package network; # $Id$ use diagnostics; use strict; #-###################################################################################### #- misc imports #-###################################################################################### use Socket; use common qw(:common :file :system :functional); use detect_devices; use run_program; use any; use log; #-###################################################################################### #- Functions #-###################################################################################### sub read_conf { my ($file) = @_; my %netc = getVarsFromSh($file); $netc{dnsServer} = delete $netc{NS0}; $netc{dnsServer2} = delete $netc{NS1}; $netc{dnsServer3} = delete $netc{NS2}; \%netc; } sub read_resolv_conf { my ($file) = @_; my @l = qw(dnsServer dnsServer2 dnsServer3); my %netc; local *F; open F, $file or die "cannot open $file: $!"; foreach () { /^\s*nameserver\s+(\S+)/ and $netc{shift @l} = $1; } \%netc; } sub read_interface_conf { my ($file) = @_; my %intf = getVarsFromSh($file) or die "cannot open file $file: $!"; $intf{BOOTPROTO} ||= 'static'; $intf{isPtp} = $intf{NETWORK} eq '255.255.255.255'; $intf{isUp} = 1; \%intf; } sub up_it { my ($prefix, $intfs) = @_; $_->{isUp} and return foreach values %$intfs; my $f = "/etc/resolv.conf"; symlink "$prefix/$f", $f; run_program::rooted($prefix, "/etc/rc.d/init.d/network", "start"); $_->{isUp} = 1 foreach values %$intfs; } sub down_it { my ($prefix, $intfs) = @_; run_program::rooted($prefix, "/etc/rc.d/init.d/network", "stop"); $_->{isUp} = 1 foreach values %$intfs; } sub write_conf { my ($file, $netc) = @_; add2hash($netc, { NETWORKING => "yes", FORWARD_IPV4 => "false", HOSTNAME => "localhost.localdomain", }); add2hash($netc, { DOMAINNAME => $netc->{HOSTNAME} =~ /\.(.*)/ }); setVarsInSh($file, $netc, qw(NETWORKING FORWARD_IPV4 HOSTNAME DOMAINNAME GATEWAY GATEWAYDEV NISDOMAIN)); } sub write_resolv_conf { my ($file, $netc) = @_; #- get the list of used dns. my %used_dns; @used_dns{$netc->{dnsServer}, $netc->{dnsServer2}, $netc->{dnsServer3}} = (1, 2, 3); unless ($netc->{DOMAINNAME} || $netc->{DOMAINNAME2} || keys %used_dns > 0) { unlink($file); log::l("neither domain name nor dns server are configured"); return 0; } my (%search, %dns, @unknown); local *F; open F, $file; foreach () { /^[#\s]*search\s+(.*?)\s*$/ and $search{$1} = $., next; /^[#\s]*nameserver\s+(.*?)\s*$/ and $dns{$1} = $., next; /^[#\s]*(\S.*?)\s*$/ and push @unknown, $1; } close F; open F, ">$file" or die "cannot write $file: $!"; print F "# search $_\n" foreach grep { $_ ne "$netc->{DOMAINNAME} $netc->{DOMAINNAME2}" } sort { $search{$a} <=> $search{$b} } keys %search; print F "search $netc->{DOMAINNAME} $netc->{DOMAINNAME2}\n\n" if ($netc->{DOMAINNAME} || $netc->{DOMAINNAME2}); print F "# nameserver $_\n" foreach grep { ! exists $used_dns{$_} } sort { $dns{$a} <=> $dns{$b} } keys %dns; print F "nameserver $_\n" foreach sort { $used_dns{$a} <=> $used_dns{$b} } grep { $_ } keys %used_dns; print F "\n"; print F "# $_\n" foreach @unknown; #-res_init(); # reinit the resolver so DNS changes take affect 1; } sub write_interface_conf { my ($file, $intf) = @_; my @ip = split '\.', $intf->{IPADDR}; my @mask = split '\.', $intf->{NETMASK}; add2hash($intf, { BROADCAST => join('.', mapn { int $_[0] | ~int $_[1] & 255 } \@ip, \@mask), NETWORK => join('.', mapn { int $_[0] & $_[1] } \@ip, \@mask), ONBOOT => bool2yesno(!member($intf->{DEVICE}, map { $_->{device} } detect_devices::probeall())), }); setVarsInSh($file, $intf, qw(DEVICE BOOTPROTO IPADDR NETMASK NETWORK BROADCAST ONBOOT)); } sub add2hosts { my ($file, $hostname, @ips) = @_; my %l; $l{$_} = $hostname foreach @ips; local *F; if (-e $file) { open F, $file or die "cannot open $file: $!"; /\s*(\S+)(.