119 lines
2.1 KiB
Bash
Executable File
119 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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[ -t 1 ] || init-crypto 2> /dev/null > /dev/null
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# FUNCTIONS ###########################################################
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# script usage
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usage() {
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>&2 cat <<EOF
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ADLIN token generator
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EOF
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}
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# token generator
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token_generator() {
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{
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echo -n ${PKEY}
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for d
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do
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echo -n :${d}
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done
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} | sha512sum | cut -d ' ' -f 1
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}
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# JSON token format helper
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token_format() {
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local TID=$1
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local TOKEN=$2
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shift 2
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[ $# -gt 0 ] && {
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local DATA=',
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"data": [';
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for d; do
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[ -z "$Z" ] && Z=1 || DATA="$DATA, "
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DATA="$DATA\"$d\""
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done
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DATA="$DATA]"
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}
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local challenge=
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[ -z "${TID}" ] || {
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challenge="
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\"challenge\": ${TID},"
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}
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# There is a hidden bonus if you send adlin 42 to
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# adlin.nemunai.re/toctoc
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cat <<EOF
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{
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"login": "${ULGN}",${challenge}
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"token": "${TOKEN}"${DATA}
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}
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EOF
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}
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# /proc/cmdline parser (from Gentoo Wiki)
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cmdline() {
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local value
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value=" $(cat /proc/cmdline) "
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value="${value##* $1=}"
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value="${value%% *}"
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[ "$value" != "" ] && echo "$value"
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}
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# GLOBAL VARIABLES ####################################################
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ULGN=$(cmdline adlin.login)
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PKEY=$(cmdline adlin.key)
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# MAIN ################################################################
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[ $# -lt 1 ] && { usage; exit 1; }
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TOKENID="$1"
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case "${TOKENID}" in
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token1|token2|stage1|stage2)
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HDATA=42
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;;
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token3|token5|stage3|stage5)
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DATA=$(date +%s%N)
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;;
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bonus2)
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echo "${TOKENID} is not here! Perhaps it has been accidentally deleted?" >&2
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exit 2
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;;
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token4|stage4)
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if [ -t 0 ]; then
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HDATA=$(dig +short +time=1 +tries=0 adlin.nemunai.re $2) || {
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echo "Try again! Your resolver settings seems not good :(" >&2
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exit 3
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}
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else
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read HDATA
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fi
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HDATA=$(echo "${HDATA}" | sed 's/["\\]//g')
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echo $HDATA | grep "not here" 2> /dev/null && exit 3
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;;
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*)
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DATA=$@
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TOKENID=
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;;
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esac
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if [ -n "${TOKENID}" ]
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then
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TOKENID="${TOKENID#token}"
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TOKENID="${TOKENID#stage}"
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if [ "$TOKENID" -ne "${TOKENID#bonus}" ]
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then
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TOKENID="${TOKENID#bonus}"
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TOKENID=$(($TOKENID + 5))
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fi
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fi
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token_format "${TOKENID}" "$(token_generator ${TOKENID} ${HDATA} ${DATA})" ${DATA}
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