{ config, pkgs, ... }: let cryptpadConfig = '' # CryptPad serves static assets over these two domains. # `main_domain` is what users will enter in their address bar. # Privileged computation such as key management is handled in this scope # UI content is loaded via the `sandbox_domain`. # "Content Security Policy" headers prevent content loaded via the sandbox # from accessing privileged information. # These variables must be different to take advantage of CryptPad's sandboxing techniques. # In the event of an XSS vulnerability in CryptPad's front-end code # this will limit the amount of information accessible to attackers. set $main_domain "cryptpad.codewreck.org"; set $sandbox_domain "cryptpad-sandbox.codewreck.org"; # CryptPad's dynamic content (websocket traffic and encrypted blobs) # can be served over separate domains. Using dedicated domains (or subdomains) # for these purposes allows you to move them to a separate machine at a later date # if you find that a single machine cannot handle all of your users. # If you don't use dedicated domains, this can be the same as $main_domain # If you do, they'll be added as exceptions to any rules which block connections to remote domains. set $api_domain "cryptpad.codewreck.org"; set $files_domain "cryptpad.codewreck.org"; add_header X-XSS-Protection "1; mode=block"; add_header X-Content-Type-Options nosniff; add_header Access-Control-Allow-Origin "*"; # add_header X-Frame-Options "SAMEORIGIN"; # Insert the path to your CryptPad repository root here root ${pkgs.cryptpad}/lib/node_modules/cryptpad; index index.html; error_page 404 /customize.dist/404.html; # any static assets loaded with "ver=" in their URL will be cached for a year if ($args ~ ver=) { set $cacheControl max-age=31536000; } # Will not set any header if it is emptystring add_header Cache-Control $cacheControl; # CSS can be dynamically set inline, loaded from the same domain, or from $main_domain set $styleSrc "'unsafe-inline' 'self' ''${main_domain}"; # connect-src restricts URLs which can be loaded using script interfaces set $connectSrc "'self' https://''${main_domain} ''${main_domain} https://''${api_domain} blob: wss://''${api_domain} ''${api_domain} ''${files_domain}"; # fonts can be loaded from data-URLs or the main domain set $fontSrc "'self' data: ''${main_domain}"; # images can be loaded from anywhere, though we'd like to deprecate this as it allows the use of images for tracking set $imgSrc "'self' data: * blob: ''${main_domain}"; # frame-src specifies valid sources for nested browsing contexts. # this prevents loading any iframes from anywhere other than the sandbox domain set $frameSrc "'self' ''${sandbox_domain} blob:"; # specifies valid sources for loading media using video or audio set $mediaSrc "'self' data: * blob: ''${main_domain}"; # defines valid sources for webworkers and nested browser contexts # deprecated in favour of worker-src and frame-src set $childSrc "https://''${main_domain}"; # specifies valid sources for Worker, SharedWorker, or ServiceWorker scripts. # supercedes child-src but is unfortunately not yet universally supported. set $workerSrc "https://''${main_domain}"; # script-src specifies valid sources for javascript, including inline handlers set $scriptSrc "'self' resource: ''${main_domain}"; set $unsafe 0; # the following assets are loaded via the sandbox domain # they unfortunately still require exceptions to the sandboxing to work correctly. if ($uri = "/pad/inner.html") { set $unsafe 1; } if ($uri = "/sheet/inner.html") { set $unsafe 1; } if ($uri ~ ^\/common\/onlyoffice\/.*\/index\.html.*$) { set $unsafe 1; } # everything except the sandbox domain is a privileged scope, as they might be used to handle keys if ($host != $sandbox_domain) { set $unsafe 0; } # privileged contexts allow a few more rights than unprivileged contexts, though limits are still applied if ($unsafe) { set $scriptSrc "'self' 'unsafe-eval' 'unsafe-inline' resource: ''${main_domain}"; } # Finally, set all the rules you composed above. add_header Content-Security-Policy "default-src 'none'; child-src $childSrc; worker-src $workerSrc; media-src $mediaSrc; style-src $styleSrc; script-src $scriptSrc; connect-src $connectSrc; font-src $fontSrc; img-src $imgSrc; frame-src $frameSrc;"; # The nodejs process can handle all traffic whether accessed over websocket or as static assets # We prefer to serve static content from nginx directly and to leave the API server to handle # the dynamic content that only it can manage. This is primarily an optimization location ^~ /cryptpad_websocket { proxy_pass http://[::1]:3000; proxy_set_header X-Real-IP $remote_addr; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; # WebSocket support (nginx 1.4) proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection upgrade; } location ^~ /customize.dist/ { # This is needed in order to prevent infinite recursion between /customize/ and the root } # try to load customizeable content via /customize/ and fall back to the default content # located at /customize.dist/ # This is what allows you to override behaviour. location ^~ /customize/ { rewrite ^/customize/(.