[tor-dev] iObfs: obfs4proxy on iOS

[Mike Tigas]

David Fifield:
>> > There are trivial forks of obfs4[1] and goptlib[2] that simply hard-code
>> > some options that are normally sent as environment variables because
>> > obfs4proxy runs in managed mode[3].
> […]
> This is radical. Maybe you don't need the fork of goptlib if you do
> os.Setenv on the relevant variables before calling pt.ClientSetup in
> obfs4?

Awesome. Thanks for the tip: nuked the goptlib fork *and* cleaned up the
obfs4 fork a bunch:
https://github.com/mtigas/obfs4/compare/1df5c8ffe8f4aa2614323698e8008f1ab1fb7a18...mtigas:iObfs-201604-dev

As for the rest of iObfs, the build is a little more streamlined now,
using a fork of gomobile (since mainline doesn't build for i386 by
default) and the now-smaller obfs fork:
https://github.com/mtigas/iObfs/blob/master/build.sh

And things are in fairly clean shape now. There's an example in my repo
now[1] showing minimally what it takes to link and implement Tor into a
webview app[2] and then how to link & implement obfs4proxy into it[3].

[1]: https://github.com/mtigas/iObfs/tree/master/example
[2]:
https://github.com/mtigas/iObfs/commit/838fe6d926d643809cc8ea7e8a9b34a14c247ba3
[3]:
https://github.com/mtigas/iObfs/commit/00fac92d620a6401de7b699720f3caa79b7a34c6


-- 
Mike Tigas
News Applications Developer, ProPublica
https://www.propublica.org/
@mtigas | https://mike.tig.as/ | 0xA993E7156E0E9923

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