linx-server

Self-hosted file/media sharing website.

Demo

You can see what it looks like using the demo: https://demo.linx-server.net/

Features

• Display common filetypes (image, video, audio, markdown, pdf)
• Display syntax-highlighted code with in-place editing
• Documented API with keys if need to restrict uploads (can use linx-client for uploading through command-line)
• Torrent download of files using web seeding
• File expiry, deletion key, file access key, and random filename options

Screenshots

Getting started

Using Docker

1. Create directories files and meta and run chown -R 65534:65534 meta && chown -R 65534:65534 files
2. Create a config file (example provided in repo), we'll refer to it as linx-server.conf in the following examples

Example running

docker run -p 8080:8080 -v /path/to/linx-server.conf:/data/linx-server.conf -v /path/to/meta:/data/meta -v /path/to/files:/data/files andreimarcu/linx-server -config /data/linx-server.conf

Example with docker-compose

version: '2.2'
services:
  linx-server:
    container_name: linx-server
    image: andreimarcu/linx-server
    entrypoint: /usr/local/bin/linx-server 
    command: -config /data/linx-server.conf
    volumes:
      - /path/to/files:/data/files
      - /path/to/meta:/data/meta
      - /path/to/linx-server.conf:/data/linx-server.conf
    network_mode: bridge
    ports:
      - "8080:8080"
    restart: unless-stopped

Ideally, you would use a reverse proxy such as nginx or caddy to handle TLS certificates.

Using a binary release

1. Grab the latest binary from the releases
2. Run ./linx-server

Usage

Configuration

All configuration options are accepted either as arguments or can be placed in a file as such (see example file linx-server.conf.example in repo):

bind = 127.0.0.1:8080
sitename = myLinx
maxsize = 4294967296
maxexpiry = 86400
# ... etc

...and then run linx-server -config path/to/linx-server.conf

Options

Option	Description
bind = 127.0.0.1:8080	what to bind to (default is 127.0.0.1:8080)
sitename = myLinx	the site name displayed on top (default is inferred from Host header)
siteurl = https://mylinx.example.org/	the site url (default is inferred from execution context)
selifpath = selif	path relative to site base url (the "selif" in mylinx.example.org/selif/image.jpg) where files are accessed directly (default: selif)
maxsize = 4294967296	maximum upload file size in bytes (default 4GB)
maxexpiry = 86400	maximum expiration time in seconds (default is 0, which is no expiry)
allowhotlink = true	Allow file hotlinking
contentsecuritypolicy = "..."	Content-Security-Policy header for pages (default is "default-src 'self'; img-src 'self' data:; style-src 'self' 'unsafe-inline'; frame-ancestors 'self';")
filecontentsecuritypolicy = "..."	Content-Security-Policy header for files (default is "default-src 'none'; img-src 'self'; object-src 'self'; media-src 'self'; style-src 'self' 'unsafe-inline'; frame-ancestors 'self';")
refererpolicy = "..."	Referrer-Policy header for pages (default is "same-origin")
filereferrerpolicy = "..."	Referrer-Policy header for files (default is "same-origin")
xframeoptions = "..."	X-Frame-Options header (default is "SAMEORIGIN")
remoteuploads = true	(optionally) enable remote uploads (/upload?url=https://...)
nologs = true	(optionally) disable request logs in stdout
force-random-filename = true	(optionally) force the use of random filenames
custompagespath = custom_pages/	(optionally) specify path to directory containing markdown pages (must end in .md) that will be added to the site navigation (this can be useful for providing contact/support information and so on). For example, custom_pages/My_Page.md will become My Page in the site navigation

Cleaning up expired files

When files expire, access is disabled immediately, but the files and metadata will persist on disk until someone attempts to access them. You can set the following option to run cleanup every few minutes. This can also be done using a separate utility found the linx-cleanup directory.

Option	Description
cleanup-every-minutes = 5	How often to clean up expired files in minutes (default is 0, which means files will be cleaned up as they are accessed)

Require API Keys for uploads

Option	Description
authfile = path/to/authfile	(optionally) require authorization for upload/delete by providing a newline-separated file of scrypted auth keys
remoteauthfile = path/to/remoteauthfile	(optionally) require authorization for remote uploads by providing a newline-separated file of scrypted auth keys
basicauth = true	(optionally) allow basic authorization to upload or paste files from browser when -authfile is enabled. When uploading, you will be prompted to enter a user and password - leave the user blank and use your auth key as the password

A helper utility linx-genkey is provided which hashes keys to the format required in the auth files.

Storage backends

The following storage backends are available:

Name	Notes	Options
LocalFS	Enabled by default, this backend uses the filesystem	filespath = files/ -- Path to store uploads (default is files/)

metapath = meta/ -- Path to store information about uploads (default is meta/)| |S3|Use with any S3-compatible provider.

This implementation will stream files through the linx instance (every download will request and stream the file from the S3 bucket). File metadata will be stored as tags on the object in the bucket.

For high-traffic environments, one might consider using an external caching layer such as described in this article.|s3-endpoint = https://... -- S3 endpoint

s3-region = us-east-1 -- S3 region

s3-bucket = mybucket -- S3 bucket to use for files and metadata

s3-force-path-style = true (optional) -- force path-style addresing (e.g. https://s3.amazonaws.com/linx/example.txt)

Environment variables to provide:

AWS_ACCESS_KEY_ID -- the S3 access key

AWS_SECRET_ACCESS_KEY -- the S3 secret key

AWS_SESSION_TOKEN (optional) -- the S3 session token|

SSL with built-in server

Option	Description
certfile = path/to/your.crt	Path to the ssl certificate (required if you want to use the https server)
keyfile = path/to/your.key	Path to the ssl key (required if you want to use the https server)

Use with http proxy

Option	Description
realip = true	let linx-server know you (nginx, etc) are providing the X-Real-IP and/or X-Forwarded-For headers.

Use with fastcgi

Option	Description
fastcgi = true	serve through fastcgi

Deployment

Linx-server supports being deployed in a subdirectory (ie. example.com/mylinx/) as well as on its own (example.com/).

1. Using fastcgi

A suggested deployment is running nginx in front of linx-server serving through fastcgi. This allows you to have nginx handle the TLS termination for example.
An example configuration:

server {
    ...
    server_name yourlinx.example.org;
    ...

    client_max_body_size 4096M;
    location / {
        fastcgi_pass 127.0.0.1:8080;
        include fastcgi_params;
    }
}

And run linx-server with the fastcgi = true option.

2. Using the built-in https server

Run linx-server with the certfile = path/to/cert.file and keyfile = path/to/key.file options.

3. Using the built-in http server

Run linx-server normally.

Development

Any help is welcome, PRs will be reviewed and merged accordingly.
The official IRC channel is #linx on irc.oftc.net

1. go get -u github.com/andreimarcu/linx-server
2. cd $GOPATH/src/github.com/andreimarcu/linx-server
3. go build && ./linx-server

License

Copyright (C) 2015 Andrei Marcu

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Author

Andrei Marcu, https://andreim.net/