Pages that do not use the AppFramework have its CSP inherited from `\OC_Response::addSecurityHeaders`. While those are not many anymore, there are some examples such as the "Help" page.
To stay completely backwards-compatible we should also add the nonce to the legacy CSP response.
To test that open your browser console and open the help page. Without this you will get a JS error. With this you won't.
Signed-off-by: Lukas Reschke <lukas@statuscode.ch>
The check for two factor enforcement would return true for non-existing
users. This fix makes it return false in order to be able to perform
the regular login which will then fail and return false.
This prevents throwing PasswordLoginForbidden for non-existing users.
If we move a file from the temp part file to the original file we don't
need update permissions.
Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
CSP nonces are a feature available with CSP v2. Basically instead of saying "JS resources from the same domain are ok to be served" we now say "Ressources from everywhere are allowed as long as they add a `nonce` attribute to the script tag with the right nonce.
At the moment the nonce is basically just a `<?php p(base64_encode($_['requesttoken'])) ?>`, we have to decode the requesttoken since `:` is not an allowed value in the nonce. So if somebody does on their own include JS files (instead of using the `addScript` public API, they now must also include that attribute.)
IE does currently not implement CSP v2, thus there is a whitelist included that delivers the new CSP v2 policy to newer browsers. Check http://caniuse.com/#feat=contentsecuritypolicy2 for the current browser support list. An alternative approach would be to just add `'unsafe-inline'` as well as `'unsafe-inline'` is ignored by CSPv2 when a nonce is set. But this would make this security feature unusable at all in IE. Not worth it at the moment IMO.
Implementing this offers the following advantages:
1. **Security:** As we host resources from the same domain by design we don't have to worry about 'self' anymore being in the whitelist
2. **Performance:** We can move oc.js again to inline JS. This makes the loading way quicker as we don't have to load on every load of a new web page a blocking dynamically non-cached JavaScript file.
If you want to toy with CSP see also https://csp-evaluator.withgoogle.com/
Signed-off-by: Lukas Reschke <lukas@statuscode.ch>
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Roeland Jago Douma
Morris Jobke
Jörn Friedrich Dreyer
Lukas Reschke
Roeland Jago Douma
Joas Schilling
Thomas Müller
Boris Rybalkin
Vincent Petry
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