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) - [proxy](#tcpproxy) - [forward](#tcpforward) * [udp](#udp) - [forward](#udpforward) * [domains](#domains) * [tunnel_server](#tunnel_server) * [DDNS](#ddns) * [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 index Set to `false` to disable the default behavior of loading `index.html` in directories ex: `false` dotfiles Set to `allow` to load dotfiles rather than ignoring them ex: `"allow"` redirect Set to `false` to disable the default behavior of ensuring that directory paths end in '/' ex: `false` indexes An array of directories which should be have indexes served rather than blocked ex: `[ '/' ]` will allow all directories indexes to be served ``` 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/ ex: https://mydomain.com/photos/: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 both *raw* and *tls-terminated* tcp network traffic (see the _Note_ section below the example). It 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' ``` _Note_: When tcp traffic comes into goldilocks it will be tested against the tcp modules. The connection may be handed to the TLS module if it appears to be a TLS/SSL/HTTPS connection and if the tls module terminates the traffic, the connection will be sent back to the TLS module. Due to the complexity of node.js' networking stack it is not currently possible to tell which port tls-terminated traffic came from, so only the SNI header (serername / domain name) may be used for modules matching terminated TLS. ### tcp.proxy The proxy module routes traffic **after tls-termination** based on the servername (domain name) contained in a SNI header. As such this only works to route TCP connections wrapped in a TLS stream. It has the same options as the [HTTP proxy module](#httpproxy-how-to-reverse-proxy-ruby-python-etc). This is particularly useful for routing ssh and vpn traffic over tcp port 443 as wrapped TLS connections in order to access one of your servers even when connecting from a harsh or potentially misconfigured network environment (i.e. hotspots in public libraries and shopping malls). Example config: ```yml tcp: modules: - type: proxy domains: - _ssh.example.com # Note: this domain would also listed in tls.acme.domains host: localhost port: 22 - type: proxy domains: - _vpn.example.com # Note: this domain would also listed in tls.acme.domains host: localhost port: 1194 ``` _Note_: In same cases network administrators purposefully block ssh and vpn connections using Application Firewalls with DPI (deep packet inspection) enabled. You should read the ToS of the network you are connected to to ensure that you aren't subverting policies that are purposefully in place on such networks. #### Using with ssh In order to use this to route SSH connections you will need to use `ssh`'s `ProxyCommand` option. For example to use the TLS certificate for `_ssh.example.com` to wrap an ssh connection you could use the following command: ```bash ssh user@example.com -o ProxyCommand='openssl s_client -quiet -connect example.com:443 -servername _ssh.example.com' ``` Alternatively you could add the following lines to your ssh config file. ``` Host example.com ProxyCommand openssl s_client -quiet -connect example.com:443 -servername _ssh.example.com ``` #### Using with OpenVPN There are two strategies that will work well for you: 1) [Use ssh](https://redfern.me/tunneling-openvpn-through-ssh/) with the config above to reverse proxy tcp port 1194 to you. ```bash ssh -L 1194:localhost:1194 example.com ``` 2) [Use stunnel]https://serverfault.com/questions/675553/stunnel-vpn-traffic-and-ensure-it-looks-like-ssl-traffic-on-port-443/681497) ``` [openvpn-over-goldilocks] client = yes accept = 127.0.0.1:1194 sni = _vpn.example.com connect = example.com:443 ``` 3) [Use stunnel.js](https://git.daplie.com/Daplie/node-tunnel-client) as described in the "tunnel_server" section below. ### 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. Note that the [tcp.forward](#tcpforward) module is not allowed in a domains group since its routing is not based on domains. 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 dns: - type: 'dns@oauth3.org' token_id: user_token_id - names: - ssh.example.com modules: tls: - type: acme email: john.smith@example.com challenge_type: 'http-01' tcp: - type: proxy port: 22 dns: - type: 'dns@oauth3.org' token_id: user_token_id ``` ### 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' ``` ### DDNS The DDNS module watches the network environment of the unit and makes sure the device is always accessible on the internet using the domains listed in the config. If the device has a public address or if it can automatically set up port forwarding the device will periodically check its public address to ensure the DNS records always point to it. Otherwise it will to connect to a tunnel server and set the DNS records to point to that server. The `loopback` setting specifies how the unit will check its public IP address and whether connections can reach it. Currently only `tunnel@oauth3.org` is supported. If the loopback setting is not defined it will default to using `oauth3.org`. The `tunnel` setting can be used to specify how to connect to the tunnel. Currently only `tunnel@oauth3.org` is supported. The token specified in the `tunnel` setting will be used to acquire the tokens that are used directly with the tunnel server. If the tunnel setting is not defined it will default to try using the tokens in the modules for the relevant domains. If a particular DDNS module has been disabled the device will still try to set up port forwarding (and connect to a tunnel if that doesn't work), but the DNS records will not be updated to point to the device. This is to allow a setup to be tested before transitioning services between devices. ```yaml ddns: disabled: false loopback: type: 'tunnel@oauth3.org' domain: oauth3.org tunnel: type: 'tunnel@oauth3.org' token_id: user_token_id modules: - type: 'dns@oauth3.org' token_id: user_token_id domains: - www.example.com - api.example.com - test.example.com ``` ### 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