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Merge branch 'master' of ssh://tripe.blitter.com/var/git/hkexsh

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Russ Magee 2018-08-31 11:47:27 -07:00
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README.md
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@ -3,9 +3,10 @@ HKExSh
'hkexsh' (HerraduraKEx shell) is a golang implementation of a simple 'hkexsh' (HerraduraKEx shell) is a golang implementation of a simple
remote shell client and server, similar in role to ssh, offering remote shell client and server, similar in role to ssh, offering
encrypted interactive and non-interactive sessions. The client and server encrypted interactive and non-interactive sessions as well as file copying.
programs (hkexsh and hkexshd) use a mostly drop-in replacement for golang's
standard golang/pkg/net facilities (net.Dial(), net.Listen(), net.Accept() The client and server programs (hkexsh and hkexshd) use a mostly drop-in
replacement for golang's standard golang/pkg/net facilities (net.Dial(), net.Listen(), net.Accept()
and the net.Conn type), which automatically negotiate keying material for and the net.Conn type), which automatically negotiate keying material for
'secure' sockets using the experimental HerraduraKEx key exchange algorithm 'secure' sockets using the experimental HerraduraKEx key exchange algorithm
first released at first released at
@ -69,12 +70,36 @@ To set accounts & passwords:
* $ sudo hkexpasswd/hkexpasswd -u joebloggs * $ sudo hkexpasswd/hkexpasswd -u joebloggs
* $ <enter a password, enter again to confirm> * $ <enter a password, enter again to confirm>
Running Clent and Server. In separate shells: Running Clent and Server
-- --
* [A]$ sudo hkexshd/hkexshd & # add -d for debugging In separate shells A and B:
* [B]$ hkexsh/hkexsh -u joebloggs # add -d for debugging * [A]$ cd hkexshd && sudo ./hkexshd & # add -d for debugging
Interactive shell
* [B]$ cd hkexsh && ./hkexsh joebloggs@host-or-ip # add -d for debugging
One-shot command
* [B]$ cd hkexsh && ./hkexsh -x "ls /tmp" joebloggs@host-or-ip
NOTE if running client (hkexsh) with -d, one will likely need to run 'reset' afterwards NOTE if running client (hkexsh) with -d, one will likely need to run 'reset' afterwards
to fix up the shell tty afterwards as stty echo may not be restored if client crashes to fix up the shell tty afterwards as stty echo may not be restored if client crashes
or is interrupted. or is interrupted.
File Copying using hkexcp
--
hkexcp is a symlink to hkexsh, and the binary checks its own filename to determine whether it is being invoked in 'shell' or 'copy' mode. Refer to the '-h' output for differences in accepted options.
General remote syntax is: user@server:[/]src-or-dest-path
If no leading / is specified in src-or-dest-path, it is assumed to be relative to $HOME of the remote user.
File operations are all performed as the remote user, so account permissions apply as expected.
Local (client) to remote (server) copy:
* cd hkexsh && ./hkexcp fileA /some/where/fileB /some/where/else/dirC joebloggs@host-or-ip:/remoteDir
Remote (server) to local (client) copy:
* cd hekxsh && ./hkexcp joebloggs@host-or-ip:/remoteDirOrFile /some/where/local/Dir
NOTE: Renaming while copying is NOT supported (ie., like cp's 'cp /foo/bar/fileA ./fileB). Put another way, the destination (whether local or remote) is ALWAYS a dir.
hkexcp uses tar with gzip compression (ala a 'tarpipe') under the hood, sending tar data over the hkex encrypted channel. Use the -d flag on client or server to see the generated tar commandlines if you're curious.