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require "tempfile"
require_relative "../../../../lib/vagrant/util/template_renderer"
module VagrantPlugins
module GuestDebian
module Cap
class ConfigureNetworks
include Vagrant::Util
def self.configure_networks(machine, networks)
comm = machine.communicate
commands = []
entries = []
interfaces = machine.guest.capability(:network_interfaces)
root_device = interfaces.first
networks.each do |network|
network[:device] = interfaces[network[:interface]]
entry = TemplateRenderer.render("guests/debian/network_#{network[:type]}",
options: network.merge(:root_device => root_device),
)
entries << entry
end
Tempfile.open("vagrant-debian-configure-networks") do |f|
f.binmode
f.write(entries.join("\n"))
f.fsync
f.close
comm.upload(f.path, "/tmp/vagrant-network-entry")
end
networks.each do |network|
# Ubuntu 16.04+ returns an error when downing an interface that
# does not exist. The `|| true` preserves the behavior that older
# Ubuntu versions exhibit and Vagrant expects (GH-7155)
commands << "/sbin/ifdown '#{network[:device]}' || true"
commands << "/sbin/ip addr flush dev '#{network[:device]}'"
end
# Reconfigure /etc/network/interfaces.
commands << <<-EOH.gsub(/^ {12}/, "")
# Remove any previous network modifications from the interfaces file
sed -e '/^#VAGRANT-BEGIN/,$ d' /etc/network/interfaces > /tmp/vagrant-network-interfaces.pre
sed -ne '/^#VAGRANT-END/,$ p' /etc/network/interfaces | tac | sed -e '/^#VAGRANT-END/,$ d' | tac > /tmp/vagrant-network-interfaces.post
cat \\
/tmp/vagrant-network-interfaces.pre \\
/tmp/vagrant-network-entry \\
/tmp/vagrant-network-interfaces.post \\
> /etc/network/interfaces
rm -f /tmp/vagrant-network-interfaces.pre
rm -f /tmp/vagrant-network-entry
rm -f /tmp/vagrant-network-interfaces.post
EOH
# Bring back up each network interface, reconfigured.
networks.each do |network|
commands << "/sbin/ifup '#{network[:device]}'"
end
# Run all the commands in one session to prevent partial configuration
# due to a severed network.
comm.sudo(commands.join("\n"))
end
end
end
end
end