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#!/usr/bin/env bash
# -*- coding: utf-8 -*-
# region imports
type emergency_shell >/dev/null 2>&1 || source /lib/dracut-lib.sh
# endregion
slx_server="$(getarg slxsrv=)"
slx_server_base="$(getarg slxbase=)"
# if no slxsrv was specified, use the server the kernel was
# downloaded from as fallback. Mostly for legacy PXE boot.
if [ -z "$slx_server" ]; then
slx_server="$(getarg BOOT_IMAGE= | awk -F[/:] '{print $4}')"
fi
if [ -z "$slx_server" ]; then
# use tftp server from ip parameter
slx_server="$(getarg ip= | awk -F: '{print $2}' )"
fi
if [ -z "$slx_server" ]; then
# we have a problem :/
emergency_shell "Failed to determine SLX server to fetch config from."
fi
# build config_url
config_url="http://${slx_server#@}/${slx_server_base}/config"
# check if system's uuid was set
if [ -s "/run/system-uuid" ]; then
uuid=$(cat "/run/system-uuid")
if [ -n "$uuid" ]; then
config_url="${config_url}?uuid=${uuid}"
fi
fi
config_path="/etc/openslx.tmp"
echo "Downloading '$config_url'..."
slx-tools download_retry --slx-time 20 -sS "$config_url" > "$config_path"
return_code="$?"
if [ ! -s "$config_path" ] ; then
emergency_shell "Downloading netboot configuration file from '$config_url' failed with: $return_code"
fi
if ! ash -n "$config_path"; then
emergency_shell "Netboot configuration failed syntax check!"
fi
# remember kcl server and base
{
echo "SLX_KCL_SERVERS='$slx_server'"
echo "SLX_BASE_PATH='$slx_server_base'"
echo "# Config fetched from $config_url"
echo "CONFIG_DOWNLOAD_TIME=$(sed -r 's/^([0-9]+)\.([0-9]+).*$/\1\2/' /proc/uptime)"
echo '#_RCONFIG_TAG'
} > /etc/openslx
# finally copy remote config into it
cat "$config_path" >> /etc/openslx
# slxsrv overrides SLX_DNBD3_SERVERS if prefixed with @
[ "${slx_server#@}" != "${slx_server}" ] && sed -i "s/^SLX_DNBD3_SERVERS=.*/SLX_DNBD3_SERVERS='${slx_server#@}'/" "/etc/openslx"
true
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