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goldilocks.js
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Goldilocks
==========
The node.js netserver that's just right.
* **HTTPS Web Server** with Automatic TLS (SSL) via ACME ([Let's Encrypt](https://letsencrypt.org))
* Static Web Server
* URL Redirects
* SSL on localhost (with bundled localhost.daplie.me certificates)
* Uses node cluster to take advantage of multiple CPUs (in progress)
* **TLS** name-based (SNI) proxy
* **TCP** port-based proxy
* WS **Tunnel Server** (i.e. run on Digital Ocean and expose a home-firewalled Raspberry Pi to the Internet)
* WS **Tunnel Client** (i.e. run on a Raspberry Pi and connect to a Daplie Tunnel)
* UPnP / NAT-PMP forwarding and loopback testing (in progress)
* Configurable via API
* mDNS Discoverable (configure in home or office with mobile and desktop apps)
* OAuth3 Authentication
Install Standalone
-------
```bash
# v1 in npm
npm install -g goldilocks
# v1 in git (via ssh)
npm install -g git+ssh://git@git.daplie.com:Daplie/goldilocks.js#v1
# v1 in git (unauthenticated)
npm install -g git+https://git@git.daplie.com:Daplie/goldilocks.js#v1
```
```bash
goldilocks
```
```bash
Serving /Users/foo/ at https://localhost.daplie.me:8443
```
Install as a System Service (daemon-mode)
We have service support for
* systemd (Linux, Ubuntu)
* launchd (macOS)
```bash
curl https://git.daplie.com/Daplie/goldilocks.js/raw/master/install.sh | bash
```
Modules & Configuration
-----
Goldilocks has several core systems, which all have their own configuration and
some of which have modules:
* [http](#http)
- [proxy (reverse proxy)](#httpproxy-how-to-reverse-proxy-ruby-python-etc)
- [static](#httpstatic-how-to-serve-a-web-page)
- [redirect](#httpredirect-how-to-redirect-urls)
* [tls](#tls)
- [proxy (reverse proxy)](#tlsproxy)
- [acme](#tlsacme)
* [tcp](#tcp)
- [forward](#tcpforward)
* [udp](#udp)
- [forward](#udpforward)
* [domains](#domains)
* [tunnel_server](#tunnel_server)
* [tunnel_client](#tunnel)
* [mdns](#mdns)
* [socks5](#socks5)
* api
All modules require a `type` and an `id`, and any modules not defined inside the
`domains` system also require a `domains` field (with the exception of the `forward`
modules that require the `ports` field).
### http
The HTTP system handles plain http (TLS / SSL is handled by the tls system)
Example config:
```yml
http:
trust_proxy: true # allow localhost, 192.x, 10.x, 172.x, etc to set headers
allow_insecure: false # allow non-https even without proxy https headers
primary_domain: example.com # attempts to access via IP address will redirect here
# An array of modules that define how to handle incoming HTTP requests
modules:
- type: static
domains:
- example.com
root: /srv/www/:hostname
```
### http.proxy - how to reverse proxy (ruby, python, etc)
The proxy module is for reverse proxying, typically to an application on the same machine.
(Though it can also reverse proxy to other devices on the local network.)
It has the following options:
```
address The DNS-resolvable hostname (or IP address) and port connected by `:` to proxy the request to.
Takes priority over host and port if they are also specified.
ex: locahost:3000
ex: 192.168.1.100:80
host The DNS-resolvable hostname (or IP address) of the system to which the request will be proxied.
Defaults to localhost if only the port is specified.
ex: localhost
ex: 192.168.1.100
port The port on said system to which the request will be proxied
ex: 3000
ex: 80
```
Example config:
```yml
http:
modules:
- type: proxy
domains:
- api.example.com
host: 192.168.1.100
port: 80
- type: proxy
domains:
- www.example.com
address: 192.168.1.16:80
- type: proxy
domains:
- '*'
port: 3000
```
### http.static - how to serve a web page
The static module is for serving static web pages and assets and has the following options:
```
root The path to serve as a string.
The template variable `:hostname` represents the HTTP Host header without port information
ex: `root: /srv/www/example.com` would load the example.com folder for any domain listed
ex: `root: /srv/www/:hostname` would load `/srv/www/example.com` if so indicated by the Host header
```
Example config:
```yml
http:
modules:
- type: static
domains:
- example.com
root: /srv/www/:hostname
```
### http.redirect - how to redirect URLs
The redirect module is for, you guessed it, redirecting URLs.
It has the following options:
```
status The HTTP status code to issue (301 is usual permanent redirect, 302 is temporary)
ex: 301
from The URL path that was used in the request.
The `*` wildcard character can be used for matching a full segment of the path
ex: /photos/
ex: /photos/*/*/
to The new URL path which should be used.
If wildcards matches were used they will be available as `:1`, `:2`, etc.
ex: /pics/
ex: /pics/:1/:2/
```
Example config:
```yml
http:
modules:
- type: proxy
domains:
- example.com
status: 301
from: /archives/*/*/*/
to: https://example.net/year/:1/month/:2/day/:3/
```
### tls
The tls system handles encrypted connections, including fetching certificates,
and uses ServerName Indication (SNI) to determine if the connection should be
handled by the http system, a tls system module, or rejected.
