Upload a File to Minio with Curl and Zero External Libraries or Programs

upload_to_minio.sh

#!/usr/bin/env sh

# Example: ./upload_to_minio example.url.com username password bucket-name internal/minio/path /absolute/path/file.txt.zst

if [ -z $1 ]; then
  echo "You have NOT specified a MINIO URL!"
  exit 1
fi

if [ -z $2 ]; then
  echo "You have NOT specified a USERNAME!"
  exit 1
fi

if [ -z $3 ]; then
  echo "You have NOT specified a PASSWORD!"
  exit 1
fi

if [ -z $4 ]; then
  echo "You have NOT specified a BUCKET!"
  exit 1
fi

if [ -z $5 ]; then
  echo "You have NOT specified a UPLOAD PATH!"
  exit 1
fi

if [ -z $6 ]; then
  echo "You have NOT specified a UPLOAD FILE!"
  exit 1
fi


# User Minio Vars
URL=$1
USERNAME=$2
PASSWORD=$3
BUCKET=$4
FILE_NAME=$(basename $6)
OBJ_PATH="/${BUCKET}/$5/${FILE_NAME}"

# Static Vars
DATE=$(date -R --utc)
CONTENT_TYPE='application/zstd'
SIG_STRING="PUT\n\n${CONTENT_TYPE}\n${DATE}\n${OBJ_PATH}"
SIGNATURE=`echo -en ${SIG_STRING} | openssl sha1 -hmac ${PASSWORD} -binary | base64`

curl --silent -v -X PUT -T "${FILE}" \
    -H "Host: $URL" \
    -H "Date: ${DATE}" \
    -H "Content-Type: ${CONTENT_TYPE}" \
    -H "Authorization: AWS ${USERNAME}:${SIGNATURE}" \
    https://$URL${OBJ_PATH}

I propose to do set -eu at the beginning and adjusting ${FILE} in line 50 which is unbound. Finally it should read »an UPLOAD« to be correct.

Does not work for me: with --utc I get AWS authentication requires a valid Date or x-amz-date header and without it The request signature we calculated does not match the signature you provided

(Trying to send a file to minIO ver. 2019-03-20T22:38:47Z, maybe the version is just too old for this script)