On Wednesday, 26 September 2012 03:43:15 UTC-4, Soundarapandian Rathinasamy wrote: > > Hi folks, > I am building secure web application using Ruby on Rails which scans > virus in uploaded file. > Now Currently I can access the tempfile from the > ActionDispatch::Http::UploadedFile instance which Rails creates for > uploaded file and complete scan successfully. > But I want to avoid Rails creating the tempfile as I fear once the virus > affected file stored in tempfile this may infect the system. > > What my question is: > > * Is there any way to tell Rails that 'Generate the IO stream > instance(string) instead of Tempfile' ?* > > If Rails gives file as IO stream I can use this stream to scan for Virus. >
I don't think this is a sensible tradeoff - there are plenty of better ways to make sure that temporary files aren't executable. For instance, putting the directory on they're in on a partition mounted with noexec (or just NOT EXECUTING them). On the other hand, streaming them into memory makes it trivial to completely DDOS your server, by simply sending a file larger than the available RAM. --Matt Jones -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/n_uUkbUZbWEJ. For more options, visit https://groups.google.com/groups/opt_out.
