dns, WIP autoconfiguration, context...
Philippe PITTOLI
parent
3b6073a949
commit
90e1aaa20d
171
src/main.cr
171
src/main.cr
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@ -3,51 +3,57 @@ require "option_parser"
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require "ipaddress"
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require "./colors"
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simulation = false
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file = nil
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class Context
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class_property root : String = "/"
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class_property simulation = false
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class_property verbosity = 1
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prefered_network_configuration_program = nil
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prefered_wireless_configuration_program = nil
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prefered_dhcp_client = nil
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class_property prefered_network_configuration_program : String? = nil
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class_property prefered_wireless_configuration_program : String? = nil
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class_property prefered_dhcp_client : String? = nil
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root = "/"
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print_autodetect = false
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class_property root = "/"
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class_property print_autodetect = false
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command = "list"
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args = Array(String).new
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class_property command = "list"
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class_property args = Array(String).new
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end
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file_option : String? = nil
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OptionParser.parse! do |parser|
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parser.on "-s", "--simulation", "Export the network configuration." do
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simulation = true
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Context.simulation = true
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end
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parser.on "-a", "--print-autodetect", "Print autodetection of the installed programs." do
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print_autodetect = true
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Context.print_autodetect = true
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end
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parser.on "-w wireless-configuration-program", "--wireless wireless-configuration-program", "iw" do |prog|
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prefered_wireless_configuration_program = prog
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Context.prefered_wireless_configuration_program = prog
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end
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parser.on "-n network-configuration-program", "--net-conf network-configuration-program", "ifconfig | ip" do |prog|
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prefered_network_configuration_program = prog
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Context.prefered_network_configuration_program = prog
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end
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parser.on "-d dhcp-client-program", "--dhcp-client dhcp-client-program", "udhcpc | dhclient" do |prog|
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prefered_dhcp_client = prog
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Context.prefered_dhcp_client = prog
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end
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parser.on "-r root", "--root root", "Root where to search for <root>/etc/hostname.* files." do |optsn|
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root = optsn
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Context.root = optsn
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end
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parser.on "-f file", "--file file", "Parse a configuration file." do |optsn|
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file = optsn
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file_option = optsn
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end
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# 0: nothing is printed, 1: only events, 2: events and messages
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parser.on "-v verbosity", "--verbosity verbosity", "Verbosity (0-2). Default: 1" do |optsn|
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verbosity = optsn.to_i
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Context.verbosity = optsn.to_i
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end
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parser.missing_option do |opt|
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@ -62,16 +68,16 @@ OptionParser.parse! do |parser|
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end
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parser.unknown_args do |arg|
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command = arg.shift
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args = arg
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Context.command = arg.shift
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Context.args = arg
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case command
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case Context.command
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when /^(list)/
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when /^(up)/
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when /^(down)/
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when /^(scan)/
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else
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STDERR.puts "Command #{command} not understood"
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STDERR.puts "Command #{Context.command} not understood"
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exit 1
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end
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@ -115,6 +121,12 @@ class NotSetup
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end
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end
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class Autoconfiguration
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def to_s(io : IO)
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io << "autoconfiguration"
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end
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end
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class DHCP
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def to_s(io : IO)
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io << "dhcp"
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@ -127,6 +139,21 @@ class NetworkCommands
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class_property cmd_wireless_configuration : IfconfigCommand.class | IWCommand.class | NotSetup.class = NotSetup
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class_property cmd_dhcp_client : UDHCPCCommand.class | DHClientCommand.class | NotSetup.class = NotSetup
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class DNS
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def initialize(@addresses : Array(String), @search : Array(String))
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end
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def execute
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File.open("#{Context.root}/etc/resolv.conf", "w") do |file|
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@addresses.each do |address|
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file.puts "nameserver #{address}\n"
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end
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file.puts "search #{@search.join(" ")}"
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end
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end
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end
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class IWCommand
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# get the available SSID
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def self.scan(ifname : String) : Array(String)
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@ -338,6 +365,10 @@ class NetworkCommands
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end
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end
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def self.autoconfiguration(ifname : String)
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puts "TODO: IPv6 autoconfiguration setup"
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end
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def self.wireless_connect_wpa_psk(ifname : String, ssid : String, passwd : String)
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cmd = @@cmd_wireless_configuration
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case cmd
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@ -358,7 +389,7 @@ class WirelessAPSetup
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property description : String?
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property mtu : Int32?
