#!/bin/bash

echo $0
set -e

# Ubuntu trusty 14.04's paramiko does not work with jessie's openssh's default settings
# https://stackoverflow.com/questions/7286929/paramiko-incompatible-ssh-peer-no-acceptable-kex-algorithm/32691055#32691055

if ! grep --quiet ^Ciphers /etc/ssh/sshd_config; then
    echo Ciphers aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes128-ctr >> /etc/ssh/sshd_config
fi

if ! grep --quiet ^MACs /etc/ssh/sshd_config; then
    echo MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,hmac-ripemd160,hmac-sha1 >> /etc/ssh/sshd_config
fi

if ! grep --quiet ^KexAlgorithms /etc/ssh/sshd_config; then
    echo KexAlgorithms diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1 >> /etc/ssh/sshd_config
fi