===============================================================================
NAME
amigassh
SSH2 for the Amiga, 68000+. Needs a server that supports the used crypto stuff.
It will work on an unaccelerated Amiga but building the connection takes
minutes!
Open a shell on the host using your console colors and mouse.
Or execute a command via SSH2.
USAGE: amigassh [options] [user ]host[:port] [command [args]]
-? display this help
-p <port> define a port
-T don't allocate a pseudo terminal
-v <n> set verbosity, 0 = OFF, 7 = TRACE
<command> command to run instead of shell
===============================================================================
SUPPORT ME
Support me via PayPal: https://t.ly/N8WkB
also small monthly donations do help :-)
===============================================================================
COPYRIGHT
ed/curve25519 code from Public Domain, Authors:
- Daniel J. Bernstein
- Niels Duif
- Tanja Lange
- lead: Peter Schwabe
- Bo-Yin Yang
* optimized, modified to use 16 bit integers
by Stefan "Bebbo" Franke
aes, gcm, sha256, sh512, amigassh itself:
- Stefan "Bebbo" Franke
Written in 2024 by Stefan "Bebbo" Franke <s.frankebebbosoft>
To the extent possible under law, the author(s) have dedicated all copyright
and related and neighboring rights to this software to the public domain
worldwide. This software is distributed without any warranty.
You should have received a copy of the CC0 Public Domain Dedication along with
this software.
If not, see <https://creativecommons.org/publicdomain/zero/1.0/>.
===============================================================================
DISCLAIMER OF WARRANTY
Software is provided "AS IS," without a warranty of any kind.
You may use it on your own risk.
===============================================================================
LIMITATION OF LIABILITY
I SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY YOU OR ANY THIRD PARTY
AS A RESULT OF USING OR DISTRIBUTING SOFTWARE. IN NO EVENT WILL I BE LIABLE
FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS
OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE
SOFTWARE, EVEN IF I HAVE ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
===============================================================================
HISTORY
amigassh V1.14
* use all 16 bits of a WORD
* enhanced C code with some asm statements
* creating a key pair is down to ~15s
* verifying the host is down to ~35s
amigassh V1.13
* compute the private key before establishing the connection
This increases the chance to establish a connection on slow Amigas
* some speed improvements measured with WinUAE cycle exact A500:
* creating a key pair is down to 43,2s!
* verifying the host is down to 2:14,6!
* removed CTRL+F
* removed using c stdio
* add -v switch
amigassh V1.12
* fixed some bus errors, now it really runs on 68000
* CTRL+F is now used to ***Break
* support sending CTRL+A/CTRL+E
* better mapping of backspace and delete
* stack usage is now below 4000 bytes
* added -T switch to run without pseudo terminal
amigassh V1.11
* reworked and combined the ed25519 and curve25519 code.
Now 16 bit integers are sufficient!
* the resulting program can now be used on a 68000.
amigassh V1.10
* fix an enforcer hit (using updated binutils/gcc)
amigassh V1.9
* renamed `mono` to `xterm-amiga`. Install it!
Necessary since too many stuff checks for the string `xterm`...
* added mouse support
* patch the window title, like xterm
* suppres right mouse button stuff, also during login
amigassh V1.8
* support tooltype CONSOLE
* modify __chkabort: use CTRL+E to interrupt amigassh,
CTRL+C is handled only by the host
* TERM can be set by an environment variable or define it in the icon
* fixed an enforcer hit
amigassh V1.7
* fix broken window resize - was filtered too...
amigassh V1.6
* add key mappings for CTRL+ALT+CURSOR -> PgUp/Down,Pos1/End
* pass CTRL+D and make it work
* print preauth banner
* support CTRL+S/CTRL+Q
* suppress menu messages from KingCON
amigassh V1.5
* fix build...
* support redirected stdin/stdout
amigassh V1.4
* bad version...
amigassh V1.3
* amigassh is now pure. set the flag and make it resident!
* internal setting of a suitable stack size
* verbose error messages
* unify ed25519/curve25519 code
* properly create ENVARC:.ssh if missing
* some terminal improvements
amigassh V1.2
* properly exit after logout, no CTRL+D required
* mono now supports 8 colors - update that file!
* handle key stroke repetition
* bind local, needed by roadshow
* fix reading after buffer pointer changed
amigassh V1.1
* some support for CTRL/ALT,
* better cursor keys,
* better terminfo `mono`
* fix if stdin is a file/pipe
amigassh V1.0
* initial version
===============================================================================
SYNOPSIS
amigassh [-p port] [user]host[:port]
The port defaults to 22.
The user is read from the environment variable `USER`.
===============================================================================
DESCRIPTION
amigassh is an implementation of SSH2. The supported cryptographic methods are
* curve25519-sha256
* ssh-ed25519
* aes128-gcmopenssh.com
* hmac-sha2-256
* sha512
Only password based authentication is supported for now.
Install the terminfo `xterm-amiga` on the remote system!
Feel free to improve it!
On many systems you have to copy it as root into `/usr/share/terminfo/x`
Pimp your `.bash_profile` to unset `LANG` since the Amiga doesn't like UTF8...
A convenient way is to add this to `.bash_profile`:
```
if [ "$TERM" == "xterm-amiga" ]; then
unset LANG
fi
```
===============================================================================
RANDOM HINTS
* the know hosts are stored in `ENVARC:.ssh/known-hosts`
* the random generator is not the best...
It's rand() pimped with time and vpos. Then SHA256 is applied. Good enough?
But who would talk about security on an unprotected system like the Amiga?
* preset your username with
set USER=<yourname>
you can do this in `s:shell-startup`
* You can start it from the workbench!
Use the icon tooltypes to set
COMMAND a remote command to execute instead of a shell
CONSOLE an Amiga console string (defaults to CON://///AUTO/CLOSE/WAIT)
HOST the host name
PORT the port (defaults to 22)
TERM the terminal emulation (defaults to xterm-amiga)
USER the user name
* no console graphics?
install the `xterm-amiga` terminfo!
* no console colors?
install the `xterm-amiga` terminfo!
* no mouse in mc or other applications?
install the `xterm-amiga` terminfo!
* keys not working properly?
install the `xterm-amiga` terminfo!
* some key does still not work
try pimping the xterm-amiga terminfo.
use `tic -xsv9 -o. xterm-amiga.src`
* console displays trash? text look blank? lines are bogus?
unset the variable `LANG`
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