[tor-bugs] #13338 [Tor]: Rewrite tor-fw-helper in Go (or another memory-safe language) (was: go versions of the upnp / pmp libraries?)

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#13338: Rewrite tor-fw-helper in Go (or another memory-safe language)
-----------------------------+---------------------------------
     Reporter:  arma         |      Owner:
         Type:  enhancement  |     Status:  new
     Priority:  minor        |  Milestone:  Tor: very long term
    Component:  Tor          |    Version:
   Resolution:               |   Keywords:  flashproxy
Actual Points:               |  Parent ID:  #5213
       Points:               |
-----------------------------+---------------------------------
Changes (by dcf):

 * keywords:   => flashproxy
 * parent:   => #5213


Comment:

 I'm changing the title to what I would want someone looking for a medium-
 sized task to understand.

 There appear to be a bunch of third-party UPnP implementations (I searched
 http://godoc.org/?q=upnp). The ones that look promising are
  * https://github.com/prestonTao/upnp (e.g.
 [http://godoc.org/github.com/prestonTao/upnp#Upnp.AddPortMapping
 AddPortMapping])
  * https://github.com/nhelke/goupnpc (e.g.
 [http://godoc.org/github.com/nhelke/goupnpc/goupnp#IGD.AddLocalPortRedirection
 AddLocalPortRedirection])
  * https://github.com/huin/goupnp (e.g.
 [http://godoc.org/github.com/huin/goupnp/dcps/internetgateway1#WANIPConnection1.AddPortMapping
 AddPortMapping])

 For NAT-PMP, I found only (http://godoc.org/?q=nat-pmp)
  * https://github.com/jackpal/go-nat-pmp (e.g.
 [http://godoc.org/github.com/jackpal/go-nat-pmp#Client.AddPortMapping
 AddPortMapping])

 If any of these third-party libraries happen to work, then rewriting tor-
 fw-helper itself is an easy job. We could do #5213 and make flash proxy
 immediately more useful (flashproxy-client already knows how to use tor-
 fw-helper thanks to #9033).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13338#comment:1>
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