*)$ $1 break; try_files /customize/$uri /customize.dist/$uri; } # /api/config is loaded once per page load and is used to retrieve # the caching variable which is applied to every other resource # which is loaded during that session. location = /api/config { proxy_pass http://[::1]:3000; proxy_set_header X-Real-IP $remote_addr; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } # encrypted blobs are immutable and are thus cached for a year location ^~ /blob/ { root /www/cryptpad; add_header X-XSS-Protection "1; mode=block"; add_header X-Content-Type-Options nosniff; add_header Content-Security-Policy "default-src 'none'; child-src $childSrc; worker-src $workerSrc; media-src $mediaSrc; style-src $styleSrc; script-src $scriptSrc; connect-src $connectSrc; font-src $fontSrc; img-src $imgSrc; frame-src $frameSrc;"; if ($request_method = 'OPTIONS') { add_header Cache-Control $cacheControl; add_header X-XSS-Protection "1; mode=block"; add_header X-Content-Type-Options nosniff; add_header Content-Security-Policy "default-src 'none'; child-src $childSrc; worker-src $workerSrc; media-src $mediaSrc; style-src $styleSrc; script-src $scriptSrc; connect-src $connectSrc; font-src $fontSrc; img-src $imgSrc; frame-src $frameSrc;"; add_header 'Access-Control-Allow-Origin' '*'; add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS'; add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range'; add_header 'Access-Control-Max-Age' 1728000; add_header 'Content-Type' 'application/octet-stream; charset=utf-8'; add_header 'Content-Length' 0; return 204; } add_header Cache-Control max-age=31536000; add_header 'Access-Control-Allow-Origin' '*'; add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS'; add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range'; add_header 'Access-Control-Expose-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range'; try_files $uri =404; } # the "block-store" serves encrypted payloads containing users' drive keys # these payloads are unlocked via login credentials. They are mutable # and are thus never cached. They're small enough that it doesn't matter, in any case. location ^~ /block/ { root /www/cryptpad; add_header X-XSS-Protection "1; mode=block"; add_header X-Content-Type-Options nosniff; add_header Access-Control-Allow-Origin "*"; add_header Content-Security-Policy "default-src 'none'; child-src $childSrc; worker-src $workerSrc; media-src $mediaSrc; style-src $styleSrc; script-src $scriptSrc; connect-src $connectSrc; font-src $fontSrc; img-src $imgSrc; frame-src $frameSrc;"; add_header Cache-Control max-age=0; try_files $uri =404; } # This block provides an alternative means of loading content # otherwise only served via websocket. This is solely for debugging purposes, # and is thus not allowed by default. #location ^~ /datastore/ { # nixos: possibly also blobstage, data, pins, tasks #root /www/cryptpad; #add_header Cache-Control max-age=0; #try_files $uri =404; #} # ugly hack: disable registration location /register { deny all; } # The nodejs server has some built-in forwarding rules to prevent # URLs like /pad from resulting in a 404. This simply adds a trailing slash # to a variety of applications. location ~ ^/(register|login|settings|user|pad|drive|poll|slide|code|whiteboard|file|media|profile|contacts|todo|filepicker|debug|kanban|sheet|support|admin|notifications|teams)$ { rewrite ^(.*)$ $1/ redirect; } # Finally, serve anything the above exceptions don't govern. try_files /www/$uri /www/$uri/index.html /customize/$uri; ''; in { imports = [ ../../profiles/nginx.nix ]; systemd.services.nginx = { serviceConfig.BindReadOnlyPaths = [ "/home/asmadeus/www:/www/local" "/var/lib/private/cryptpad:/www/cryptpad" ]; }; services.nginx.virtualHosts = { "jormungand.codewreck.org" = { forceSSL = true; enableACME = true; locations."/mpd/" = { proxyPass = "http://127.0.0.1:8080/"; # /var/spool/nginx/mpd.htpasswd has been populated manually # until proper secrets get managed... extraConfig = '' auth_basic "mpd"; auth_basic_user_file /var/spool/nginx/mpd.htpasswd; ''; }; locations."/local/" = { root = "/www"; }; locations."/" = { extraConfig = '' rewrite ^ https://codewreck.org$request_uri? redirect; ''; }; }; "miniflux.codewreck.org" = { forceSSL = true; enableACME = true; locations."/" = { proxyPass = "http://[::1]:8081/"; }; }; "matrix.codewreck.org" = { forceSSL = true; enableACME = true; locations."/".extraConfig = '' return 404; ''; locations."/_matrix" = { proxyPass = "http://[::1]:8008"; }; }; "riot.codewreck.org" = { forceSSL = true; enableACME = true; root = pkgs.element-web.override { conf = { default_server_config."m.homeserver" = { "base_url" = "https://matrix.codewreck.org"; "server_name" = "codewreck.org"; }; }; }; }; "cryptpad.codewreck.org" = { forceSSL = true; enableACME = true; extraConfig = cryptpadConfig; }; "cryptpad-sandbox.codewreck.org" = { forceSSL = true; enableACME = true; extraConfig = cryptpadConfig; }; }; }