97 lines
2.6 KiB
Bash
Executable File
97 lines
2.6 KiB
Bash
Executable File
#!/bin/sh
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# Copyleft https://git.k8s.astropenguin.net/penguin/s3-arch-utils
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# ##
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# Reference
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# https://docs.aws.amazon.com/AmazonS3/latest/API/sig-v4-header-based-auth.html
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#
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# Usage
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# arch_upload_aws4.sh path/in/bucket file_name.ext
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#
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# Description
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# Upload file_name.ext to path/in/bucket
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# * file_name.ext must not contain special characters
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# * path/in/bucket must not contain special characters
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#
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# Env vars
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# ARCH_S3_BUCKET_URL The bucket url, e.g. my-bucket.s3.us-west-004.backblazeb2.com
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# ARCH_S3_AUTH In the format of ACCESS_KEY:SECRET_KEY
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# #
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_PATH=$1
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_FILE=$2
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if [ -z "$_PATH" ]; then
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echo "Please define a path"
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exit 1
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fi
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if [ ! -f "$_FILE" ]; then
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echo "File does not exist"
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exit 1
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fi
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if [ -z "$ARCH_S3_BUCKET_URL" ]; then
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echo "Env ARCH_S3_BUCKET_URL is required"
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exit 1
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fi
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function _str { printf "%s" $@; }
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function _stre { printf $( echo -n "$@" | sed "s/%/%%/g" ); }
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BUCKET_NAME=$( _str $ARCH_S3_BUCKET_URL | cut -d'.' -f1 )
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SERVICE=$( _str $ARCH_S3_BUCKET_URL | cut -d'.' -f2 )
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REGION=$( _str $ARCH_S3_BUCKET_URL | cut -d'.' -f3 )
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ACCESS_KEY=$( _str $ARCH_S3_AUTH | cut -d':' -f1 )
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SECRET_KEY=$( _str $ARCH_S3_AUTH | cut -d':' -f2 )
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BUCKET_URL=$ARCH_S3_BUCKET_URL
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_FILE_SHA=$( sha256sum "$_FILE" | cut -d' ' -f1 )
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if [ $? -ne 0 ]; then
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exit 1
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fi
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_DATE=$( date -u +"%Y%m%d" )
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_DTIME=$( date -u +"%Y%m%dT%H%M%SZ" )
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_HEADERS="content-length;content-type;host;x-amz-content-sha256;x-amz-date"
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_CTYPE="application/octet-stream"
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_CLEN=$( wc -c < $_FILE | tr -d ' ' )
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# Canon Request
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_C="PUT"
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_C="$_C\n/$_PATH/$_FILE"
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_C="$_C\n" # No query string here
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_C="$_C\ncontent-length:$_CLEN"
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_C="$_C\ncontent-type:$_CTYPE"
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_C="$_C\nhost:$BUCKET_URL"
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_C="$_C\nx-amz-content-sha256:$_FILE_SHA"
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_C="$_C\nx-amz-date:$_DTIME"
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_C="$_C\n"
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_C="$_C\n$_HEADERS"
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_C="$_C\n$_FILE_SHA"
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# String to Sign
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_S="AWS4-HMAC-SHA256"
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_S="$_S\n$_DTIME"
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_S="$_S\n$_DATE/$REGION/$SERVICE/aws4_request"
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_S="$_S\n$( _stre "$_C" | sha256sum | cut -d' ' -f1 )"
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function _HMAC { _stre "$2" | openssl dgst -sha256 -hex -mac HMAC -macopt "$1" | cut -d' ' -f2; }
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SIG=$( _HMAC "key:AWS4$SECRET_KEY" "$_DATE" )
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SIG=$( _HMAC "hexkey:$SIG" "$REGION" )
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SIG=$( _HMAC "hexkey:$SIG" "$SERVICE" )
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SIG=$( _HMAC "hexkey:$SIG" "aws4_request" )
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SIG=$( _HMAC "hexkey:$SIG" "$_S" )
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echo "Upload Target $_FILE -> $BUCKET_URL/$_PATH/$_FILE"
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curl -XPUT -T $_FILE \
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-H "Content-Type: $_CTYPE" \
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-H "Content-Length: $_CLEN" \
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-H "X-Amz-Content-SHA256: $_FILE_SHA" \
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-H "X-Amz-Date: $_DTIME" \
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-H "Authorization: AWS4-HMAC-SHA256 Credential=$ACCESS_KEY/$_DATE/$REGION/$SERVICE/aws4_request,SignedHeaders=$_HEADERS,Signature=$SIG" \
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"https://$BUCKET_URL/$_PATH/$_FILE"
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