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Keep-web flow » History » Revision 2

Revision 1 (Peter Amstutz, 12/17/2015 08:13 PM) → Revision 2/4 (Peter Amstutz, 12/17/2015 09:22 PM)

h1. Keep-web flow 

 Keep-web serves files from Keep collections as normal HTTP documents. 

 Considerations: 

 We are serving arbitrary files, which can include HTML files with Javascript.    We don't want serve these files as regular documents from Workbench, because this would expose a cross-site-scripting (XSS) attack where the HTML page is loaded and executed with the credentials of the viewing user. 

 This is mitigated two ways: 

 # By serving files with "content-disposition: attachment" which tells the browser to open up the download dialog straight away and don't try to show the files. 
 # Using separate a separate domain for downloading, so the browser won't send workbench cookies. 

 This raises the challenge: how to provide the API token to keep-web to enable download? 

 When user clicks on a workbench download link, they are redirected link...