status-desktop/scripts/rpc.sh

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#!/usr/bin/env bash
# vim: set ft=sh:
RPC_PORT="${RPC_PORT:-8545}"
RPC_HOST="${RPC_HOST:-127.0.0.1}"
METHOD="$1"
shift
PARAMS=("$@")
if [[ -z "${METHOD}" ]]; then
echo "No method specified!" >&2
exit 1
fi
if [[ -n "${PARAMS}" ]]; then
PARAMS_STR=$(printf '%s\",\"' "${PARAMS[@]}")
# Params are a nested array because of a bug in nim-json-rpc.
# https://github.com/status-im/nim-json-rpc/issues/90
PARAMS_STR="[\"${PARAMS_STR%%\",\"}\"]"
else
PARAMS_STR=''
fi
PAYLOAD="{
\"id\": 1,
\"jsonrpc\": \"2.0\",
\"method\": \"${METHOD}\",
\"params\": [${PARAMS_STR}]
}"
# The jq script checks if error exists and adjusts exit code.
curl --request POST \
--silent \
--show-error \
--fail-with-body \
--header 'Content-type:application/json' \
--data "${PAYLOAD}" \
"${RPC_HOST}:${RPC_PORT}" | \
jq -e '., if .error != null then null|halt_error(2) else halt end'