*)/ and $l{$1} ||= $2 foreach ; } log::l("writing host information to $file"); open F, ">$file" or die "cannot write $file: $!"; while (my ($ip, $v) = each %l) { $ip or next; print F "$ip"; if ($v =~ /^\s/) { print F $v; } else { print F "\t\t$v"; print F " $1" if $v =~ /(.*?)\./; } print F "\n"; } } # The interface/gateway needs to be configured before this will work! sub guessHostname { my ($prefix, $netc, $intf) = @_; $intf->{isUp} && dnsServers($netc) or return 0; $netc->{HOSTNAME} && $netc->{DOMAINNAME} and return 1; write_resolv_conf("$prefix/etc/resolv.conf", $netc); my $name = gethostbyaddr(Socket::inet_aton($intf->{IPADDR}), AF_INET) or log::l("reverse name lookup failed"), return 0; log::l("reverse name lookup worked"); add2hash($netc, { HOSTNAME => $name }); 1; } sub addDefaultRoute { my ($netc) = @_; c::addDefaultRoute($netc->{GATEWAY}) if $netc->{GATEWAY}; } sub sethostname { my ($netc) = @_; syscall_('sethostname', $netc->{HOSTNAME}, length $netc->{HOSTNAME}) or log::l("sethostname failed: $!"); } sub resolv($) { my ($name) = @_; is_ip($name) and return $name; my $a = join(".", unpack "C4", (gethostbyname $name)[4]); #-log::l("resolved $name in $a"); $a; } sub dnsServers { my ($netc) = @_; my %used_dns; @used_dns{$netc->{dnsServer}, $netc->{dnsServer2}, $netc->{dnsServer3}} = (1, 2, 3); sort { $used_dns{$a} <=> $used_dns{$b} } grep { $_ } keys %used_dns; } sub findIntf { my ($intf, $device) = @_; $intf->{$device} ||= { DEVICE => $device }; } #PAD \s* a la fin my $ip_regexp = qr/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/; sub is_ip { my ($ip) = @_; return 0 unless $ip =~ $ip_regexp; my @fields = ($1, $2, $3, $4); foreach (@fields) { return 0 if $_ < 0 || $_ > 255; } return 1; } sub netmask { my ($ip) = @_; return "255.255.255.0" unless is_ip($ip); $ip =~ $ip_regexp; if ($1 >= 1 && $1 < 127) { return "255.0.0.0"; #-1.0.0.0 to 127.0.0.0 } elsif ($1 >= 128 && $1 <= 191 ){ return "255.255.0.0"; #-128.0.0.0 to 191.255.0.0 } elsif ($1 >= 192 && $1 <= 223) { return "255.255.255.0"; } else { return "255.255.255.255"; #-experimental classes } } sub masked_ip { my ($ip) = @_; return "" unless is_ip($ip); my @mask = netmask($ip) =~ $ip_regexp; my @ip = $ip =~ $ip_regexp; for (my $i = 0; $i < @ip; $i++) { $ip[$i] &= int $mask[$i]; } join(".", @ip); } sub dns { my ($ip) = @_; my $mask = masked_ip($ip); my @masked = masked_ip($ip) =~ $ip_regexp; $masked[3] = 2; join (".", @masked); } sub gateway { my ($ip) = @_; my @masked = masked_ip($ip) =~ $ip_regexp; $masked[3] = 1; join (".", @masked); } sub configureNetwork { my ($prefix, $netc, $in, $intf, $first_time) = @_; local $_; any::setup_thiskind($in, 'net', !$::expert, 1); my @l = detect_devices::getNet() or die _("no network card found"); my $last; foreach ($::beginner ? $l[0] : @l) { my $intf2 = findIntf($intf ||= {}, $_); add2hash($intf2, $last); add2hash($intf2, { NETMASK => '255.255.255.0' }); configureNetworkIntf($in, $intf2) or last; $netc ||= {}; $last = $intf2; } #- { #- my $wait = $o->wait_message(_("Hostname"), _("Determining host name and domain...")); #- network::guessHostname($o->{prefix}, $o->{netc}, $o->{intf}); #- } if ($last->{BOOTPROTO} =~ /^(dhcp|bootp)$/) { $in->ask_from_entries_ref(_("Configuring network"), _("Please enter your host name if you know it. Some DHCP servers require the hostname to work. Your host name should be a fully-qualified host name, such as ``mybox.mylab.myco.com''."), [_("Host name")], [ \$netc->{HOSTNAME} ]); } else { configureNetworkNet($in, $netc, $last ||= {}, @l); } miscellaneousNetwork($in); } sub