Scanning a Tempfile which exists in memory about clamby HOT 2 CLOSED

It appears that clamscan supports taking data from standard input, so with Open3 this should work:

require "open3"

stdout, stderr, status = Open3.popen3("clamscan -") do |stdin, stdout, stderr, thread|
  IO.copy_stream(file, stdin)
  stdin.close

  [stdout.read, stderr.read, thread.value]
end

from clamby.

After a bit of digging around into clamscan, it appears that there is no way to force it to solely read a file from memory. If passing input from STDIN, clamscan will write the input to a temporary file then scan that. The use-case for this request was to avoid files touching disk so it may be a little redundant.

from clamby.