docker-tor-hidden-service

Create a tor hidden service with a link

# run a container with a network application
$ docker run -d --name hello_world tutum/hello-world

# and just link it to this container
$ docker run -ti --link hello_world goldy/tor-hidden-service

The .onion URLs are displayed to stdout at startup.

To keep onion keys, just mount volume /var/lib/tor/hidden_service/

$ docker run -ti --link something --volume /path/to/keys:/var/lib/tor/hidden_service/ goldy/tor-hidden-service

Look at the docker-compose.yml file to see how to use it.

Setup

Set private key

Private key is settable by environment or by copying file in hostname/private_key in docket volume (hostname is the link name).

It's easier to pass key in environment with docker-compose.

    links:
      - hello
      - world
    environment:
        # Set private key
        HELLO_KEY: |
            -----BEGIN RSA PRIVATE KEY-----
            MIICXQIBAAKBgQDR8TdQF9fDlGhy1SMgfhMBi9TaFeD12/FK27TZE/tYGhxXvs1C
            NmFJy1hjVxspF5unmUsCk0yEsvEdcAdp17Vynz6W41VdinETU9yXHlUJ6NyI32AH
            dnFnHEcsllSEqD1hPAAvMUWwSMJaNmBEFtl8DUMS9tPX5fWGX4w5Xx8dZwIDAQAB
            AoGBAMb20jMHxaZHWg2qTRYYJa8LdHgS0BZxkWYefnBUbZn7dOz7mM+tddpX6raK
            8OSqyQu3Tc1tB9GjPLtnVr9KfVwhUVM7YXC/wOZo+u72bv9+4OMrEK/R8xy30XWj
            GePXEu95yArE4NucYphxBLWMMu2E4RodjyJpczsl0Lohcn4BAkEA+XPaEKnNA3AL
            1DXRpSpaa0ukGUY/zM7HNUFMW3UP00nxNCpWLSBmrQ56Suy7iSy91oa6HWkDD/4C
            k0HslnMW5wJBANdz4ehByMJZmJu/b5y8wnFSqep2jmJ1InMvd18BfVoBTQJwGMAr
            +qwSwNXXK2YYl9VJmCPCfgN0o7h1AEzvdYECQAM5UxUqDKNBvHVmqKn4zShb1ugY
            t1RfS8XNbT41WhoB96MT9P8qTwlniX8UZiwUrvNp1Ffy9n4raz8Z+APNwvsCQQC9
            AuaOsReEmMFu8VTjNh2G+TQjgvqKmaQtVNjuOgpUKYv7tYehH3P7/T+62dcy7CRX
            cwbLaFbQhUUUD2DCHdkBAkB6CbB+qhu67oE4nnBCXllI9EXktXgFyXv/cScNvM9Y
            FDzzNAAfVc5Nmbmx28Nw+0w6pnpe/3m0Tudbq3nHdHfQ
            -----END RSA PRIVATE KEY-----            

Options are set using the following pattern: LINKNAME_KEY

Setup port

Caution: Using PORT_MAP with multiple ports on single service will cause tor to fail.

Use link setting in environment with the following pattern: LINKNAME_PORTS.

Like docker, first port is exposed port and the second one is service internal port.

links:
  - hello
  - world
  - hey
environment:
    # Set mapping ports
    HELLO_PORTS: 80:80

    # Multiple ports can be coma separated
    WORLD_PORTS: 8000:80,8888:80,22:22

    # Socket mapping is supported
    HEY_PORTS: 80:unix:/var/run/socket.sock

DEPRECATED: By default, ports are the same as linked containers, but a default port can be mapped using PORT_MAP environment variable.

Socket

To increase security, it's possible to setup your service through socket between containers and turn off network in your app container. See docker-compose.v2.sock.yml for an example.

Warning: Due to a bug in tor configuration parser, it's not possible to mix network link and socket link in the same tor configuration.

Group services

Multiple services can be hosted behind the same onion address.

links:
  - hello
  - world
  - hey
environment:
    # Set mapping ports
    HELLO_PORTS: 80:80

    # Multiple ports can be coma separated
    WORLD_PORTS: 8000:80,8888:80,22:22

    # Socket mapping is supported
    HEY_PORTS: 80:unix:/var/run/socket.sock

    # hello and world will share the same onion address
    # Service name can be any string as long there is not special char
    HELLO_SERVICE_NAME: foo
    WORLD_SERVICE_NAME: foo

Warning: Be carefull to not use the same exposed ports for grouped services.

Compose v2 support

Links setting are required when using docker-compose v2. See docker-compose.v2.yml for example.

Copose v3 support and secrets

Links setting are required when using docker-compose v3. See docker-compose.v3.yml for example.

Secrets

Secret key can be set through docker secrets, see docker-compose.v3.yml for example.

Tools

A command line tool onions is available in container to get .onion url when container is running.

# Get services
$ docker exec -ti torhiddenproxy_tor_1 onions
hello: vegm3d7q64gutl75.onion:80
world: b2sflntvdne63amj.onion:80

# Get json
$ docker exec -ti torhiddenproxy_tor_1 onions --json
{"hello": ["b2sflntvdne63amj.onion:80"], "world": ["vegm3d7q64gutl75.onion:80"]}

Auto reload

Changing /etc/tor/torrc file trigger a SIGHUP signal to tor to reload configuration.

To disable this behavior, add ENTRYPOINT_DISABLE_RELOAD in environment.

pyentrypoint

This container is using pyentrypoint to generate its setup.

If you need to use the legacy version, please checkout the legacy branch or pull goldy/tor-hidden-service:legacy.