package network::network; # $Id$wir #-###################################################################################### #- misc imports #-###################################################################################### use strict; use Socket; use common; use detect_devices; use run_program; use network::tools; use any; use vars qw(@ISA @EXPORT); use log; @ISA = qw(Exporter); @EXPORT = qw(add2hosts addDefaultRoute configureNetwork2 dns dnsServers findIntf gateway guessHostname is_ip is_ip_forbidden masked_ip netmask read_all_conf read_conf read_interface_conf read_resolv_conf resolv sethostname write_conf write_resolv_conf); #-###################################################################################### #- Functions #-###################################################################################### sub read_conf { my ($file) = @_; +{ getVarsFromSh($file) }; } sub read_resolv_conf_raw { my ($o_file) = @_; my $s = cat_($o_file || "$::prefix/etc/resolv.conf"); { nameserver => [ $s =~ /^\s*nameserver\s+(\S+)/mg ], search => [ if_($s =~ /^\s*search\s+(.*)/m, split(' ', $1)) ] }; } sub read_resolv_conf { my ($o_file) = @_; my $resolv_conf = read_resolv_conf_raw($o_file); +{ (mapn { $_[0] => $_[1] } [ qw(dnsServer dnsServer2 dnsServer3) ], $resolv_conf->{nameserver}), (mapn { $_[0] => $_[1] } [ qw(DOMAINNAME DOMAINNAME2 DOMAINNAME3) ], $resolv_conf->{search}), }; } sub read_interface_conf { my ($file) = @_; my %intf = getVarsFromSh($file); $intf{BOOTPROTO} ||= 'static'; $intf{isPtp} = $intf{NETWORK} eq '255.255.255.255'; $intf{isUp} = 1; \%intf; } sub read_dhcpd_conf { my ($o_file) = @_; my $s = cat_($o_file || "$::prefix/etc/dhcpd.conf"); { option_routers => [ $s =~ /^\s*option routers\s+(\S+);/mg ], subnet_mask => [ if_($s =~ /^\s*option subnet-mask\s+(.*);/mg, split(' ', $1)) ], domain_name => [ if_($s =~ /^\s*option domain-name\s+"(.*)";/mg, split(' ', $1)) ], domain_name_servers => [ if_($s =~ /^\s*option domain-name-servers\s+(.*);/m, split(' ', $1)) ], dynamic_bootp => [ if_($s =~ /^\s*range dynamic-bootp\s+\S+\.(\d+)\s+\S+\.(\d+)\s*;/m, split(' ', $1)) ], default_lease_time => [ if_($s =~ /^\s*default-lease-time\s+(.*);/m, split(' ', $1)) ], max_lease_time => [ if_($s =~ /^\s*max-lease-time\s+(.*);/m, split(' ', $1)) ] }; } sub read_squid_conf { my ($o_file) = @_; my $s = cat_($o_file || "$::prefix/etc/squid/squid.conf"); { http_port => [ $s =~ /^\s*http_port\s+(.*)/mg ], cache_size => [ if_($s =~ /^\s*cache_dir diskd\s+(.*)/mg, split(' ', $1)) ], admin_mail => [ if_($s =~ /^\s*err_html_text\s+(.*)/mg, split(' ', $1)) ] }; } sub read_tmdns_conf() { my $file = "$::prefix/etc/tmdns.conf"; cat_($file) =~ /^\s*hostname\s*=\s*(\w+)/m && { ZEROCONF_HOSTNAME => $1 }; } sub write_conf { my ($file, $netc) = @_; if ($netc->{HOSTNAME} && $netc->{HOSTNAME} =~ /\.(.+)$/) { $netc->{DOMAINNAME} = $1; } $netc->{NETWORKING} = 'yes'; setVarsInSh($file, $netc, qw(HOSTNAME NETWORKING GATEWAY GATEWAYDEV NISDOMAIN)); } sub write_zeroconf { my ($file, $zhostname) = @_; eval { substInFile { s/^\s*(hostname)\s*=.*/$1 = $zhostname/ } $file }; } sub write_resolv_conf { my ($file, $netc) = @_; my %new = ( search => [ grep { $_ } uniq(@$netc{'DOMAINNAME', 'DOMAINNAME2', 'DOMAINNAME3'}) ], nameserver => [ grep { $_ } uniq(@$netc{'dnsServer', 'dnsServer2', 'dnsServer3'}) ], ); my (%prev, @unknown); foreach (cat_($file)) { s/\s+$//; s/^[#\s]*//; if (my ($key, $val) = /^(search|nameserver)\s+(.