Android Package

[phpsyscoder]

Hi there
it works great on Windows/Linux/iOS ...
Ist there support for Android? I couln't find any packages or build docs.

Thank you for help.
Greetings
Hans-Juergen Petrich

[friedrich]

Unfortunately I didn't have the time to try and run it on Android. But it should be possible. At least on a rooted device. Maybe some small changes in the tun device handling code are necessary.

This may be of useful: http://code.metager.de/source/xref/android/4.4/frameworks/base/services/jni/com_android_server_connectivity_Vpn.cpp#56

If you figure anything out let me know!

[phpsyscoder]

Thank you for your reply.
i was also thinking that the tun interface would be an issue... but yes... should be possible with some changes in the source.
when times permit i'll try it :-) ...

Thank you again... the icmp tunnel works really great on my machines... still wondering how fast ICMP could be :-)

[raidenii]

I'm working on it... I have ported the hans executable to Android 5.0 and it runs great (needs some very small changes but overall not many modifications). I'm currently working on the frontend.

Also, @friedrich , I tried to remove the server part from the code (consider it is very unlikely that people will run hans as a server on an Android device), and I had a problem where client verifies the magic. If I keep the following lines, the compiler will run into an error:

"src/client.cpp:168: error: undefined reference to 'Server::magic'
collect2: error: ld returned 1 exit status
Makefile:19: recipe for target 'hans' failed"

where the corresponding lines are:

"if (header.magic != Server::magic)
return false;"

If I remove those two lines, it complies and runs without problems (or at least it seems).

Again thanks for the great work!

[friedrich]

Why do you want to remove the server code? It does not significantly increase the size of the executable.

[raidenii]

True, it's not that much - 0.5 MB out of 3.5 MB of compiled executable. More like a proof of concept.

[liang-hiwin]

Hello to develop Android version of it? But I will not develop !

[liang-hiwin]

Author: hello! Can you make the ICMP development to support Android, I look forward to your APK package

[liang-hiwin]

@raidenii Hello. I Tip waring statically compiled by linux android-hans (https://github.com/raidenii/hans-android). Reads as follows: hans -c 104.xxx.xxx.xxx -p password -d tun0 <
./hans: opened tunnel device: tun0
./hans: could not set tun device mtu
./hans: detaching from terminal

Can you give me a binary file? Thank you.

[Terrency]

Hi friedrich,
I am trying to compile it to android so share library, but there is some problem in code.

1. Exception not support in ndk, i will remove all of them.
   2.some point usage is not strict, like 66 line in client.cpp, there is no initial before usage after point convert, this is not support in android. and i am not familiar with c++, so could you do some help for me?

[friedrich]

@Terrency I am not sure what you mean. Line 66 of client.cpp is empty.

[friedrich]

@Terrency Exceptions are supported since NDKr5 https://developer.android.com/ndk/guides/cpp-support.html

[tufkal]

Necro bump!

Hey guys, nobody special here just a user. Been messing with TAP drivers on Windows and finally got the Windows binary to work well enough. Also, if your target machine running the daemon is virtual, just kill yourself now and don't do what I did and apply kernel patches to the hypervisor to make it work~

ANYWAYS, I am really interested if raiden or friedrich got an Android version to work. Here is the reason: I have been doing some testing when connected to cellular hotspots, and it seems (at least in the US, and on the carriers I tried) that ICMP traffic doesn't register as "data use" on their data plans. Of course this means as long as I run the daemon at home on my cable modem, I can hans tunnel from my phone to home and have unlimited (albeit not fantastic) data on my phone.

I understand to do this on Android the phone will need to be rooted to use the ICMP stack. I don't have enough familiarity with compiling source for a platform other than that one i'm on to try a compile for ARM on my x86 devbox.

Looking forward to seeing if this can be worked out!

[tkon99]

Hi all, I'm not familiar with networking at all yet but I've been looking into covert channels and I noticed that Iodine (IP over DNS) has an Android app (Andiodine) that doesn't require root access. A solution like that would be perfect for Hans too as the two would be a great complement to each other when traveling.
It uses the VpnService API available in Android (14+ I believe) to get around the root requirement, but I suppose that would mean a complete rewrite of the Hans client? If somebody could work with me to make this happen that'd be great ;)

[friedrich]

Unfortunately Hans needs root privileges to send and receive ICMP packets. It needs the CAP_NET_RAW privilege to be precise.

[rohitsingh133]

Please make it compatible with android pls...! @friedrich and @tkon99