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#!/usr/bin/env python3
#
# Copyright (C) 2018 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# File: live-build-config
# Purpose:
#   Creates a live-build config command from template using the build config
#   and executes it, to prepare the system for building the installation ISO.


import sys
import os
import json

import pystache

import defaults
import util

util.check_build_config()

lb_config_tmpl = """
lb config noauto \
        --architectures {{architecture}} \
        --bootappend-live "boot=live components hostname=vyos username=live nopersistence noautologin nonetworking union=overlay" \
        --linux-flavours {{architecture}}-vyos \
        --linux-packages linux-image-4.4.95 \
        --bootloader syslinux \
        --binary-images iso-hybrid \
        --debian-installer false \
        --distribution jessie \
        --iso-application "VyOS" \
        --iso-publisher "{{build_by}}" \
        --iso-volume "VyOS" \
        --debootstrap-options "--variant=minbase --exclude=isc-dhcp-client,isc-dhcp-common,ifupdown" \
        --mirror-bootstrap {{debian_mirror}} \
        --mirror-chroot {{debian_mirror}} \
        --mirror-chroot-security {{debian_security_mirror}} \
        --mirror-binary {{debian_mirror}} \
        --mirror-binary-security {{debian_security_mirror}} \
        --archive-areas "main contrib non-free" \
        --firmware-chroot true \
        --updates true \
        --security true
        "${@}"
"""

with open(defaults.BUILD_CONFIG, 'r') as f:
     build_config = json.load(f)

debug = build_config['debug']

# Add the additional repositories to package lists
print("Setting up additional APT entries")
vyos_repo_entry = "deb {0} {1} main\n".format(build_config['vyos_mirror'], build_config['vyos_branch'])

apt_file = os.path.join(build_config['build_dir'], defaults.VYOS_REPO_FILE)

if debug:
    print("Adding these entries to {0}:".format(apt_file))
    print("\t", vyos_repo_entry)

with open(apt_file, 'w') as f:
    f.write(vyos_repo_entry)

# Configure live-build

lb_config_command = pystache.render(lb_config_tmpl, build_config)

print("Configuring live-build")

os.chdir(defaults.BUILD_DIR)
result = os.system(lb_config_command)
if result > 0:
    print("live-build config failed")
    sys.exit(1)