*)$/) { push @{$prev{$key}}, $val; } elsif (/^ppp temp entry$/) { } elsif (/\S/) { push @unknown, $_; } } unlink $file if -l $file; #- workaround situation when /etc/resolv.conf is an absolute link to /etc/ppp/resolv.conf or whatever if (@{$new{search}} || @{$new{nameserver}}) { $prev{$_} = [ difference2($prev{$_} || [], $new{$_}) ] foreach keys %new; my @search = do { my @new = if_(@{$new{search}}, "search " . join(' ', @{$new{search}}) . "\n"); my @old = if_(@{$prev{search}}, "# search " . join(' ', @{$prev{search}}) . "\n"); @new, @old; }; my @nameserver = do { my @new = map { "nameserver $_\n" } @{$new{nameserver}}; my @old = map { "# nameserver $_\n" } @{$prev{nameserver}}; @new, @old; }; output_with_perm($file, 0644, @search, @nameserver, (map { "# $_\n" } @unknown), "\n# ppp temp entry\n"); #-res_init(); # reinit the resolver so DNS changes take affect 1; } else { log::explanations("neither domain name nor dns server are configured"); 0; } } sub write_interface_conf { my ($file, $intf, $_netc, $_prefix) = @_; my ($link_type, $mac_address) = `LC_ALL= LANG= $::prefix/sbin/ip -o link show $intf->{DEVICE} 2>/dev/null` =~ m|.*link/(\S+)\s([0-9a-z:]+)\s|; $intf->{HWADDR} &&= $mac_address; #- set HWADDR to MAC address if required #- write interface MAC address in iftab (if any) my $descriptor = $link_type eq 'ether' ? 'mac' : 'unspec'; substInFile { s/^$intf->{DEVICE}\s+.*\n//; $_ .= qq($intf->{DEVICE}\t$descriptor $mac_address\n) if eof } "$::prefix/etc/iftab" if $mac_address; 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::pcmcia_probe())), }); $intf->{BOOTPROTO} =~ s/dhcp.*/dhcp/; if (local $intf->{WIRELESS_ENC_KEY} = $intf->{WIRELESS_ENC_KEY}) { network::tools::convert_wep_key_for_iwconfig($intf->{WIRELESS_ENC_KEY}); } setVarsInSh($file, $intf, qw(DEVICE BOOTPROTO IPADDR NETMASK NETWORK BROADCAST ONBOOT HWADDR MII_NOT_SUPPORTED), qw(WIRELESS_MODE WIRELESS_ESSID WIRELESS_NWID WIRELESS_FREQ WIRELESS_SENS WIRELESS_RATE WIRELESS_ENC_KEY WIRELESS_RTS WIRELESS_FRAG WIRELESS_IWCONFIG WIRELESS_IWSPY WIRELESS_IWPRIV), if_($intf->{BOOTPROTO} eq "dhcp", qw(DHCP_HOSTNAME NEEDHOSTNAME)), if_($intf->{DEVICE} =~ /^ippp\d+$/, qw(DIAL_ON_IFUP)) ); log::explanations("written $intf->{DEVICE} interface configuration in $file"); } sub add2hosts { my ($file, $hostname, @ips) = @_; my %l = map { if_(/\s*(\S+)(.*)/, $1 => $2) } grep { !/\s+\Q$hostname\E\s*$/ } cat_($file); my $sub_hostname = $hostname =~ /(.*?)\./ ? " $1" : ''; $l{$_} = "\t\t$hostname$sub_hostname" foreach grep { $_ } @ips; log::explanations("writing host information to $file"); output($file, map { "$_$l{$_}\n" } keys %l); } # The interface/gateway needs to be configured before this will work! sub guessHostname { my ($_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}), Socket::AF_INET()) or log::explanations("reverse name lookup failed"), return 0; log::explanations("reverse name lookup worked"); add2hash($netc, { HOSTNAME => $name }); 1; } sub addDefaultRoute { my ($netc) = @_; c::addDefaultRoute($netc->{GATEWAY}) if $netc->{GATEWAY}; } sub sethostname { my ($netc) = @_; my $text; syscall_("sethostname", $netc->{HOSTNAME}, length $netc->{HOSTNAME}) ? ($text="set sethostname to $netc->{HOSTNAME}") : ($text="sethostname failed: $!"); log::explanations($text); } sub resolv($) { my ($name) = @_; is_ip($name) and return $name; my $a = join(".", unpack "C4", (gethostbyname $name)[4]); #-log::explanations("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; $intf->{$device}; } my $ip_regexp = qr/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/; sub is_ip { my ($ip) = @_; my @fields = $ip =~ $ip_regexp or return; every { 0 <= $_ && $_ <= 255 } @fields or return; @fields; } sub ip_compare { my ($ip1, $ip2) = @_; my (@ip1_fields) = $ip1 =~ $ip_regexp; my (@ip2_fields) = $ip2 =~ $ip_regexp; every { $ip1_fields[$_] eq $ip2_fields[$_] } (0 .. 