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property main_ip_v4 : IPAddress | DHCP | NotSetup
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property main_ip_v6 : IPAddress | DHCP | NotSetup
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property main_ip_v6 : IPAddress | DHCP | Autoconfiguration | NotSetup
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property aliasses_v4 : Array(IPAddress)
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property aliasses_v6 : Array(IPAddress)
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property dns : Array(IPAddress)
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@ -397,29 +428,23 @@ class WirelessAPSetup
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# ipv4
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unless main_ip_v4.is_a?(NotSetup)
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str << "\t\tinet #{main_ip_v4}\n"
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end
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aliasses_v4.each do |a|
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str << "\t\talias #{a}\n"
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aliasses_v4.each do |a|
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str << "\t\talias #{a}\n"
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end
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end
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# ipv6
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unless main_ip_v6.is_a?(NotSetup)
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str << "\t\tinet6 #{main_ip_v6}\n"
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end
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unless @aliasses_v6.empty?
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@aliasses_v6.each do |a|
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str << "\t\talias6 #{a}\n"
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end
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end
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if dns.empty?
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str << "\t\tno dns configured\n"
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else
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dns.each do |ip|
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str << "\t\tdns: #{ip}\n"
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end
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dns.each do |ip|
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str << "\t\tdns: #{ip}\n"
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end
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# to improve readability
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@ -441,7 +466,7 @@ class InterfaceConfiguration
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property mtu : Int32?
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property wireless : Bool
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property main_ip_v4 : IPAddress | DHCP | NotSetup
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property main_ip_v6 : IPAddress | DHCP | NotSetup
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property main_ip_v6 : IPAddress | Autoconfiguration | DHCP | NotSetup
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property aliasses_v4 : Array(IPAddress)
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property aliasses_v6 : Array(IPAddress)
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property wireless_networks : Hash(String, WirelessAPSetup)
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@ -490,25 +515,33 @@ class InterfaceConfiguration
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# ipv4
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unless main_ip_v4.is_a?(NotSetup)
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str << "\tinet #{main_ip_v4}\n"
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end
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unless aliasses_v4.empty?
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aliasses_v4.each do |a|
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str << "\talias #{a}\n"
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end
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end
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# warning: alias but no main ip address
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if main_ip_v4.is_a?(NotSetup) && ! aliasses_v4.empty?
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str << "\t#{CRED}alias configured but no main ipv4 configuration.#{CRESET}\n"
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str << "\t#{CRED}Should main ipv4 be obtained from DHCP? Static configuration?#{CRESET}\n"
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end
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# ipv6
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unless main_ip_v6.is_a?(NotSetup)
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str << "\tinet6 #{main_ip_v6}\n"
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end
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unless aliasses_v6.empty?
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aliasses_v6.each do |a|
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str << "\talias6 #{a}\n"
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end
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end
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# warning: alias but no main ip address
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if main_ip_v6.is_a?(NotSetup) && ! aliasses_v6.empty?
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str << "\t#{CRED}alias6 configured but no main ipv6 configuration.#{CRESET}\n"
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str << "\t#{CRED}Should main ipv6 be obtained from autoconfiguration? DHCP? Static configuration?#{CRESET}\n"
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end
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unless dns.empty?
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dns.each do |ip|
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str << "\tdns: #{ip}\n"
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@ -531,6 +564,17 @@ class InterfaceConfiguration
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raise "The interface #{@name} doesn't exists, yet."
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end
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# TODO: treat differently wireless and non-wireless interfaces
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if @wireless
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puts "interface #{name} is wireless"
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puts "TODO:"
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puts "1. scan for SSID"
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puts "2. select configured SSID then try to connect"
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puts "3. connectivity check with the gateway"
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else
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puts "interface #{name} is not wireless"
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end
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if up
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NetworkCommands.up name
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else
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@ -569,19 +613,22 @@ class InterfaceConfiguration
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# ipv6 configuration
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main_ip_v6.tap do |ip|
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puts "CONFIGURATION IPV6"
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case ip
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when IPAddress
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NetworkCommands.set_ip name, ip
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# TODO
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#when Autoconfiguration
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# NetworkCommands.autoconfiguration name
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when Autoconfiguration
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puts "CONFIGURATION IPV6 : autoconfiguration !!!"
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NetworkCommands.autoconfiguration name
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#when DHCP
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# NetworkCommands.dhcp6 name
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when NotSetup
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# do nothing
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puts "CONFIGURATION IPV6 : not setup !!!"
