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diff --git a/branches/old/gosa-si/modules/ArpHandler.pm b/branches/old/gosa-si/modules/ArpHandler.pm
--- /dev/null
@@ -0,0 +1,450 @@
+package ArpHandler;
+
+use Exporter;
+@ISA = ("Exporter");
+
+use strict;
+use warnings;
+use GOSA::GosaSupportDaemon;
+use POSIX;
+use Fcntl;
+use Net::LDAP;
+use Net::LDAP::LDIF;
+use Net::LDAP::Entry;
+use Net::DNS;
+use Switch;
+use Data::Dumper;
+use Socket;
+
+# Don't start if some of the modules are missing
+my $start_service=1;
+my $lookup_vendor=1;
+BEGIN{
+ unless(eval('use Socket qw(PF_INET SOCK_DGRAM inet_ntoa sockaddr_in)')) {
+ $start_service=0;
+ }
+ unless(eval('use POE qw(Component::Pcap Component::ArpWatch)')) {
+ $start_service=0;
+ }
+ unless(eval('use Net::MAC::Vendor')) {
+ $lookup_vendor=0;
+ }
+}
+
+END{}
+
+my ($timeout, $mailto, $mailfrom, $user, $group);
+my ($arp_enabled, $arp_interface, $ldap_uri, $ldap_base, $ldap_admin_dn, $ldap_admin_password);
+my $hosts_database={};
+my $ldap;
+
+my %cfg_defaults =
+(
+ "ArpHandler" => {
+ "enabled" => [\$arp_enabled, "true"],
+ "interface" => [\$arp_interface, "all"],
+ },
+ "server" => {
+ "ldap-uri" => [\$ldap_uri, ""],
+ "ldap-base" => [\$ldap_base, ""],
+ "ldap-admin-dn" => [\$ldap_admin_dn, ""],
+ "ldap-admin-password" => [\$ldap_admin_password, ""],
+ },
+);
+
+#=== FUNCTION ================================================================
+# NAME: read_configfile
+# PARAMETERS: cfg_file - string -
+# RETURNS: nothing
+# DESCRIPTION: read cfg_file and set variables
+#===============================================================================
+sub local_read_configfile {
+ my $cfg;
+ if( defined( $main::cfg_file) && ( (-s $main::cfg_file) > 0 )) {
+ if( -r $main::cfg_file ) {
+ $cfg = Config::IniFiles->new( -file => $main::cfg_file );
+ } else {
+ print STDERR "Couldn't read config file!";
+ }
+ } else {
+ $cfg = Config::IniFiles->new() ;
+ }
+ foreach my $section (keys %cfg_defaults) {
+ foreach my $param (keys %{$cfg_defaults{ $section }}) {
+ my $pinfo = $cfg_defaults{ $section }{ $param };
+ ${@$pinfo[0]} = $cfg->val( $section, $param, @$pinfo[1] );
+ }
+ }
+}
+
+sub get_module_info {
+ my @info = (undef,
+ undef,
+ );
+
+ &local_read_configfile();
+ # Don't start if some of the modules are missing
+ if(($arp_enabled eq 'true') && $start_service) {
+ if($lookup_vendor) {
+ eval("Net::MAC::Vendor::load_cache('file:///usr/lib/gosa-si/modules/oui.txt')");
+ if($@) {
+ &main::daemon_log("Loading OUI cache file failed! MAC Vendor lookup disabled", 1);
+ $lookup_vendor=0;
+ } else {
+ &main::daemon_log("Loading OUI cache file suceeded!", 6);
+ }
+ }
+ my $ldap_handle = &main::get_ldap_handle();
+
+ # When interface is not configured (or 'all'), start arpwatch on all possible interfaces
+ if ((!defined($arp_interface)) || $arp_interface eq 'all') {
+ foreach my $device(&get_interfaces) {
+ # TODO: Need a better workaround for IPv4-to-IPv6 bridges
+ if($device =~ m/^sit\d+$/) {
+ next;
+ }
+
+ # If device has a valid mac address
+ # TODO: Check if this should be the right way
+ if(not(&get_mac($device) eq "00:00:00:00:00:00")) {
+ &main::daemon_log("Starting ArpWatch on $device", 1);
+ POE::Session->create(
+ inline_states => {
+ _start => sub {
+ &start(@_,$device);
+ },
+ _stop => sub {
+ $_[KERNEL]->post( sprintf("arp_watch_$device") => 'shutdown' )
+ },
+ got_packet => \&got_packet,
+ },
+ );
+ }
+ }
+ } else {
+ foreach my $device(split(/[\s,]+/, $arp_interface)) {
+ &main::daemon_log("Starting ArpWatch on $device", 1);
+ POE::Session->create(
+ inline_states => {
+ _start => sub {
+ &start(@_,$device);
+ },
+ _stop => sub {
+ $_[KERNEL]->post( sprintf("arp_watch_$device") => 'shutdown' )
+ },
+ got_packet => \&got_packet,
+ },
+ );
+ }
+ }
+ } else {
+ &main::daemon_log("ArpHandler disabled. Not starting any capture processes");
+ }
+ return \@info;
+}
+
+sub process_incoming_msg {
+ return 1;
+}
+
+sub start {
+ my $device = (exists($_[ARG0])?$_[ARG0]:'eth0');
+ POE::Component::ArpWatch->spawn(
+ Alias => sprintf("arp_watch_$device"),
+ Device => $device,
+ Dispatch => 'got_packet',
+ Session => $_[SESSION],
+ );
+
+ $_[KERNEL]->post( sprintf("arp_watch_$device") => 'run' );
+}
+
+sub got_packet {
+ my ($kernel, $heap, $sender, $packet) = @_[KERNEL, HEAP, SENDER, ARG0];
+
+ if( $packet->{source_haddr} eq "00:00:00:00:00:00" ||
+ $packet->{source_haddr} eq "ff:ff:ff:ff:ff:ff" ||
+ $packet->{source_ipaddr} eq "0.0.0.0") {
+ return;
+ }
+
+ my $capture_device = sprintf "%s", $kernel->alias_list($sender) =~ /^arp_watch_(.*)$/;
+
+ my $ldap_handle = &main::get_ldap_handle();
+ if(!exists($hosts_database->{$packet->{source_haddr}})) {
+ my $dnsname= gethostbyaddr(inet_aton($packet->{source_ipaddr}), AF_INET) || $packet->{source_ipaddr};
+ my $ldap_result=&get_host_from_ldap($packet->{source_haddr});
+ if(exists($ldap_result->{dn})) {
+ $hosts_database->{$packet->{source_haddr}}=$ldap_result;
+ $hosts_database->{$packet->{source_haddr}}->{dnsname}= $dnsname;
+ if(!exists($ldap_result->{ipHostNumber})) {
+ $hosts_database->{$packet->{source_haddr}}->{ipHostNumber}=$packet->{source_ipaddr};
+ } else {
+ if(!($ldap_result->{ipHostNumber} eq $packet->{source_ipaddr})) {
+ &main::daemon_log(
+ "Current IP Address ".$packet->{source_ipaddr}.
