Addax

Simple HTTP proxy to serve private S3 files to authenticated clients.

Installation

npm install -g addax

Getting started

addax exposes the contents of a (configurable) s3 (or MinIO) bucket to HTTP clients. The clients trying to access the files must authenticate themselves providing a token parameter in the url. Each token grants (recursive) access to one (and only one) directory in the bucket. If the request does not have a token or if the provided token does not match the directory in the requested path, the request is denied. If the authentication is successful, addax will generate the corresponding presigned s3 url for the requested file and answer with a redirection.

The commands addax adduser <s3-user-directory> and addax rmuser <s3-user-directory> are used to generate or remove a token for the given directory. is the name of the directory stored in the root of the S3 bucket. It should not contain slashes.

addax adduser user1

To generate a shareable url use addax sign <s3-user-directory> <filepath>. Keep in mind that <filepath> should be relative to <s3-user-directory>.

addax sign user1 some/path/file.txt

To start the server use addax start <port>.

Requirements

addax uses the aws command line interface utilities to generate the presigned urls. For that reason, the aws command must be installed on the system and configured with the correct user account and region. The command aws configure provides an interactive wizard to set up this configuration.

Configuration

In addition to aws, addax need some configuration of its own. The host used for the generated signed urls and the s3 bucket must be specified in the file named config.json inside addax's directory. This file is expected to have the following structure:

{
  "rootPath": "s3-bucket",
  "endpoint": "http://user:pass@localhost:9000",
  "host": "localhost:3000"
}

The property rootPath can take just the name of the s3 bucket("public-files"), or a bucket and a path inside that bucket ("files/shared/public").

The property endpoint must be only included when pointing to a MinIO server. AWS S3 will be used as default if no endpoint is specified.

The property host is used by the addax sign command to generate signed urls. It should be the public domain or IP of the server running addax.

Docker

If you want to run the app with docker just run docker run addax -e AWS_ACCESS_KEY_ID=youraccesskey -e AWS_SECRET_ACCESS_KEY=yoursecretaccesskey. Remember to have auth.json and config.json when you run, either way it will fail.

Also if you dont want to build the container locally you can dowload addax from DockerHub https://hub.docker.com/r/seetransparent/addax