Added arch_upload_aws4.sh

arch_upload_aws4.sh

@@ -0,0 +1,88 @@
+#!/bin/sh
+# Copyleft
+
+# ##
+# Reference
+#   https://docs.aws.amazon.com/AmazonS3/latest/API/sig-v4-header-based-auth.html
+#
+# Usage
+#   arch_upload_aws4.sh path/in/bucket file_name.ext
+#
+# Env vars
+#   ARCH_S3_BUCKET_URL  The bucket url, e.g. my-bucket.s3.us-west-004.backblazeb2.com
+#   ARCH_S3_AUTH        In the format of ACCESS_KEY:SECRET_KEY
+# #
+
+_PATH=$1
+_FILE=$2
+
+if [ -z "$_PATH" ]; then
+	echo "Please define a path"
+	exit 1
+fi
+
+if [ ! -f "$_FILE" ]; then
+	echo "File does not exist"
+	exit 1
+fi
+
+if [ -z "$ARCH_S3_BUCKET_URL" ]; then
+	echo "Env ARCH_S3_BUCKET_URL is required"
+	exit 1
+fi
+
+BUCKET_NAME=$( echo -n $ARCH_S3_BUCKET_URL | cut -d'.' -f1 )
+SERVICE=$( echo -n $ARCH_S3_BUCKET_URL | cut -d'.' -f2 )
+REGION=$( echo -n $ARCH_S3_BUCKET_URL | cut -d'.' -f3 )
+ACCESS_KEY=$( echo -n $ARCH_S3_AUTH | cut -d':' -f1 )
+SECRET_KEY=$( echo -n $ARCH_S3_AUTH | cut -d':' -f2 )
+
+BUCKET_URL=$ARCH_S3_BUCKET_URL
+
+_FILE_SHA=$( sha256sum "$_FILE" | cut -d' ' -f1 )
+if [ $? -ne 0 ]; then
+	exit 1
+fi
+
+_DATE=$( date -u +"%Y%m%d" )
+_DTIME=$( date -u +"%Y%m%dT%H%M%SZ" )
+_HEADERS="content-length;content-type;host;x-amz-content-sha256;x-amz-date"
+_CTYPE="application/octet-stream"
+_CLEN=$( wc -c $_FILE | cut -d' ' -f1 )
+
+# Canon Request
+_C="PUT"
+_C="$_C\n/$_PATH/$_FILE"
+_C="$_C\n" # No query string here
+_C="$_C\ncontent-length:$_CLEN"
+_C="$_C\ncontent-type:$_CTYPE"
+_C="$_C\nhost:$BUCKET_URL"
+_C="$_C\nx-amz-content-sha256:$_FILE_SHA"
+_C="$_C\nx-amz-date:$_DTIME"
+_C="$_C\n"
+_C="$_C\n$_HEADERS"
+_C="$_C\n$_FILE_SHA"
+
+# String to Sign
+_S="AWS4-HMAC-SHA256"
+_S="$_S\n$_DTIME"
+_S="$_S\n$_DATE/$REGION/$SERVICE/aws4_request"
+_S="$_S\n$( echo -ne "$_C" | sha256sum | cut -d' ' -f1 )"
+
+function _HMAC { echo -ne "$2" | openssl dgst -sha256 -hex -mac HMAC -macopt "$1" | cut -d' ' -f2; }
+
+SIG=$( _HMAC "key:AWS4$SECRET_KEY" "$_DATE" )
+SIG=$( _HMAC "hexkey:$SIG" "$REGION" )
+SIG=$( _HMAC "hexkey:$SIG" "$SERVICE" )
+SIG=$( _HMAC "hexkey:$SIG" "aws4_request" )
+SIG=$( _HMAC "hexkey:$SIG" "$_S" )
+
+echo "Upload Target $_FILE -> $BUCKET_URL/$_PATH/$_FILE"
+
+curl -XPUT -T $_FILE \
+  -H "Content-Type: $_CTYPE" \
+  -H "Content-Length: $_CLEN" \
+  -H "X-Amz-Content-SHA256: $_FILE_SHA" \
+  -H "X-Amz-Date: $_DTIME" \
+  -H "Authorization: AWS4-HMAC-SHA256 Credential=$ACCESS_KEY/$_DATE/$REGION/$SERVICE/aws4_request,SignedHeaders=$_HEADERS,Signature=$SIG" \
+  "https://$BUCKET_URL/$_PATH/$_FILE"