Example config:
```yml
tls:
modules:
- type: proxy
domains:
- example.com
- example.net
address: '127.0.0.1:6443'
```
Certificates are saved to `~/acme`, which may be `/var/www/acme` if Goldilocks is run as the www-data user.
### tls.proxy
The proxy module routes the traffic based on the ServerName Indication (SNI) **without decrypting** it.
It has the same options as the [HTTP proxy module](#httpproxy-how-to-reverse-proxy-ruby-python-etc).
Example config:
```yml
tls:
modules:
- type: proxy
domains:
- example.com
address: '127.0.0.1:5443'
```
### tls.acme
The acme module defines the setting used when getting new certificates.
It has the following options:
```
email The email address for ACME certificate issuance
ex: john.doe@example.com
server The ACME server to use
ex: https://acme-v01.api.letsencrypt.org/directory
ex: https://acme-staging.api.letsencrypt.org/directory
challenge_type The ACME challenge to request
ex: http-01, dns-01, tls-01
```
Example config:
```yml
tls:
modules:
- type: acme
domains:
- example.com
- example.net
email: 'joe.shmoe@example.com'
server: 'https://acme-staging.api.letsencrypt.org/directory'
challenge_type: 'http-01'
```
### tcp
The tcp system handles all tcp network traffic **before decryption** and may use port numbers
or traffic sniffing to determine how the connection should be handled.
It has the following options:
```
bind An array of numeric ports on which to bind
ex: 80
```
Example Config:
```yml
tcp:
bind:
- 22
- 80
- 443
modules:
- type: forward
ports:
- 22
address: '127.0.0.1:2222'
```
### tcp.forward
The forward module routes traffic based on port number **without decrypting** it.
In addition to the same options as the [HTTP proxy module](#httpproxy-how-to-reverse-proxy-ruby-python-etc),
the TCP forward modules also has the following options:
```
ports A numeric array of source ports
ex: 22
```
Example Config:
```yml
tcp:
bind:
- 22
- 80
- 443
modules:
- type: forward
ports:
- 22
port: 2222
```
### udp
The udp system handles all udp network traffic. It currently only supports
forwarding the messages without any examination.
It has the following options:
```
bind An array of numeric ports on which to bind
ex: 53
```
Example Config:
```yml
udp:
bind:
- 53
modules:
- type: forward
ports:
- 53
address: '127.0.0.1:8053'
```
### udp.forward
The forward module routes traffic based on port number **without decrypting** it.
It has the same options as the [TCP forward module](#tcpforward).
Example Config:
```yml
udp:
bind:
- 53
modules:
- type: forward
ports:
- 53
address: '127.0.0.1:8053'
```
### domains
To reduce repetition defining multiple modules that operate on the same domain
name the `domains` field can define multiple modules of multiple types for a
single list of names. The modules defined this way do not need to have their
own `domains` field.
Example Config
```yml
domains:
names:
- example.com
- www.example.com
- api.example.com
modules:
tls:
- type: acme
email: joe.schmoe@example.com
challenge_type: 'http-01'
http:
- type: redirect
from: /deprecated/path
to: /new/path
- type: proxy
port: 3000
```
### tunnel\_server
The tunnel server system is meant to be run on a publicly accessible IP address to server tunnel clients
which are behind firewalls, carrier-grade NAT, or otherwise Internet-connect but inaccessible devices.
It has the following options:
```
secret A 128-bit or greater string to use for signing tokens (HMAC JWT)
ex: abc123
servernames An array of string servernames that should be captured as the
tunnel server, ignoring the TLS forward module
ex: api.tunnel.example.com
```
Example config:
```yml
tunnel_server:
secret: abc123def456ghi789
servernames:
- 'api.tunnel.example.com'
```
### tunnel
The tunnel client is meant to be run from behind a firewalls, carrier-grade NAT,
or otherwise inaccessible devices to allow them to be accessed publicly on the
internet.
### ddns
TODO
### mdns
enabled by default
Although it does not announce itself, Goldilocks is discoverable via mDNS with the special query `_cloud._tcp.local`.
This is so that it can be easily configured via Desktop and Mobile apps when run on devices such as a Raspberry Pi or
SOHO servers.
```yaml
mdns:
disabled: false
port: 5353
broadcast: '224.0.0.251'
ttl: 300
```
You can discover goldilocks with `mdig`.
```
npm install -g git+https://git.daplie.com/Daplie/mdig.git
mdig _cloud._tcp.local
```
### socks5
Run a Socks5 proxy server.
```yaml
socks5:
enable: true
port: 1080
```
### api
See [API.md](/API.md)
@tigerbot: How are the APIs used (in terms of URL, Method, Headers, etc)?
TODO
----
* [ ] http - nowww module
* [ ] http - Allow match styles of `www.*`, `*`, and `*.example.com` equally
* [ ] http - redirect based on domain name (not just path)
* [ ] tcp - bind should be able to specify localhost, uniquelocal, private, or ip
* [ ] tcp - if destination host is omitted default to localhost, if dst port is missing, default to src
* [ ] sys - `curl https://daplie.me/goldilocks | bash -s example.com`
* [ ] oauth3 - `example.com/.well-known/domains@oauth3.org/directives.json`
* [ ] oauth3 - commandline questionnaire
* [x] modules - use consistent conventions (i.e. address vs host + port)
* [x] tls - tls.acme vs tls.modules.acme
* [ ] tls - forward should be able to match on source port to reach different destination ports
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