linux/ddos-mitigator
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Improve parameter validation.

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This commit is contained in:
Manuel Friedli 2020-11-24 21:15:37 +01:00
parent 11ad1b471a
commit f5180a5e57
1 changed files with 51 additions and 36 deletions
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87
ddos-mitigator.sh
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@ -256,10 +256,6 @@ function parse_command_line_args() {
'')
autopilot=1
;;
# *[!0-9]*)
# echo "Invalid argument for parameter 'auto': '${2}'. Invoke with --help for help." >&2
# exit 1
# ;;
*)
autopilot="$2"
;;
@ -268,10 +264,6 @@ function parse_command_line_args() {
;;
'-c' | '--country')
IFS=',' read -ra bancountries <<<"${2}"
# if [[ -z ${bancountries[@]// /} ]]; then
# echo "Invalid argument for parameter 'country': '${2}'. Invoke with --help for help." >&2
# exit 1
# fi
shift
;;
'-d' | '--database')
@ -345,34 +337,6 @@ function parse_command_line_args() {
}
function validate_parameter_values() {
# Autopilot
case "${autopilot}" in
*[!0-9]*)
echo "Invalid value argument for parameter 'auto' / 'AUTOPILOT': '${autopilot}'." >&2
echo "Invoke with --help for help." >&2
exit 1
;;
esac
# Countries
if [[ -z ${bancountries[@]// /} ]]; then
echo "Invalid argument for parameter 'country' / 'COUNTRIES': '${bancountries[*]}'." >&2
echo "Invoke with --help for help." >&2
exit 1
fi
# Netmask
case "${netmask}" in
'8' | '16' | '24' | '32')
# Everything OK.
;;
*)
echo "Invalid argument for parameter 'netmask': '${2}'." >&2
echo "Invoke with --help for help." >&2
exit 1
;;
esac
# GeoIP-Database
if [[ -z "${database}" ]]; then
echo "No GeoIP database specified. Invoke with --help for more information." >&2
@ -383,6 +347,57 @@ function validate_parameter_values() {
echo "Database '${database}' is not accessible." >&2
exit 1
fi
# Autopilot
case "${autopilot}" in
*[!0-9]*)
echo "Invalid value for parameter 'auto' / 'AUTOPILOT': '${autopilot}'." >&2
echo "Invoke with --help for help." >&2
exit 1
;;
esac
# Countries
if [[ -z ${bancountries[@]// /} ]]; then
echo "Invalid value for parameter 'country' / 'COUNTRIES': '${bancountries[*]}'." >&2
echo "Invoke with --help for help." >&2
exit 1
fi
# Jail
if [[ -z "${jail}" ]]; then
echo "Invalid value for parameter 'jail' / 'JAIL': '${jail}'." >&2
echo "Invoke with --help for help." >&2
exit 1
fi
# Netmask
case "${netmask}" in
'0' | '8' | '16' | '24' | '32')
# Everything OK.
;;
*)
echo "Invalid value for parameter 'netmask': '${2}'." >&2
echo "Invoke with --help for help." >&2
exit 1
;;
esac
# Port
case "${port}" in
*[!0-9]*)
echo "Invalid value for parameter 'port' / 'PORT': '${autopilot}'." >&2
echo "Invoke with --help for help." >&2
exit 1
;;
esac
if [[ ${port} -lt 0 || ${port} -gt 65535 ]]; then
echo "Invalid value for parameter 'port' / 'PORT': '${autopilot}'." >&2
echo "Value must be between 0 ... 65535 (inclusive)." >&2
echo "Invoke with --help for help." >&2
exit 1
;;
fi
}
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