#!/bin/sh
# FUNCTIONS ###########################################################
# script usage
usage() {
>&2 cat <<EOF
ADLIN token generator
EOF
}
# token generator
token_generator() {
{
echo -n ${PKEY}
for d
do
echo -n :${d}
done
} | sha512sum | cut -d ' ' -f 1
# JSON token format helper
token_format() {
local TID=$1
local TOKEN=$2
shift 2
[ $# -gt 0 ] && {
local DATA=',
"data": [';
for d; do
[ -z "$Z" ] && Z=1 || DATA="$DATA, "
DATA="$DATA\"$d\""
DATA="$DATA]"
local challenge=
[ -z "${TID}" ] || {
challenge="
\"challenge\": ${TID},"
"login": "${ULGN}",${challenge}
"token": "${TOKEN}"${DATA}
# /proc/cmdline parser (from Gentoo Wiki)
cmdline() {
local value
value=" $(cat /proc/cmdline) "
value="${value##* $1=}"
value="${value%% *}"
[ "$value" != "" ] && echo "$value"
# GLOBAL VARIABLES ####################################################
ULGN=$(cmdline adlin.login)
PKEY=$(cmdline adlin.key)
# MAIN ################################################################
[ $# -lt 1 ] && { usage; exit 1; }
TOKENID="$1"
case "${TOKENID}" in
token1|token2)
HDATA=42
;;
token3|token6)
DATA=$(date +%s%N)
token4)
echo "${TOKENID} is not here! Perhaps it has been accidentally deleted?" >&2
exit 2
token5)
HDATA=$(dig +short +time=1 +tries=0 adlin.nemunai.re $2 | sed 's/"//g') || {
echo "Try again! Your resolver settings seems not good :(" >&2
exit 3
echo $HDATA | grep "not here" 2> /dev/null && exit 3
*)
DATA=$@
TOKENID=
esac
token_format "${TOKENID#token}" "$(token_generator ${TOKENID#token} ${HDATA} ${DATA})" ${DATA}