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gerd.authelia: added `mine.shared.lib.authelia.mkProtectedWebsite

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Adds authelia in front of any website given, that only members can access
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eyjhb 2024-08-12 23:34:59 +02:00
parent ce2f6d2cb5
commit 2a784ec46f
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2 changed files with 68 additions and 54 deletions
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120
machines/gerd/services/authelia/authelia-nginx.nix
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@ -1,81 +1,95 @@
{ pkgs, ... }:
{ config, lib, pkgs, ... }:
# most is taken from this discussion https://www.reddit.com/r/NixOS/comments/15trmac/how_would_you_do_a_nginx_snippets_in_nixos/
# with the following gist https://gist.github.com/aswan89/ee554406c39eb2eeb3126f73f74ab61c
# updated from the following page, with inspiration from the gist
# https://www.authelia.com/integration/proxies/nginx/
let
AUTHELIA_HOST = "http://localhost:9091";
autheliaLocation = pkgs.writeText "authelia-location.conf" ''
## Essential Proxy Configuration
internal;
proxy_pass ${AUTHELIA_HOST}/api/verify;
## Headers
## The headers starting with X-* are required.
proxy_set_header X-Original-URL $scheme://$http_host$request_uri;
proxy_set_header X-Original-Method $request_method;
proxy_set_header X-Forwarded-Method $request_method;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Host $http_host;
proxy_set_header X-Forwarded-Uri $request_uri;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header Content-Length "";
proxy_set_header Connection "";
## Basic Proxy Configuration
proxy_pass_request_body off;
proxy_next_upstream error timeout invalid_header http_500 http_502 http_503; # Timeout if the real server is dead
proxy_redirect http:// $scheme://;
proxy_http_version 1.1;
proxy_cache_bypass $cookie_session;
proxy_no_cache $cookie_session;
proxy_buffers 4 32k;
client_body_buffer_size 128k;
## Advanced Proxy Configuration
send_timeout 5m;
proxy_read_timeout 240;
proxy_send_timeout 240;
proxy_connect_timeout 240;
## Virtual endpoint created by nginx to forward auth requests.
location /authelia {
## Essential Proxy Configuration
internal;
proxy_pass ${AUTHELIA_HOST}/api/verify;
## Headers
## The headers starting with X-* are required.
proxy_set_header X-Original-Method $request_method;
proxy_set_header X-Original-URL $scheme://$http_host$request_uri;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header Content-Length "";
proxy_set_header Connection "";
## Basic Proxy Configuration
proxy_pass_request_body off;
proxy_next_upstream error timeout invalid_header http_500 http_502 http_503; # Timeout if the real server is dead
proxy_redirect http:// $scheme://;
proxy_http_version 1.1;
proxy_cache_bypass $cookie_session;
proxy_no_cache $cookie_session;
proxy_buffers 4 32k;
client_body_buffer_size 128k;
## Advanced Proxy Configuration
send_timeout 5m;
proxy_read_timeout 240;
proxy_send_timeout 240;
proxy_connect_timeout 240;
}
'';
autheliaRequest = pkgs.writeText "authelia-authrequest.conf" ''
### goes inside a location block to make the request to authelia
## Send a subrequest to Authelia to verify if the user is authenticated and has permission to access the resource.
auth_request /authelia;
## Set the $target_url variable based on the original request.
## Comment this line if you're using nginx without the http_set_misc module.
#set_escape_uri $target_url $scheme://$http_host$request_uri;
## Uncomment this line if you're using NGINX without the http_set_misc module.
set $target_url $scheme://$http_host$request_uri;
## Save the upstream response headers from Authelia to variables.
## Save the upstream metadata response headers from Authelia to variables.
auth_request_set $user $upstream_http_remote_user;
auth_request_set $groups $upstream_http_remote_groups;
auth_request_set $name $upstream_http_remote_name;
auth_request_set $email $upstream_http_remote_email;
## Inject the response headers from the variables into the request made to the backend.
## Inject the metadata response headers from the variables into the request made to the backend.
proxy_set_header Remote-User $user;
proxy_set_header Remote-Groups $groups;
proxy_set_header Remote-Name $name;
proxy_set_header Remote-Email $email;
## If the subreqest returns 200 pass to the backend, if the subrequest returns 401 redirect to the portal.
proxy_set_header Remote-Name $name;
## Configure the redirection when the authz failure occurs. Lines starting with 'Modern Method' and 'Legacy Method'
## should be commented / uncommented as pairs. The modern method uses the session cookies configuration's authelia_url
## value to determine the redirection URL here. It's much simpler and compatible with the mutli-cookie domain easily.
## Modern Method: Set the $redirection_url to the Location header of the response to the Authz endpoint.
# auth_request_set $redirection_url $upstream_http_location;
## Modern Method: When there is a 401 response code from the authz endpoint redirect to the $redirection_url.
# error_page 401 =302 $redirection_url;
## Legacy Method: Set $target_url to the original requested URL.
## This requires http_set_misc module, replace 'set_escape_uri' with 'set' if you don't have this module.
# set_escape_uri $target_url $scheme://$http_host$request_uri;
set $target_url $scheme://$http_host$request_uri;
## Legacy Method: When there is a 401 response code from the authz endpoint redirect to the portal with the 'rd'
## URL parameter set to $target_url. This requires users update 'auth.example.com/' with their external authelia URL.
error_page 401 =302 https://auth.fricloud.dk/?rd=$target_url;
'';
in {
services.nginx.virtualHosts."test.fricloud.dk" = {
mine.shared.lib.authelia.mkProtectedWebsite = virtualHostConfig: lib.recursiveUpdate {
forceSSL = true;
enableACME = true;
locations."/authelia" = {
recommendedProxySettings = false;
extraConfig = ''
include ${autheliaLocation};
'';
};
locations."/" = {
root = pkgs.writeTextDir "index.html" ''
ACCESS GRANTED!
'';
extraConfig = "include ${autheliaLocation};";
extraConfig = ''
include ${autheliaRequest};
'';
locations."/" = {
extraConfig = "include ${autheliaRequest};";
};
} virtualHostConfig;
services.nginx.virtualHosts."test.fricloud.dk" = config.mine.shared.lib.authelia.mkProtectedWebsite {
locations."/".root = pkgs.writeTextDir "index.html" ''
ACCESS GRANTED!
'';
};
}

2
machines/gerd/services/authelia/default.nix
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@ -1,6 +1,6 @@
{
imports = [
./authelia.nix
# ./authelia-nginx.nix
./authelia-nginx.nix
];
}