TRAMP should know how to work with Android 2.2 (via DroidSSHd; without env)

[Ivan Zakharyaschev]

I have installed and started DroidSSHd (http://code.google.com/p/droidsshd/downloads/detail?name=DroidSSHdv06.apk , http://code.google.com/p/droidsshd/ , http://f-droid.org/forums/topic/droidsshd/, http://lekv.de/2012/03/05/ssh-server-for-android/ ) on my Samsung Galaxy S.

(There are simply no other packaged free (= libre) sshd frontends that could be installed and run without root access on my Samsung Galaxy S with Android 2.2 without rooting it.)

DroidSSHd package includes no scp or sftp programs. (But I could transfer some files through ssh 'cat - > filename'.) It lsitens on port 2222.

I wanted to connect to the Samsung Galaxy S with TRAMP in Emacs, C-x C-f /ssh:192.168.1.100#2222:/ , and it doesn't work:

buffer *tramp/ssh 192.168.1.100*:

exec: env: not found
Connection to 192.168.1.100 closed.

Process *tramp/ssh 192.168.1.100* exited abnormally with code 127

from *Messages*:

Loading tramp...done
Tramp: Opening connection for 192.168.1.100#2222 using ssh...
Tramp: Sending command `exec ssh -p 2222 -e none 192.168.1.100'

Tramp: Waiting for prompts from remote shell
Tramp: Sending command `exec ssh -p 2222 -e none 192.168.1.100'
Tramp: Found remote shell prompt on `192.168.1.100'
Tramp: Opening connection for 192.168.1.100#2222 using ssh...done
Tramp: Opening connection for 192.168.1.100#2222 using ssh...
Tramp: Sending command `exec ssh -p 2222 -e none 192.168.1.100'

Tramp: Waiting for prompts from remote shell
Tramp: Sending command `exec ssh -p 2222 -e none 192.168.1.100'
Tramp: Found remote shell prompt on `192.168.1.100'
Tramp: Opening connection for 192.168.1.100#2222 using ssh...done
byte-code: Process has died

Perhaps, we can teach TRAMP how to work with Android 2.2. Perhaps, it shouldn't count on the availability of "env"?

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: emacs 23.3+1-1ubuntu9
Uname: Linux 3.0.27-1-ac100 armv7l
ApportVersion: 2.0.1-0ubuntu11
Architecture: armhf
Date: Sat Aug 25 16:53:23 2012
PackageArchitecture: all
SourcePackage: emacs23
UpgradeStatus: No upgrade log present (probably fresh install)

[Ivan Zakharyaschev (imz)]

Perhaps, we could use the experiance of https://github.com/juergenhoetzel/tramp-adb -- a method for connecting to Android as well, but through adb and USB. But the restrictions of the available tools on the Android side are probably similar in both cases.

[Ivan Zakharyaschev (imz)]

The report submitted upstream: http://lists.gnu.org/archive/html/tramp-devel/2012-08/msg00011.html .

[Ivan Zakharyaschev (imz)]

I've learned about FISH -- http://unix.stackexchange.com/a/8735/4319 , http://en.wikipedia.org/wiki/Files_transferred_over_shell_protocol .

It's also a scheme ("protocol") that tries to use only basic Unix utilities for remote access (unlike scp or SFTP). And there was/is even tramp-fish.el (if it hasn't been thrown away -- http://lists.gnu.org/archive/html/emacs-diffs/2009-06/msg00226.html ).

It might work with Android (or not).

[era (era)]

I believe it was removed. http://cvs.savannah.gnu.org/viewvc/tramp/ChangeLog?root=tramp&r1=1.194&r2=1.195