "Not allowed to \"sudo -n $*\" "
fi
}