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Determine prefix with netmask

This commit is contained in:
Brian Cain 2019-10-09 15:40:36 -07:00
parent 62b7e35169
commit 8458a21657
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GPG Key ID: 9FC4639B2E4510A0
2 changed files with 21 additions and 8 deletions
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17
plugins/providers/docker/action/prepare_networks.rb
View File

@ -191,7 +191,8 @@ module VagrantPlugins
base_opts[:opt] = "parent=#{bridge_interface.name}"
subnet = IPAddr.new(bridge_interface.addr.ip_address <<
"/" << bridge_interface.netmask.ip_unpack.first)
prefix = subnet.ipv4? ? 24 : 64
netmask = bridge_interface.netmask.ip_unpack.first
prefix = IPAddr.new("255.255.255.255/#{netmask}").to_i.to_s(2).count("1")
base_opts[:subnet] = "#{subnet}/#{prefix}"
subnet_addr = IPAddr.new(base_opts[:subnet])
base_opts[:driver] = "macvlan"
@ -214,7 +215,7 @@ module VagrantPlugins
network_options, bridge_interface.name, env)
end
network_options[:ip_range] = request_public_iprange(
network_options, bridge_interface.name, env)
network_options, bridge_interface, env)
end
end
[network_name, network_options]
@ -259,7 +260,7 @@ module VagrantPlugins
# public network
#
# @param [Hash] network_options Docker scoped networking options
# @param [String] interface The bridge interface used
# @param [Socket::Ifaddr] interface The bridge interface used
# @param [Hash] env Local call env
# @return [String] Address range
def request_public_iprange(network_options, interface, env)
@ -273,7 +274,7 @@ module VagrantPlugins
while !range
range = env[:ui].ask(I18n.t(
"docker_provider.network_bridge_iprange_request",
interface: interface,
interface: interface.name,
default_range: network_options[:subnet]) + " ",
prefix: false
).strip
@ -283,10 +284,12 @@ module VagrantPlugins
begin
range = IPAddr.new(range)
if !subnet.include?(range)
netmask = interface.netmask.ip_unpack.first
prefix = IPAddr.new("255.255.255.255/#{netmask}").to_i.to_s(2).count("1")
env[:ui].warn(I18n.t(
"docker_provider.network_bridge_iprange_outofbounds",
subnet: network_options[:subnet],
range: "#{range}/#{range.prefix}"
range: "#{range}/#{prefix}"
) + "\n", prefix: false)
range = nil
end
@ -297,7 +300,9 @@ module VagrantPlugins
range = nil
end
end
prefix = range.ipv4? ? 24 : 64
netmask = interface.netmask.ip_unpack.first
prefix = IPAddr.new("255.255.255.255/#{netmask}").to_i.to_s(2).count("1")
"#{range}/#{prefix}"
end

12
test/unit/plugins/providers/docker/action/prepare_networks_test.rb
View File

@ -305,7 +305,8 @@ describe VagrantPlugins::DockerProvider::Action::PrepareNetworks do
describe "#process_public_network" do
let(:options) { {:ip=>"172.30.130.2", :subnet=>"172.30.0.0/16", :driver=>"bridge", :id=>"30e017d5-488f-5a2f-a3ke-k8dce8246b60"} }
let(:ipaddr) { double("ipaddr", prefix: 22, succ: "10.1.10.2", ipv4?: true, ipv6?: false) }
let(:ipaddr) { double("ipaddr", prefix: 22, succ: "10.1.10.2", ipv4?: true,
ipv6?: false, to_i: 4294967040) }
it "raises an error if there are no network interfaces" do
expect(subject).to receive(:list_interfaces).and_return([])
@ -351,13 +352,20 @@ describe VagrantPlugins::DockerProvider::Action::PrepareNetworks do
let(:subnet) { double("ipaddr", to_s: "172.30.130.2", prefix: 22, succ: "172.30.130.3",
ipv6?: false) }
let(:ipaddr_prefix) { double("ipaddr_prefix", to_s: "255.255.255.255/255.255.255.0",
to_i: 4294967040 ) }
let(:netmask) { double("netmask", ip_unpack: ["255.255.255.0", 0]) }
let(:interface) { double("interface", name: "bridge", netmask: netmask) }
it "requests a public ip range" do
allow(IPAddr).to receive(:new).with(options[:subnet]).and_return(subnet)
allow(IPAddr).to receive(:new).with("172.30.130.2").and_return(ipaddr)
allow(IPAddr).to receive(:new).with("255.255.255.255/255.255.255.0").and_return(ipaddr_prefix)
allow(subnet).to receive(:include?).and_return(true)
allow(machine.ui).to receive(:ask).and_return(options[:ip])
addr = subject.request_public_iprange(options, "bridge", env)
addr = subject.request_public_iprange(options, interface, env)
end
end
end