180 lines
8.0 KiB
Django/Jinja
180 lines
8.0 KiB
Django/Jinja
{% extends "core.j2" %}
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{% block app_specific %}
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# CryptPad serves static assets over these two domains.
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# `main_domain` is what users will enter in their address bar.
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# Privileged computation such as key management is handled in this scope
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# UI content is loaded via the `sandbox_domain`.
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# "Content Security Policy" headers prevent content loaded via the sandbox
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# from accessing privileged information.
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# These variables must be different to take advantage of CryptPad's sandboxing techniques.
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# In the event of an XSS vulnerability in CryptPad's front-end code
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# this will limit the amount of information accessible to attackers.
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set $main_domain "{{ item.ssl_name }}";
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set $sandbox_domain "sandbox.{{ item.ssl_name }}";
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# CryptPad's dynamic content (websocket traffic and encrypted blobs)
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# can be served over separate domains. Using dedicated domains (or subdomains)
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# for these purposes allows you to move them to a separate machine at a later date
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# if you find that a single machine cannot handle all of your users.
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# If you don't use dedicated domains, this can be the same as $main_domain
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# If you do, they'll be added as exceptions to any rules which block connections to remote domains.
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set $api_domain "{{ item.ssl_name }}";
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set $files_domain "{{ item.ssl_name }}";
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add_header Access-Control-Allow-Origin "*";
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set $coop '';
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if ($uri ~ ^\/sheet\/.*$) { set $coop 'same-origin'; }
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# Enable SharedArrayBuffer in Firefox (for .xlsx export)
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add_header Cross-Origin-Resource-Policy cross-origin;
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add_header Cross-Origin-Opener-Policy $coop;
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add_header Cross-Origin-Embedder-Policy require-corp;
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# any static assets loaded with "ver=" in their URL will be cached for a year
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if ($args ~ ver=) {
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set $cacheControl max-age=31536000;
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}
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if ($uri ~ ^/.*(\/|\.html)$) {
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set $cacheControl no-cache;
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}
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# Will not set any header if it is emptystring
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add_header Cache-Control $cacheControl;
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# CSS can be dynamically set inline, loaded from the same domain, or from $main_domain
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set $styleSrc "'unsafe-inline' 'self' ${main_domain}";
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# connect-src restricts URLs which can be loaded using script interfaces
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set $connectSrc "'self' https://${main_domain} ${main_domain} https://${api_domain} blob: wss://${api_domain} ${api_domain} ${files_domain}";
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# fonts can be loaded from data-URLs or the main domain
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set $fontSrc "'self' data: ${main_domain}";
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# images can be loaded from anywhere, though we'd like to deprecate this as it allows the use of images for tracking
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set $imgSrc "'self' data: * blob: ${main_domain}";
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# frame-src specifies valid sources for nested browsing contexts.
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# this prevents loading any iframes from anywhere other than the sandbox domain
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set $frameSrc "'self' ${sandbox_domain} blob:";
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# specifies valid sources for loading media using video or audio
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set $mediaSrc "'self' data: * blob: ${main_domain}";
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# defines valid sources for webworkers and nested browser contexts
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# deprecated in favour of worker-src and frame-src
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set $childSrc "https://${main_domain}";
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# specifies valid sources for Worker, SharedWorker, or ServiceWorker scripts.
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# supercedes child-src but is unfortunately not yet universally supported.
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set $workerSrc "https://${main_domain}";
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# script-src specifies valid sources for javascript, including inline handlers
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set $scriptSrc "'self' resource: ${main_domain}";
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set $unsafe 0;
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# the following assets are loaded via the sandbox domain
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# they unfortunately still require exceptions to the sandboxing to work correctly.
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if ($uri = "/sheet/inner.html") { set $unsafe 1; }
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if ($uri ~ ^\/common\/onlyoffice\/.*\/index\.html.*$) { set $unsafe 1; }
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# everything except the sandbox domain is a privileged scope, as they might be used to handle keys
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if ($host != $sandbox_domain) { set $unsafe 0; }
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# privileged contexts allow a few more rights than unprivileged contexts, though limits are still applied
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if ($unsafe) {
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set $scriptSrc "'self' 'unsafe-eval' 'unsafe-inline' resource: ${main_domain}";
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}
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# Finally, set all the rules you composed above.
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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 $frameSrc;";
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{% endblock %}
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{% block root %}
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root {{ nginx_www_dir }}{{ item.root }};
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index index.html;
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error_page 404 /customize.dist/404.html;
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# Finally, serve anything the above exceptions don't govern.
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try_files /www/$uri /www/$uri/index.html /customize/$uri;
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{% endblock %}
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{% block location%}
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location ^~ /cryptpad_websocket {
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proxy_pass http://{{ item.proxy_pass }}:3000;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header Host $host;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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# WebSocket support (nginx 1.4)
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proxy_http_version 1.1;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection upgrade;
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}
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location ^~ /customize.dist/ {
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# This is needed in order to prevent infinite recursion between /customize/ and the root
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}
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# try to load customizeable content via /customize/ and fall back to the default content
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# located at /customize.dist/
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# This is what allows you to override behaviour.
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location ^~ /customize/ {
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rewrite ^/customize/(.*)$ $1 break;
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try_files /customize/$uri /customize.dist/$uri;
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}
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# /api/config is loaded once per page load and is used to retrieve
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# the caching variable which is applied to every other resource
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# which is loaded during that session.
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location = /api/config {
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proxy_pass http://{{ item.proxy_pass }}:3000;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header Host $host;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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}
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# encrypted blobs are immutable and are thus cached for a year
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location ^~ /blob/ {
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if ($request_method = 'OPTIONS') {
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add_header 'Access-Control-Allow-Origin' '*';
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add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
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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';
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add_header 'Access-Control-Max-Age' 1728000;
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add_header 'Content-Type' 'application/octet-stream; charset=utf-8';
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add_header 'Content-Length' 0;
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return 204;
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}
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add_header Cache-Control max-age=31536000;
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add_header 'Access-Control-Allow-Origin' '*';
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add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
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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,Content-Length';
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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,Content-Length';
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try_files $uri =404;
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}
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# the "block-store" serves encrypted payloads containing users' drive keys
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# these payloads are unlocked via login credentials. They are mutable
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# and are thus never cached. They're small enough that it doesn't matter, in any case.
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location ^~ /block/ {
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add_header Cache-Control max-age=0;
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try_files $uri =404;
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}
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# This block provides an alternative means of loading content
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# otherwise only served via websocket. This is solely for debugging purposes,
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# and is thus not allowed by default.
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location ^~ /datastore/ {
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add_header Cache-Control max-age=0;
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try_files $uri =404;
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}
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# The nodejs server has some built-in forwarding rules to prevent
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# URLs like /pad from resulting in a 404. This simply adds a trailing slash
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# to a variety of applications.
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location ~ ^/(register|login|settings|user|pad|drive|poll|slide|code|whiteboard|file|media|profile|contacts|todo|filepicker|debug|kanban|sheet|support|admin|notifications|teams)$ {
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rewrite ^(.*)$ $1/ redirect;
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}
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{% endblock %}
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