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else
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raise "ipv4 configuration: neither static nor dynamic"
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raise "ipv6 configuration: neither static nor dynamic"
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end
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# We wont setup aliasses unless there is an actual IP address
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@ -661,7 +708,7 @@ class NetworkConfigurationParser
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end
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when /^inet6 autoconf/
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# IP address is autoconfigured
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puts "TODO: IPv6 autoconfiguration"
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main_ip_v6 = Autoconfiguration.new
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when /^inet6? .*/
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ipstr = /^inet6? ([a-f0-9:.\/]+)/.match(line).try &.[1]
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@ -710,8 +757,9 @@ class NetworkConfigurationParser
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next
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end
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# TODO
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access_point = wireless_networks[ssid].not_nil!
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access_point.main_ip_v6 = Autoconfiguration.new
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puts "for SSID: #{ssid} ipv6 configuration = autoconf"
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when /^network [^ \t]+ inet6? .*/
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ssid = nil
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@ -841,8 +889,8 @@ class Autodetect
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end
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Do.simulation = simulation
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Autodetect.print_autodetect = print_autodetect
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Do.simulation = Context.simulation
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Autodetect.print_autodetect = Context.print_autodetect
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#
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# discover available configuration commands
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@ -867,17 +915,17 @@ possible_wireless_configuration_cmds = {
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"ifconfig" => NetworkCommands::IfconfigCommand
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}
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key = prefered_network_configuration_program
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key = Context.prefered_network_configuration_program
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key = possible_network_configuration_cmds.keys.find { |key| Autodetect.which(key) } if key.nil?
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# should crash if there is no network command installed
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NetworkCommands.cmd_network_configuration = possible_network_configuration_cmds[key.not_nil!]
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key = prefered_dhcp_client
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key = Context.prefered_dhcp_client
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key = possible_dhcp_clients.keys.find { |key| Autodetect.which(key) } if key.nil?
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# should not crash if there is no
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NetworkCommands.cmd_dhcp_client = possible_dhcp_clients[key] unless key.nil?
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key = prefered_wireless_configuration_program
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key = Context.prefered_wireless_configuration_program
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key = possible_wireless_configuration_cmds.keys.find { |key| Autodetect.which(key) } if key.nil?
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# should crash if there is no wireless command installed
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NetworkCommands.cmd_wireless_configuration = possible_wireless_configuration_cmds[key.not_nil!]
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@ -885,7 +933,7 @@ NetworkCommands.cmd_wireless_configuration = possible_wireless_configuration_cmd
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files = Array(String).new
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Dir.children("#{root}/etc/").each do |f|
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Dir.children("#{Context.root}/etc/").each do |f|
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if /^hostname\./.match(f)
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files << f
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end
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@ -893,46 +941,43 @@ end
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interface_files = Array(String).new
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if ! file.nil?
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if ! file_option.nil?
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# file passed via the '-f' option
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# TODO: why having to force "not_nil!" ? Seems like a compiler bug
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interface_files << file.not_nil!
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elsif args.empty?
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interface_files << file_option.not_nil!
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elsif Context.args.empty?
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# every configured interface
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files.each do |f|
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interface_files << "#{root}/etc/#{f}"
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interface_files << "#{Context.root}/etc/#{f}"
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end
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else
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# only interfaces in arguments
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args.each do |interface|
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interface_files << "#{root}/etc/hostname.#{interface}"
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Context.args.each do |interface|
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interface_files << "#{Context.root}/etc/hostname.#{interface}"
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end
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end
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begin
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case command
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case Context.command
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when "list"
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interface_files.each do |f|
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puts NetworkConfigurationParser.parse_file(f.not_nil!)
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puts NetworkConfigurationParser.parse_file(f)
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end
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when "up"
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# TODO: why having to force "not_nil!" ? Seems like a compiler bug
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interface_files.each do |f|
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network_configuration = NetworkConfigurationParser.parse_file(f.not_nil!)
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network_configuration = NetworkConfigurationParser.parse_file(f)
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network_configuration.execute
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end
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when "down"
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# TODO: why having to force "not_nil!" ? Seems like a compiler bug
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interface_files.each do |f|
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network_configuration = NetworkConfigurationParser.parse_file(f.not_nil!)
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network_configuration = NetworkConfigurationParser.parse_file(f)
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network_configuration.down
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end
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when "scan"
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# TODO: why having to force "not_nil!" ? Seems like a compiler bug
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interface_files.each do |f|
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network_configuration = NetworkConfigurationParser.parse_file(f.not_nil!)
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network_configuration = NetworkConfigurationParser.parse_file(f)
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network_configuration.scan
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end
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end
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