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path: root/modules/private/websites/tools/ether/default.nix
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{ lib, pkgs, config,  ... }:
let
  env = config.myEnv.tools.etherpad-lite;
  cfg = config.myServices.websites.tools.etherpad-lite;
  # Make sure we’re not rebuilding whole libreoffice just because of a
  # dependency
  libreoffice = (import <nixpkgs> { overlays = []; }).libreoffice-fresh;
  ecfg = config.services.etherpad-lite;
in {
  options.myServices.websites.tools.etherpad-lite = {
    enable = lib.mkEnableOption "enable etherpad's website";
  };

  config = lib.mkIf cfg.enable {
    services.duplyBackup.profiles.etherpad-lite = {
      rootDir = "/var/lib/private/etherpad-lite";
    };
    secrets.keys = [
      {
        dest = "webapps/tools-etherpad-apikey";
        permissions = "0400";
        text = env.api_key;
      }
      {
        dest = "webapps/tools-etherpad-sessionkey";
        permissions = "0400";
        text = env.session_key;
      }
      {
        dest = "webapps/tools-etherpad";
        permissions = "0400";
        text = ''
          {
            "title": "Etherpad",
            "favicon": "favicon.ico",

            "ip": "",
            "port" : "${ecfg.sockets.node}",
            "showSettingsInAdminPage" : false,
            "dbType" : "postgres",
            "dbSettings" : {
              "user"    : "${env.postgresql.user}",
              "host"    : "${env.postgresql.socket}",
              "password": "${env.postgresql.password}",
              "database": "${env.postgresql.database}",
              "charset" : "utf8mb4"
            },

            "defaultPadText" : "Welcome to Etherpad!\n\nThis pad text is synchronized as you type, so that everyone viewing this page sees the same text. This allows you to collaborate seamlessly on documents!\n\nGet involved with Etherpad at http:\/\/etherpad.org\n",
            "padOptions": {
              "noColors": false,
              "showControls": true,
              "showChat": true,
              "showLineNumbers": true,
              "useMonospaceFont": false,
              "userName": false,
              "userColor": false,
              "rtl": false,
              "alwaysShowChat": false,
              "chatAndUsers": false,
              "lang": "en-gb"
            },

            "suppressErrorsInPadText" : false,
            "requireSession" : false,
            "editOnly" : false,
            "sessionNoPassword" : false,
            "minify" : true,
            "maxAge" : 21600,
            "abiword" : null,
            "soffice" : "${libreoffice}/bin/soffice",
            "tidyHtml" : "${pkgs.html-tidy}/bin/tidy",
            "allowUnknownFileEnds" : true,
            "requireAuthentication" : false,
            "requireAuthorization" : false,
            "trustProxy" : false,
            "disableIPlogging" : false,
            "automaticReconnectionTimeout" : 0,
            "scrollWhenFocusLineIsOutOfViewport": {
              "percentage": {
                "editionAboveViewport": 0,
                "editionBelowViewport": 0
              },
              "duration": 0,
              "scrollWhenCaretIsInTheLastLineOfViewport": false,
              "percentageToScrollWhenUserPressesArrowUp": 0
            },
            "users": {
              "ldapauth": {
                "url": "ldaps://${env.ldap.host}",
                "accountBase": "${env.ldap.base}",
                "accountPattern": "${env.ldap.filter}",
                "displayNameAttribute": "cn",
                "searchDN": "${env.ldap.dn}",
                "searchPWD": "${env.ldap.password}",
                "groupSearchBase": "${env.ldap.base}",
                "groupAttribute": "member",
                "groupAttributeIsDN": true,
                "searchScope": "sub",
                "groupSearch": "${env.ldap.group_filter}",
                "anonymousReadonly": false
              }
            },
            "socketTransportProtocols" : ["xhr-polling", "jsonp-polling", "htmlfile"],
            "loadTest": false,
            "indentationOnNewLine": false,
            "toolbar": {
              "left": [
                ["bold", "italic", "underline", "strikethrough"],
                ["orderedlist", "unorderedlist", "indent", "outdent"],
                ["undo", "redo"],
                ["clearauthorship"]
              ],
              "right": [
                ["importexport", "timeslider", "savedrevision"],
                ["settings", "embed"],
                ["showusers"]
              ],
              "timeslider": [
                ["timeslider_export", "timeslider_returnToPad"]
              ]
            },
            "loglevel": "INFO",
            "logconfig" : { "appenders": [ { "type": "console" } ] }
          }
        '';
      }
    ];
    services.etherpad-lite = {
      enable = true;
      modules = builtins.attrValues pkgs.webapps.etherpad-lite-modules;
      sessionKeyFile = "/var/secrets/webapps/tools-etherpad-sessionkey";
      apiKeyFile = "/var/secrets/webapps/tools-etherpad-apikey";
      configFile = "/var/secrets/webapps/tools-etherpad";
    };

    systemd.services.etherpad-lite.serviceConfig.SupplementaryGroups = "keys";

    services.filesWatcher.etherpad-lite = {
      restart = true;
      paths = [ ecfg.sessionKeyFile ecfg.apiKeyFile ecfg.configFile ];
    };

    services.websites.env.tools.modules = [
      "headers" "proxy" "proxy_http" "proxy_wstunnel"
    ];
    services.websites.env.tools.vhostConfs.etherpad-lite = {
      certName    = "eldiron";
      addToCerts  = true;
      hosts       = [ "ether.immae.eu" ];
      root        = null;
      extraConfig = [ ''
        Header always set Strict-Transport-Security "max-age=31536000; includeSubdomains;"
        RequestHeader set X-Forwarded-Proto "https"

        RewriteEngine On

        RewriteMap  redirects "txt:${pkgs.writeText "redirects.txt" config.myEnv.tools.etherpad-lite.redirects}"
        RewriteCond %{QUERY_STRING}         "!noredirect"
        RewriteCond %{REQUEST_URI}          "^(.*)$"
        RewriteCond ''${redirects:$1|Unknown} "!Unknown"
        RewriteRule "^(.*)$"                ''${redirects:$1}  [L,NE,R=301,QSD]

        RewriteCond %{REQUEST_URI}  ^/socket.io            [NC]
        RewriteCond %{QUERY_STRING} transport=websocket    [NC]
        RewriteRule /(.*)           unix://${ecfg.sockets.node}|ws://ether.immae.eu/$1 [P,NE,QSA,L]

        <IfModule mod_proxy.c>
          ProxyVia On
          ProxyRequests Off
          ProxyPreserveHost On
          ProxyPass         / unix://${ecfg.sockets.node}|http://ether.immae.eu/
          ProxyPassReverse  / unix://${ecfg.sockets.node}|http://ether.immae.eu/
          <Proxy *>
            Options FollowSymLinks MultiViews
            AllowOverride None
            Require all granted
          </Proxy>
        </IfModule>
      '' ];
    };
  };
}