configureNetworkIntf { my ($in, $intf) = @_; my $pump = $intf->{BOOTPROTO} =~ /^(dhcp|bootp)$/; delete $intf->{NETWORK}; delete $intf->{BROADCAST}; my @fields = qw(IPADDR NETMASK); $::isStandalone or $in->set_help('configureNetworkIP'); $in->ask_from_entries_ref(_("Configuring network device %s", $intf->{DEVICE}), ($::isStandalone ? '' : _("Configuring network device %s", $intf->{DEVICE}) . "\n\n") . _("Please enter the IP configuration for this machine. Each item should be entered as an IP address in dotted-decimal notation (for example, 1.2.3.4)."), [ _("IP address"), _("Netmask"), _("Automatic IP") ], [ \$intf->{IPADDR}, \$intf->{NETMASK}, { val => \$pump, type => "bool", text => _("(bootp/dhcp)") } ], complete => sub { $intf->{BOOTPROTO} = $pump ? "dhcp" : "static"; return 0 if $pump; for (my $i = 0; $i < @fields; $i++) { unless (is_ip($intf->{$fields[$i]})) { $in->ask_warn('', _("IP address should be in format 1.2.3.4")); return (1,$i); } return 0; } }, focus_out => sub { $intf->{NETMASK} ||= netmask($intf->{IPADDR}) unless $_[0] } ); } sub configureNetworkNet { my ($in, $netc, $intf, @devices) = @_; $netc->{dnsServer} ||= dns($intf->{IPADDR}); $netc->{GATEWAY} ||= gateway($intf->{IPADDR}); $in->ask_from_entries_refH(_("Configuring network"), _("Please enter your host name. Your host name should be a fully-qualified host name, such as ``mybox.mylab.myco.com''. You may also enter the IP address of the gateway if you have one"), [ _("Host name") => \$netc->{HOSTNAME}, _("DNS server") => \$netc->{dnsServer}, _("Gateway") => \$netc->{GATEWAY}, $::expert ? (_("Gateway device") => {val => \$netc->{GATEWAYDEV}, list => \@devices }) : (), ], ) or return; } sub miscellaneousNetwork { my ($in, $clicked) = @_; my $u = $::o->{miscellaneous} ||= {}; $::isStandalone or $in->set_help('configureNetworkProxy'); !$::beginner || $clicked and $in->ask_from_entries_ref('', _("Proxies configuration"), [ _("HTTP proxy"), _("FTP proxy"), ], [ \$u->{http_proxy}, \$u->{ftp_proxy}, ], complete => sub { $u->{http_proxy} =~ m,^($|http://), or $in->ask_warn('', _("Proxy should be http://...")), return 1,3; $u->{ftp_proxy} =~ m,^($|ftp://), or $in->ask_warn('', _("Proxy should be ftp://...")), return 1,4; 0; } ) || return; } sub read_all_conf { my ($prefix, $netc, $intf) = @_; $netc ||= {}; $intf ||= {}; add2hash($netc, read_conf("$prefix/etc/sysconfig/network")) if -r "$prefix/etc/sysconfig/network"; add2hash($netc, read_resolv_conf("$prefix/etc/resolv.conf")) if -r "$prefix/etc/resolv.conf"; foreach (all("$prefix/etc/sysconfig/network-scripts")) { if (/ifcfg-(\w+)/ && $1 ne 'lo' && $1 !~ /ppp/) { my $intf = findIntf($intf, $1); add2hash($intf, { getVarsFromSh("$prefix/etc/sysconfig/network-scripts/$_") }); } } } sub configureNetwork2 { my ($prefix, $netc, $intf, $install) = @_; my $etc = "$prefix/etc"; write_conf("$etc/sysconfig/network", $netc); write_resolv_conf("$etc/resolv.conf", $netc); write_interface_conf("$etc/sysconfig/network-scripts/ifcfg-$_->{DEVICE}", $_) foreach values %$intf; add2hosts("$etc/hosts", $netc->{HOSTNAME}, map { $_->{IPADDR} } values %$intf); sethostname($netc) unless $::testing; addDefaultRoute($netc) unless $::testing; grep { $_->{BOOTPROTO} =~ /^(dhcp)$/ } values %$intf and $install && $install->('dhcpcd'); grep { $_->{BOOTPROTO} =~ /^(pump|bootp)$/ } values %$intf and $install && $install->('pump'); #-res_init(); #- reinit the resolver so DNS changes take affect any::miscellaneousNetwork($prefix); } #-###################################################################################### #- Wonderful perl :( #-###################################################################################### 1;