Bash script to upload files to minio object storage using curl

#!/bin/bash
# Configuration
ACCESS_KEY="XXXXXXXXXXXXX"
SECRET_KEY="YYYYYYYYYYYYYY"

MINIO_HOST="api.castorage1.obs.platform.servermart.net"
BUCKET="orangebd"
FILE_PATH=$1 # Pass the filename as an argument

if [ -z "$FILE_PATH" ]; then
echo "Usage: $0 <file-path>"
exit 1
fi

if [ ! -f "$FILE_PATH" ]; then
echo "Error: File '$FILE_PATH' does not exist."
exit 1
fi

FILE_NAME=$(basename "$FILE_PATH")
RESOURCE="/${BUCKET}/${FILE_NAME}"
CONTENT_TYPE="application/octet-stream"
DATE=$(date -R)

# Construct the string to sign
STRING_TO_SIGN="PUT\n\n${CONTENT_TYPE}\n${DATE}\n${RESOURCE}"

# Calculate the signature using OpenSSL
SIGNATURE=$(printf "$STRING_TO_SIGN" | openssl dgst -sha1 -hmac "$SECRET_KEY" -binary | openssl enc -base64)

echo "Starting upload of $FILE_NAME to MinIO API..."

# Create a temporary file to capture the server's actual response body
RESPONSE_FILE=$(mktemp)

# ২. curl কমান্ডে "https://" ব্যবহার করা হয়েছে Force SSL রিডাইরেকশন এড়াতে
curl -X PUT -T "$FILE_PATH" \
-# \
-H "Host: ${MINIO_HOST}" \
-H "Date: ${DATE}" \
-H "Content-Type: ${CONTENT_TYPE}" \
-H "Authorization: AWS ${ACCESS_KEY}:${SIGNATURE}" \
"https://${MINIO_HOST}${RESOURCE}" \
-o "$RESPONSE_FILE" \
-w "\nHTTP Status: %{http_code}\n" 2>&1 | tr '\r' '\n' | awk '
BEGIN { printf "Progress: 0%%" }
/##/ {
match($0, /[0-9]+(\.[0-9]+)?%/);
if (RLENGTH > 0) {
pct = substr($0, RSTART, RLENGTH);
printf "\rProgress: %s", pct;
}
}
/HTTP Status:/ {
print "\n" $0
}
'

# If the upload failed, show the response body error from MinIO
if [ -s "$RESPONSE_FILE" ]; then
echo "--- Server Response Details ---"
cat "$RESPONSE_FILE"
echo ""
fi

rm -f "$RESPONSE_FILE"