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✏️ Editing: git_ssh

#!/bin/bash
# Copyright 1999-2016. Parallels IP Holdings GmbH. All Rights Reserved.
usage()
{
	echo "Usage: $0 [-p <port>] <hostname> [<args>...]" >&2
	exit 2
}

update_known_hosts()
{
	local port= server= offset=0

if [ "$1" = "-o" ]; then
    offset=2
	fi

option_arg_num=$((offset+1))
	if [ "${!option_arg_num}" = "-p" ]; then
		port_offset=$((offset+2))
		server_offset=$((offset+3))

port="${!port_offset}"
		server="${!server_offset}"
	else
		server_offset=$((offset+1))
		server="${!server_offset}"
	fi

local hostname="`echo "$server" | cut -d@ -f2`"
	local server_addr="$hostname${port:+:$port}"

KNOWN_HOSTS="`readlink -m ~/.ssh/git_known_hosts${port:+_with_port_$port}`"

if [ -f "$KNOWN_HOSTS" ] && [ -n "`ssh-keygen -F "$hostname" -f "$KNOWN_HOSTS"`" ]; then
		echo "Public key for the server at '$server_addr' is already known in '$KNOWN_HOSTS'." >&2
		return 0
	fi

echo "Server at '$server_addr' is seen for the first time." >&2
	echo "Adding its public key to the list of known hosts in '$KNOWN_HOSTS'." >&2

local key="`ssh-keyscan ${port:+-p $port} -H "$hostname"`"
	[ -n "$key" ] || {
		echo "Failed to gather public SSH host key for the '$server_addr'." >&2
		return 1
	}

mkdir -p -m0700 "`dirname "$KNOWN_HOSTS"`"
	echo "$key" >> "$KNOWN_HOSTS" || {
		echo "Failed to add public SSH host key for the '$server_addr' into '$KNOWN_HOSTS'." >&2
		return 1
	}

return 0
}

[ $# -ge 1 ] || usage

KNOWN_HOSTS=
update_known_hosts "$@"

[ -f "$KNOWN_HOSTS" ] || {
	echo "Known hosts file '$KNOWN_HOSTS' doesn't exist" >&2
	exit 1
}

if [ -z "$PLESK_SSH_KEY_PATH" ]
then
ssh -o UserKnownHostsFile="$KNOWN_HOSTS" -o StrictHostKeyChecking=yes -o HashKnownHosts=yes -o BatchMode=yes "$@"
else
ssh -i "$PLESK_SSH_KEY_PATH" -o UserKnownHostsFile="$KNOWN_HOSTS" -o StrictHostKeyChecking=yes -o HashKnownHosts=yes -o BatchMode=yes "$@"
fi

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