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update-ngxblocker: use getopts not getopt

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long options for the command line are removed. getopt is replaced with
the newer getopts (which is compatible with Debian's DASH Shell)

* fixes https://github.com/mitchellkrogza/nginx-ultimate-bad-bot-blocker/issues/35

* adds sanity checks for user command line switches

* adds -v command line option to print blacklist version
This commit is contained in:
Stuart Cardall 2017-04-26 15:56:40 +00:00
parent 59c34aebe7
commit 312ee8bdb5
1 changed files with 83 additions and 28 deletions
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111
update-ngxblocker
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@ -35,22 +35,36 @@ CONF_DIR=/etc/nginx/conf.d
##### end user configuration ##############################################################
usage() {
local script=$(basename $0)
cat <<EOF
$script: update Nginx Bad Bot Blocker blacklist to: [ $CONF_DIR ]
local script=$(basename $0)
cat <<EOF
$script: UPDATE Nginx Bad Bot Blocker blacklist in: [ $CONF_DIR ]
Usage: $script [OPTIONS]
[ -c | --conf ] : NGINX conf directory (default: $CONF_DIR)
[ -r | --repo ] : Change repo url (default: $REPO)
[ -e | --email ] : Change email address (default: $EMAIL)
[ -n | --no-email ] : Do not send email report (default: $SEND_EMAIL)
[ -h | --help ] : this help message
[ -c ] : NGINX conf directory (default: $CONF_DIR)
[ -r ] : Change repo url (default: $REPO)
[ -e ] : Change email address (default: $EMAIL)
[ -n ] : Do not send email report (default: $SEND_EMAIL)
[ -v ] : Print blacklist version
[ -h ] : this help message
Examples:
$script (Download blacklist.conf to: $CONF_DIR)
$script (Download blacklist.conf to: $CONF_DIR)
$script -c /my/custom/conf.d (Download blacklist.conf to a custom location)
EOF
return 0
exit 0
}
check_version() {
local file=$CONF_DIR/globalblacklist.conf
if [ -f $file ]; then
grep Version $file
grep 'Updated:' $file
else
printf "Missing '$file' (pass -c \$path before -v)\n"
fi
exit 0
}
service_cmd() {
@ -77,28 +91,69 @@ wget_opts() {
echo $opts
}
sanitize_path() {
echo $1 |tr -cd '[:alnum:] [=@=] [=.=] [=-=] [=/=] [=_=]' \
|tr -s '@.-/_' |awk '{print tolower($0)}'
}
sanitize_url() {
echo $1 |tr -cd '[:alnum:] [=:=] [=.=] [=-=] [=/=]' \
|tr -s ':.-' |awk '{print tolower($0)}'
}
sanitize_email() {
echo $1 |tr -cd '[:alnum:] [=@=] [=.=] [=-=] [=_=]' \
|tr -s '@-_.' |awk '{print tolower($0)}'
}
check_args() {
local option=$1 type=$2 arg=$3
local msg="ERROR: option '-$option' argument '$arg' requires:"
case "$type" in
path) if ! echo $arg | grep ^/ 1>/dev/null; then
printf "$msg absolute path.\n"
exit 1
fi
;;
email) if ! echo $arg | grep -E ^[-_[:alnum:]]+@[-_[:alnum:]]+[\.][\.a-z]+ 1>/dev/null; then
printf "$msg email@domain.com\n"
exit 1
fi
;;
url) if ! echo $arg | grep -E ^http[s]?://[0-9a-zA-Z-]+[.]+[/0-9a-zA-Z.]+ 1>/dev/null; then
printf "$msg url => http[s]://the.url\n"
exit 1
fi
;;
none) printf "$msg argument.\n"; exit 1;;
esac
}
get_options() {
local options=$(getopt -o c:r:e:nh --long \
bots:,conf:,repo:,email:,no-email,help,exec -- "$@" 2>/dev/null)
local arg= opts=
if [ $? -ne 0 ]; then
usage
exit 1
fi
while getopts :c:r:e:nvh opts "$@"
do
if [ -n "${OPTARG}" ]; then
case "$opts" in
r) arg=$(sanitize_url ${OPTARG});;
e) arg=$(sanitize_email ${OPTARG});;
*) arg=$(sanitize_path ${OPTARG});;
esac
fi
eval set -- "$options"
while :; do
case "$1" in
-h | --help) usage && exit 1;;
-c | --conf) CONF_DIR=$2; shift 2;;
-r | --repo) REPO=$2; shift 2;;
-e | --email) EMAIL=$2; shift 2;;
-n | --no-email) SEND_EMAIL=N; shift 2;;
*) break;;
esac
done
case "$opts" in
c) CONF_DIR=$arg; check_args $opts path $arg ;;
r) REPO=$arg; check_args $opts url $arg ;;
e) EMAIL=$arg; check_args $opts email $arg ;;
n) SEND_EMAIL=N ;;
v) check_version ;;
h) usage ;;
\?) usage ;;
:) check_args $OPTARG none none ;;
esac
done
}
main() {