Module: Arachni::Element::Capabilities::Auditable::Buffered

Included in:
Arachni::Element::Cookie, Form, Header, JSON, Link, LinkTemplate, NestedCookie, XML
Defined in:
lib/arachni/element/capabilities/auditable/buffered.rb

Overview

Author:

  • Tasos “Zapotek” Laskos <tasos.laskos@arachni-scanner.com>

Constant Summary collapse

DEFAULT_BUFFER_SIZE = 
15_000

Instance Method Summary collapse

Instance Method Details

#buffered_audit(payloads, options = {}, &block) ⇒ Object 



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# File 'lib/arachni/element/capabilities/auditable/buffered.rb', line 18

def buffered_audit( payloads, options = {}, &block )
    fail ArgumentError, 'Missing block.' if !block_given?

    options     = options.dup
    buffer_size = options[:buffer_size] || DEFAULT_BUFFER_SIZE

    print_debug_level_2 "About to audit at least #{buffer_size} bytes at a time: #{audit_id}"

    buffers = {}

    options[:submit] ||= {}
    options[:submit][:on_body] = proc do |chunk, response|
        # In case of redirection or runtime scope changes.
        if !response.parsed_url.seed_in_host? && response.scope.out?
            print_debug_level_3 "Response out of scope for #{audit_id}: #{response.url}"
            print_debug_level_3 'Aborting...'
            next :abort
        end

        print_debug_level_3 "Got data for: #{audit_id}"
        if debug?( 4 )
            print_debug_level_4 chunk
        end

        request = response.request

        buffers[request.id] ||= ''
        buffer = buffers[request.id]

        buffer << chunk

        print_debug_level_3 "Buffer is at: #{buffer.size}/#{buffer_size}"
        next if buffer.size < buffer_size

        print_debug_level_3 'Buffer full, setting response body.'
        print_debug_level_4 buffer
        response.body = buffer

        print_debug_level_3 "Calling: #{block}"
        r = block.call( response, request.performer, false )

        print_debug_level_3 "Block returned: #{r}"
        print_debug_level_3 'Emptying buffer.'

        # Create a new object, we don't want to mess with reference issues.
        buffers[request.id] = ''

        r
    end

    audit( payloads, options ) do |response|
        request = response.request
        buffer  = buffers[request.id]

        if !buffer.to_s.empty?
            print_debug_level_3 "There's more data in the buffer, setting response body."
            print_debug_level_3 buffer

            response.body = buffer
        else
            print_debug_level_3 "There's no buffer, leaving response body as is."
            print_debug_level_3 response.body
        end

        block.call response, request.performer, true

        buffers.delete( request.id )
    end
end