docker-tor-hidden-service/README.md
2019-04-29 22:37:22 +02:00

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# docker-tor-hidden-service
[![Build Status](https://travis-ci.org/cmehay/docker-tor-hidden-service.svg?branch=master)](https://travis-ci.org/cmehay/docker-tor-hidden-service)
## Setup
### Setup hosts
From 2019, new conf to handle tor v3 address has been added. Here an example with `docker-compose` v2+:
```yaml
version: "2"
services:
tor:
image: goldy/tor-hidden-service:0.3.5.8
links:
- hello
- world
- again
environment:
# Set mapping ports
HELLO_TOR_SERVICE_HOSTS: 80:hello:80,800:hello:80,8888:hello:80
# Set private key
HELLO_TOR_SERVIVE_KEY: |
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
# hello and again will share the same onion v3 address
FOO_TOR_SERVICE_HOSTS: 88:again:80,8000:world:80
FOO_TOR_SERVICE_VERSION: '3'
# tor v3 address private key base 64 encoded
FOO_TOR_SERVICE_KEY: |
PT0gZWQyNTUxOXYxLXNlY3JldDogdHlwZTAgPT0AAACArobDQYyZAWXei4QZwr++
j96H1X/gq14NwLRZ2O5DXuL0EzYKkdhZSILY85q+kfwZH8z4ceqe7u1F+0pQi/sM
hello:
image: tutum/hello-world
hostname: hello
world:
image: tutum/hello-world
hostname: world
again:
image: tutum/hello-world
hostname: again
```
This configuration will output:
```
foo: xwjtp3mj427zdp4tljiiivg2l5ijfvmt5lcsfaygtpp6cw254kykvpyd.onion:88, xwjtp3mj427zdp4tljiiivg2l5ijfvmt5lcsfaygtpp6cw254kykvpyd.onion:8000
hello: 5azvyr7dvvr4cldn.onion:80, 5azvyr7dvvr4cldn.onion:800, 5azvyr7dvvr4cldn.onion:8888
```
#### Environment variables
##### `{SERVICE}_TOR_SERVICE_HOSTS`
The config patern for this variable is: `{exposed_port}:{hostname}:{port}}`
For example `80:hello:8080` will expose a onion service on port 80 to the port 8080 of hello hostname.
You can concatenate services using comas.
##### `{SERVICE}_TOR_SERVICE_VERSION`
Can be `2` or `3`. Set the tor address type.
`2` gives short addresses `5azvyr7dvvr4cldn.onion` and `3` long addresses `xwjtp3mj427zdp4tljiiivg2l5ijfvmt5lcsfaygtpp6cw254kykvpyd.onion`
##### `{SERVICE}_TOR_SERVICE_KEY`
You can set the private key for the current service.
Tor v2 addresses uses RSA PEM keys like:
```
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
```
Tor v3 addresses uses ed25519 binary keys. It should be base64 encoded:
```
PT0gZWQyNTUxOXYxLXNlY3JldDogdHlwZTAgPT0AAACArobDQYyZAWXei4QZwr++j96H1X/gq14NwLRZ2O5DXuL0EzYKkdhZSILY85q+kfwZH8z4ceqe7u1F+0pQi/sM
```
#### 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.
```sh
# 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 triggers a `SIGHUP` signal to `tor` to reload configuration.
To disable this behavior, add `ENTRYPOINT_DISABLE_RELOAD` in environment.
### Versions
Container version will follow tor release versions.
### pyentrypoint
This container uses [`pyentrypoint`](https://github.com/cmehay/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`.
### pytor
This containner uses [`pytor`](https://github.com/cmehay/pytor) to mannages tor cryptography, generate keys and compute onion urls.
# Legacy deprecated doc
ALL THE DOC BELLOW IS LEGACY, IT'S STILL WORKING BUT IT'S NOT RECOMMENDED ANYMORE AND COULD BE DROPPED IN FUTURE RELEASES.
### Create a tor hidden service with a link
```sh
# 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/`
```sh
$ 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.
### 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`.
```yaml
links:
- hello
- world
environment:
# Set private key
HELLO_KEY: |
-----BEGIN RSA PRIVATE KEY-----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-----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.
```yaml
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.
```yaml
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.