etherpad-lite/src/node/hooks/express/padreadonly.js

var async = require('async');
var ERR = require("async-stacktrace");
var readOnlyManager = require("../../db/ReadOnlyManager");
var hasPadAccess = require("../../padaccess");
var exporthtml = require("../../utils/ExportHtml");

exports.expressCreateServer = function (hook_name, args, cb) {
  // serve read only pad
  args.app.get('/ro/:id', function(req, res) {
    var html;
    var padId;

    async.series([
      // translate the read only pad to a padId
      function(callback) {
        readOnlyManager.getPadId(req.params.id, function(err, _padId) {
          if(ERR(err, callback)) return;

          padId = _padId;

          // we need that to tell hasPadAcess about the pad
          req.params.pad = padId;

          callback();
        });
      },
      // render the html document
      function(callback) {
        // return if the there is no padId
        if(padId == null) {
          callback("notfound");
          return;
        }

        hasPadAccess(req, res, function() {
          // render the html document
          exporthtml.getPadHTMLDocument(padId, null, function(err, _html) {
            if(ERR(err, callback)) return;
            html = _html;
            callback();
          });
        });
      }
    ],
    function(err) {
      // throw any unexpected error
      if(err && err != "notfound")
        ERR(err);

      if(err == "notfound")
        res.status(404).send('404 - Not Found');
      else
        res.send(html);
    });
  });

}