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send a strong etag for the output.pdf file, needed for byte ranges in pdf.js

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Brian Gough 2014-12-02 14:30:13 +00:00
parent c119d2ba79
commit 95373d2b7e
1 changed files with 7 additions and 0 deletions
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7
services/clsi/app.coffee
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@ -38,10 +38,17 @@ app.get "/project/:project_id/sync/pdf", CompileController.syncFromPdf
staticServer = express.static Settings.path.compilesDir, setHeaders: (res, path, stat) ->
if Path.basename(path) == "output.pdf"
res.set("Content-Type", "application/pdf")
# Calculate an etag in the same way as nginx
# https://github.com/tj/send/issues/65
etag = (path, stat) ->
'"' + Math.ceil(+stat.mtime / 1000).toString(16) +
'-' + Number(stat.size).toString(16) + '"'
res.set("Etag", etag(path, stat))
else
# Force plain treatment of other file types to prevent hosting of HTTP/JS files
# that could be used in same-origin/XSS attacks.
res.set("Content-Type", "text/plain")
app.get "/project/:project_id/output/*", (req, res, next) ->
req.url = "/#{req.params.project_id}/#{req.params[0]}"
staticServer(req, res, next)