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#!/bin/bash
if [ ! -d /data/ssh ]; then
mkdir -p /data/ssh
fi
if [ ! -f /data/ssh/ssh_host_ed25519_key ]; then
echo "Generating /data/ssh/ssh_host_ed25519_key..."
ssh-keygen -t ed25519 -f /data/ssh/ssh_host_ed25519_key -N "" > /dev/null
fi
if [ ! -f /data/ssh/ssh_host_rsa_key ]; then
echo "Generating /data/ssh/ssh_host_rsa_key..."
ssh-keygen -t rsa -b 3072 -f /data/ssh/ssh_host_rsa_key -N "" > /dev/null
fi
if [ ! -f /data/ssh/ssh_host_ecdsa_key ]; then
echo "Generating /data/ssh/ssh_host_ecdsa_key..."
ssh-keygen -t ecdsa -b 256 -f /data/ssh/ssh_host_ecdsa_key -N "" > /dev/null
fi
if [ -e /data/ssh/ssh_host_ed25519_cert ]; then
SSH_ED25519_CERT=${SSH_ED25519_CERT:-"/data/ssh/ssh_host_ed25519_cert"}
fi
if [ -e /data/ssh/ssh_host_rsa_cert ]; then
SSH_RSA_CERT=${SSH_RSA_CERT:-"/data/ssh/ssh_host_rsa_cert"}
fi
if [ -e /data/ssh/ssh_host_ecdsa_cert ]; then
SSH_ECDSA_CERT=${SSH_ECDSA_CERT:-"/data/ssh/ssh_host_ecdsa_cert"}
fi
if [ -d /etc/ssh ]; then
SSH_PORT=${SSH_PORT:-"22"} \
SSH_LISTEN_PORT=${SSH_LISTEN_PORT:-"${SSH_PORT}"} \
SSH_ED25519_CERT="${SSH_ED25519_CERT:+"HostCertificate "}${SSH_ED25519_CERT}" \
SSH_RSA_CERT="${SSH_RSA_CERT:+"HostCertificate "}${SSH_RSA_CERT}" \
SSH_ECDSA_CERT="${SSH_ECDSA_CERT:+"HostCertificate "}${SSH_ECDSA_CERT}" \
SSH_MAX_STARTUPS="${SSH_MAX_STARTUPS:+"MaxStartups "}${SSH_MAX_STARTUPS}" \
SSH_MAX_SESSIONS="${SSH_MAX_SESSIONS:+"MaxSessions "}${SSH_MAX_SESSIONS}" \
SSH_INCLUDE_FILE="${SSH_INCLUDE_FILE:+"Include "}${SSH_INCLUDE_FILE}" \
SSH_LOG_LEVEL=${SSH_LOG_LEVEL:-"INFO"} \
envsubst < /etc/templates/sshd_config > /etc/ssh/sshd_config
chmod 0644 /etc/ssh/sshd_config
fi
chown root:root /data/ssh/*
chmod 0700 /data/ssh
chmod 0600 /data/ssh/*
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