package network::tools; # $Id: tools.pm 253976 2009-03-13 10:57:55Z eugeni $ use strict; use lib qw(/usr/lib/libDrakX); # helps perl_checker use common; use run_program; use c; use Socket; sub write_secret_backend { my ($login, $password) = @_; require network::connection::ppp; network::connection::ppp::write_secrets({ access => { login => $login, password => $password } }); } sub passwd_by_login { my ($login) = @_; require network::connection::ppp; network::connection::ppp::get_secret(undef, $login); } sub run_interface_command { my ($command, $intf, $detach) = @_; my @command = !$> || system("/usr/sbin/usernetctl $intf report") == 0 ? ($command, $intf, if_(!$::isInstall, "daemon")) : common::wrap_command_for_root($command, $intf); run_program::raw({ detach => $detach, root => $::prefix }, @command); } sub start_interface { my ($intf, $detach) = @_; run_interface_command('/sbin/ifup', $intf, $detach); } sub stop_interface { my ($intf, $detach) = @_; run_interface_command('/sbin/ifdown', $intf, $detach); } sub start_net_interface { my ($net, $detach) = @_; start_interface($net->{net_interface}, $detach); } sub stop_net_interface { my ($net, $detach) = @_; stop_interface($net->{net_interface}, $detach); } sub connected() { # if no resolv.conf from stage1, use the one we wrote in chroot: if ($::isInstall && ! -e "/etc/resolv.conf") { symlink "$::prefix/etc/resolv.conf", "/etc/resolv.conf"; } c::res_init(); # reinit the resolver so DNS changes take affect gethostbyname("www.mageia.org") ? 1 : 0; } # request a ref on a bg_connect and a ref on a scalar sub connected_bg__raw { my ($kid_pipe, $status) = @_; local $| = 1; if (ref($kid_pipe) && ref($$kid_pipe)) { my $fd = $$kid_pipe->{fd}; common::nonblock($fd); my $a = <$fd>; $$status = $a if defined $a; } else { $$kid_pipe = check_link_beat() } } my $kid_pipe; sub connected_bg { my ($status) = @_; connected_bg__raw(\$kid_pipe, $status); } # test if connected; # cmd = 0 : ask current status # return : 0 : not connected; 1 : connected; -1 : no test ever done; -2 : test in progress # cmd = 1 : start new connection test # return : -2 # cmd = 2 : cancel current test # return : nothing # cmd = 3 : return current status even if a test is in progress my $kid_pipe_connect; my $current_connection_status; sub test_connected { local $| = 1; my ($cmd) = @_; $current_connection_status = -1 if !defined $current_connection_status; if ($cmd == 0) { connected_bg__raw(\$kid_pipe_connect, \$current_connection_status); } elsif ($cmd == 1) { if ($current_connection_status != -2) { $current_connection_status = -2; $kid_pipe_connect = check_link_beat(); } } elsif ($cmd == 2) { if (defined($kid_pipe_connect)) { kill -9, $kid_pipe_connect->{pid}; undef $kid_pipe_connect; } } return $current_connection_status; } sub check_link_beat() { bg_command->new(sub { require Net::Ping; my $p; if ($>) { $p = Net::Ping->new("tcp"); # Try connecting to the www port instead of the echo port $p->{port_num} = getservbyname("http", "tcp"); } else { $p = Net::Ping->new("icmp"); } print $p->ping("www.mageia.org") ? 1 : 0; }); } sub is_dynamic_ip { my ($net) = @_; any { $_->{BOOTPROTO} !~ /^(none|static|)$/ } values %{$net->{ifcfg}}; } sub is_dynamic_host { my ($net) = @_; any { defined $_->{DHCP_HOSTNAME} } values %{$net->{ifcfg}}; } #- returns interface whose IP address matchs given IP address, according to its network mask sub find_matching_interface { my ($net, $address) = @_; my @ip = split '\.', $address; find { my @intf_ip = split '\.', $net->{ifcfg}{$_}{IPADDR} or return; my @mask = split '\.', $net->{ifcfg}{$_}{NETMASK} or return; every { $_ } mapn { ($_[0] & $_[2]) == ($_[1] & $_[2]) } \@intf_ip, \@ip, \@mask; } sort keys %{$net->{ifcfg}}; } #- returns the current gateway, with lowest metric sub get_current_gateway_interface() { my $routes = get_routes(); first(sort { $routes->{$a}{metric} <=> $routes->{$b}{metric} } grep { $routes->{$_}{network} eq '0.0.0.0' && $routes->{$_}{gateway}; } keys %$routes); } #- returns gateway interface if found sub get_default_gateway_interface { my ($net) = @_; my @intfs = sort keys %{$net->{ifcfg}}; get_current_gateway_interface() || $net->{network}{GATEWAYDEV} || $net->{network}{GATEWAY} && find_matching_interface($net, $net->{network}{GATEWAY}) || (find { get_interface_type($net->{ifcfg}{$_}) eq 'adsl' } @intfs) || (find { get_interface_type($net->{ifcfg}{$_}) eq 'isdn' && text2bool($net->{ifcfg}{$_}{DIAL_ON_IFUP}) } @intfs) || (find { get_interface_type($net->{ifcfg}{$_}) eq 'modem' } @intfs) || (find { get_interface_type($net->{ifcfg}{$_}) eq 'wifi' && $net->{ifcfg}{$_}{BOOTPROTO} eq 'dhcp' } @intfs) || (find { get_interface_type($net->{ifcfg}{$_}) eq 'ethernet' && $net->{ifcfg}{$_}{BOOTPROTO} eq 'dhcp' } @intfs); } #- remove suffix from virtual interfaces sub get_real_interface { my ($intf) = @_; $intf =~ s/:\d+$//; $intf; } sub is_virtual_interface { my ($intf) = @_; $intf =~ /:\d+$/; } sub is_vlan_interface { my ($intf) = @_; $intf =~ /\.\d+$/; } sub is_real_interface { my ($intf) = @_; !is_virtual_interface($intf) && !is_vlan_interface($intf); } sub is_zeroconf_interface { my ($intf) = @_; is_virtual_interface($intf) && get_interface_ip_address({}, $intf) =~ /^(127|169\.254)\./; } sub get_interface_status { my ($intf) = @_; $intf = get_real_interface($intf); my $routes = get_routes(); return $routes->{$intf}{network}, $routes->{$intf}{network} eq '0.0.0.0' && $routes->{$intf}{gateway}; } #- returns (gateway_interface, interface is up, gateway address, dns server address) sub get_default_connection { my ($net, $o_gw_intf) = @_; my $gw_intf = $o_gw_intf || get_default_gateway_interface($net) or return; $net->{resolv} = {}; require network::network; add2hash($net->{resolv}, network::network::read_resolv_conf()); return $gw_intf, get_interface_status($gw_intf), $net->{resolv}{dnsServer}; } sub has_network_connection() { (undef, undef, my $gw_address) = get_default_connection({}); to_bool($gw_address); } sub get_interface_type { my ($interface, $o_module) = @_; require detect_devices; member($interface->{TYPE}, "xDSL", "ADSL") && "adsl" || $interface->{DEVICE} =~ /^ippp/ && "isdn" || $interface->{DEVICE} =~ /^ppp/ && "modem" || (detect_devices::is_wireless_interface($interface->{DEVICE}) || exists $interface->{WIRELESS_MODE}) && "wifi" || detect_devices::is_lan_interface($interface->{DEVICE}) && ($o_module && member($o_module, list_modules::category2modules('network/gigabit')) ? "ethernet_gigabit" : "ethernet") || "unknown"; } sub get_interface_description { my ($net, $interface_name) = @_; my $type = get_interface_type($net->{ifcfg}{$interface_name}); #- FIXME: find interface description (from PCI/USB data) and translate $type eq 'adsl' ? "DSL: $interface_name" : $type eq 'isdn' ? "ISDN: $interface_name" : $type eq 'modem' ? "Modem: $interface_name" : $type eq 'wifi' ? "WiFi: $interface_name" : member($type, qw(ethernet_gigabit ethernet)) ? "Ethernet: $interface_name" : $interface_name; } sub get_default_metric { my ($type) = @_; my @known_types = ("ethernet_gigabit", "ethernet", "adsl", "wifi", "isdn", "modem", "unknown"); my $idx; eval { $idx = find_index { $type eq $_ } @known_types }; $idx = @known_types if $@; $idx * 10; } sub get_interface_ip_address { my ($net, $interface) = @_; `/sbin/ip addr show dev $interface` =~ /^\s*inet\s+([\d.]+).*\s+$interface$/m && $1 || $net->{ifcfg}{$interface}{IPADDR}; } sub get_interface_ptp_address { my ($interface) = @_; my ($flags, $_link, $addrs) = `/sbin/ip addr show dev $interface`; $flags =~ /\bPOINTOPOINT\b/ or return; my ($peer) = $addrs =~ /peer\s+([\d.]+)/; return $peer if $peer; my ($addr) = $addrs =~ /inet\s+([\d.]+)/; return $addr if $addr; } sub host_hex_to_dotted { my ($address) = @_; inet_ntoa(pack('N', unpack('L', pack('H8', $address)))); } sub get_routes() { my %routes; my @routes = cat_("/proc/net/route"); @routes = reverse(@routes) if common::cmp_kernel_versions(c::kernel_version(), "2.6.39") >= 0; foreach (@routes) { if (/^(\S+)\s+([0-9A-F]+)\s+([0-9A-F]+)\s+[0-9A-F]+\s+\d+\s+\d+\s+(\d+)\s+([0-9A-F]+)/) { if (defined $3) { $routes{$1}{gateway} = hex($3) ? host_hex_to_dotted($3) : $routes{$1}{network} } if (defined $2) { $routes{$1}{network} = host_hex_to_dotted($2) } if (defined $4) { $routes{$1}{metric} = $4 } } } $routes{$_}{gateway} ||= get_interface_ptp_address($_) foreach keys %routes; #- TODO: handle IPv6 with /proc/net/ipv6_route \%routes; } 1;