3); } sub is_ip_forbidden { my ($ip) = @_; my @forbidden = ('127.0.0.1', '255.255.255.255'); any { ip_compare($ip, $_) } @forbidden; } sub is_domain_name { my ($name) = @_; my @fields = split /\./, $name; $name !~ /\.$/ && @fields > 0 && @fields == grep { /^[[:alnum:]](?:[\-[:alnum:]]{0,61}[[:alnum:]])?$/ } @fields; } sub netmask { my ($ip) = @_; return "255.255.255.0" unless is_ip($ip); $ip =~ $ip_regexp or warn "IP_regexp failed\n" and return "255.255.255.0"; if ($1 >= 1 && $1 < 127) { "255.0.0.0"; #-1.0.0.0 to 127.0.0.0 } elsif ($1 >= 128 && $1 <= 191) { "255.255.0.0"; #-128.0.0.0 to 191.255.0.0 } elsif ($1 >= 192 && $1 <= 223) { "255.255.255.0"; } else { "255.255.255.255"; #-experimental classes } } sub masked_ip { my ($ip) = @_; my @ip = is_ip($ip) or return ''; my @mask = netmask($ip) =~ $ip_regexp; for (my $i = 0; $i < @ip; $i++) { $ip[$i] &= int $mask[$i]; } join(".", @ip); } sub dns { my ($ip) = @_; my @masked = masked_ip($ip) =~ $ip_regexp; $masked[3] = 2; join(".", @masked); } sub gateway { my ($ip) = @_; my @masked = masked_ip($ip) =~ $ip_regexp; $masked[3] = 1; join(".", @masked); } sub miscellaneous_choose { my ($in, $u) = @_; $in->ask_from('', N("Proxies configuration"), [ { label => N("HTTP proxy"), val => \$u->{http_proxy} }, { label => N("FTP proxy"), val => \$u->{ftp_proxy} }, ], complete => sub { $u->{http_proxy} =~ m,^($|http://), or $in->ask_warn('', N("Proxy should be http://...")), return 1,0; $u->{ftp_proxy} =~ m,^($|ftp://|http://), or $in->ask_warn('', N("URL should begin with 'ftp:' or 'http:'")), return 1,1; 0; } ) or return; 1; } sub proxy_configure { my ($u) = @_; setExportedVarsInSh("$::prefix/etc/profile.d/proxy.sh", $u, qw(http_proxy ftp_proxy)); chmod 0755, "$::prefix/etc/profile.d/proxy.sh"; setExportedVarsInCsh("$::prefix/etc/profile.d/proxy.csh", $u, qw(http_proxy ftp_proxy)); chmod 0755, "$::prefix/etc/profile.d/proxy.csh"; } sub read_all_conf { my ($_prefix, $netc, $intf, $o_netcnx) = @_; $netc ||= {}; $intf ||= {}; my $netcnx = $o_netcnx || {}; add2hash($netc, read_conf("$::prefix/etc/sysconfig/network")) if -r "$::prefix/etc/sysconfig/network"; add2hash($netc, read_resolv_conf()); add2hash($netc, read_tmdns_conf()); foreach (all("$::prefix/etc/sysconfig/network-scripts")) { if (/^ifcfg-([A-Za-z0-9.:]+)$/ && $1 ne 'lo') { my $intf = findIntf($intf, $1); add2hash($intf, { getVarsFromSh("$::prefix/etc/sysconfig/network-scripts/$_") }); $intf->{WIRELESS_ENC_KEY} = network::tools::get_wep_key_from_iwconfig($intf->{WIRELESS_ENC_KEY}); } } $netcnx->{type} or probe_netcnx_type($::prefix, $netc, $intf, $netcnx); } sub probe_netcnx_type { my ($_prefix, $_netc, $intf, $netcnx) = @_; #- try to probe $netcnx->{type} which is used almost everywhere. unless ($netcnx->{type}) { #- ugly hack to determine network type (avoid saying not configured in summary). -e "$::prefix/etc/ppp/peers/adsl" and $netcnx->{type} ||= 'adsl'; # enough ? -e "$::prefix/etc/ppp/ioptions1B" || -e "$::prefix/etc/ppp/ioptions2B" and $netcnx->{type} ||= 'isdn'; # enough ? $intf->{ppp0} and $netcnx->{type} ||= 'modem'; $intf->{eth0} and $netcnx->{type} ||= 'lan'; } } sub easy_dhcp { my ($modules_conf, $netc, $intf) = @_; return if text2bool($netc->{NETWORKING}); require modules; require network::ethernet; modules::load_category($modules_conf, network::ethernet::get_eth_categories()); my @all_dev = sort map { $_->[0] } network::ethernet::get_eth_cards($modules_conf); #- only for a single ethernet network card my @ether_dev = grep { /^eth[0-9]+$/ && `LC_ALL= LANG= $::prefix/sbin/ip -o link show $_ 2>/dev/null` =~ m|\slink/ether\s| } @all_dev; @ether_dev == 1 or return; my $dhcp_intf = $ether_dev[0]; log::explanations("easy_dhcp: found $dhcp_intf"); put_in_hash($netc, { NETWORKING => "yes", DHCP => "yes", NET_DEVICE => $dhcp_intf, NET_INTERFACE => $dhcp_intf, }); $intf->{$dhcp_intf} ||= {}; put_in_hash($intf->{$dhcp_intf}, { DEVICE => $dhcp_intf, BOOTPROTO => 'dhcp', NETMASK => '255.255.255.0', ONBOOT => 'yes' }); 1; } #- configureNetwork2 : configure the network interfaces. #- input #- $prefix #- $netc #- $intf #- $netc input #- NETWORKING : networking flag : string : "yes" by default #- FORWARD_IPV4 : forward IP flag : string : "false" by default #- HOSTNAME : hostname : string : "localhost.localdomain" by default #- DOMAINNAME : domainname : string : $netc->{HOSTNAME} =~ /\.(.*)/ by default #- DOMAINNAME2 : well it's another domainname : have to look further why we used 2 #- The following are facultatives #- DHCP_HOSTNAME : If you have a dhcp and want to set the hostname #- GATEWAY : gateway #- GATEWAYDEV : gateway interface #- NISDOMAIN : nis domain #- $netc->{dnsServer} : dns server 1 #- $netc->{dnsServer2} : dns server 2 #- $netc->{dnsServer3} : dns server 3 : note that we uses the dns1 for the LAN, and the 2 others for the internet conx #- $intf input: for each $device (for example ethx) #- $intf->{$device}{IPADDR} : IP address #- $intf->{$device}{NETMASK} : netmask #- $intf->{$device}{DEVICE} : DEVICE = $device #- $intf->{$device}{BOOTPROTO} : boot prototype : "bootp" or "dhcp" or "pump" or ... sub configureNetwork2 { my ($in, $_prefix, $netc, $intf) = @_; my $etc = "$::prefix/etc"; if (!$::testing) { $netc->{wireless_eth} and $in->do_pkgs->ensure_binary_is_installed('wireless-tools', 'iwconfig', 'auto'); write_conf("$etc/sysconfig/network", $netc); write_resolv_conf("$etc/resolv.conf", $netc) if ! $netc->{DHCP}; write_interface_conf("$etc/sysconfig/network-scripts/ifcfg-$_->{DEVICE}", $_, $netc, $::prefix) foreach grep { $_->{DEVICE} ne 'ppp0' } values %$intf; add2hosts("$etc/hosts", $netc->{HOSTNAME}, map { $_->{IPADDR} } values %$intf) if $netc->{HOSTNAME} && !$netc->{DHCP}; add2hosts("$etc/hosts", "localhost", "127.0.0.1"); any { $_->{BOOTPROTO} eq "dhcp" } values %$intf and $in->do_pkgs->install($netc->{dhcp_client} || 'dhcp-client'); if ($netc->{ZEROCONF_HOSTNAME}) { $in->do_pkgs->ensure_binary_is_installed('tmdns', 'tmdns', 'auto') if !$in->do_pkgs->is_installed('bind'); $in->do_pkgs->ensure_binary_is_installed('zcip', 'zcip', 'auto'); write_zeroconf("$etc/tmdns.conf", $netc->{ZEROCONF_HOSTNAME}); } else { run_program::rooted($::prefix, "chkconfig", "--del", $_) foreach qw(tmdns zcip) } # disable zeroconf any { $_->{BOOTPROTO} =~ /^(pump|bootp)$/ } values %$intf and $in->do_pkgs->install('pump'); } } 1;