+ " of host ".$hosts_database->{$packet->{source_haddr}}->{dnsname}.
+ " differs from LDAP (".$ldap_result->{ipHostNumber}.")", 4);
+ }
+ }
+ $hosts_database->{$packet->{source_haddr}}->{dnsname}=$dnsname;
+ &main::daemon_log("Host was found in LDAP as ".$ldap_result->{dn}, 8);
+ } else {
+ $hosts_database->{$packet->{source_haddr}}={
+ macAddress => $packet->{source_haddr},
+ ipHostNumber => $packet->{source_ipaddr},
+ dnsname => $dnsname,
+ cn => (($dnsname =~ /^(\d){1,3}\.(\d){1,3}\.(\d){1,3}\.(\d){1,3}/) ? $dnsname : sprintf "%s", $dnsname =~ /([^\.]+)\./),
+ macVendor => (($lookup_vendor) ? &get_vendor_for_mac($packet->{source_haddr}) : "Unknown Vendor"),
+ };
+ &main::daemon_log("Host was not found in LDAP (".($hosts_database->{$packet->{source_haddr}}->{dnsname}).")",6);
+ &main::daemon_log(
+ "New Host ".($hosts_database->{$packet->{source_haddr}}->{dnsname}).
+ ": ".$hosts_database->{$packet->{source_haddr}}->{ipHostNumber}.
+ "/".$hosts_database->{$packet->{source_haddr}}->{macAddress},4);
+ &add_ldap_entry(
+ $ldap_handle,
+ $ldap_base,
+ $hosts_database->{$packet->{source_haddr}}->{macAddress},
+ 'new-system',
+ $hosts_database->{$packet->{source_haddr}}->{ipHostNumber},
+ 'interface',
+ $hosts_database->{$packet->{source_haddr}}->{macVendor});
+ }
+ $hosts_database->{$packet->{source_haddr}}->{device}= $capture_device;
+ } else {
+ if(!($hosts_database->{$packet->{source_haddr}}->{ipHostNumber} eq $packet->{source_ipaddr})) {
+ &main::daemon_log(
+ "IP Address change of MAC ".$packet->{source_haddr}.
+ ": ".$hosts_database->{$packet->{source_haddr}}->{ipHostNumber}.
+ "->".$packet->{source_ipaddr}, 4);
+ $hosts_database->{$packet->{source_haddr}}->{ipHostNumber}= $packet->{source_ipaddr};
+ &change_ldap_entry(
+ $ldap_handle,
+ $ldap_base,
+ $hosts_database->{$packet->{source_haddr}}->{macAddress},
+ 'ip-changed',
+ $hosts_database->{$packet->{source_haddr}}->{ipHostNumber},
+ );
+
+ }
+ &main::daemon_log("Host already in cache (".($hosts_database->{$packet->{source_haddr}}->{device})."->".($hosts_database->{$packet->{source_haddr}}->{dnsname}).")",8);
+ }
+}
+
+sub get_host_from_ldap {
+ my $mac=shift;
+ my $result={};
+
+ my $ldap_handle = &main::get_ldap_handle();
+ if(defined($ldap_handle)) {
+ my $ldap_result= &search_ldap_entry(
+ $ldap_handle,
+ $ldap_base,
+ "(|(macAddress=$mac)(dhcpHWAddress=ethernet $mac))"
+ );
+
+ if(defined($ldap_result) && $ldap_result->count==1) {
+ if(exists($ldap_result->{entries}[0]) &&
+ exists($ldap_result->{entries}[0]->{asn}->{objectName}) &&
+ exists($ldap_result->{entries}[0]->{asn}->{attributes})) {
+
+ for my $attribute(@{$ldap_result->{entries}[0]->{asn}->{attributes}}) {
+ if($attribute->{type} eq 'cn') {
+ $result->{cn} = $attribute->{vals}[0];
+ }
+ if($attribute->{type} eq 'macAddress') {
+ $result->{macAddress} = $attribute->{vals}[0];
+ }
+ if($attribute->{type} eq 'dhcpHWAddress') {
+ $result->{dhcpHWAddress} = $attribute->{vals}[0];
+ }
+ if($attribute->{type} eq 'ipHostNumber') {
+ $result->{ipHostNumber} = $attribute->{vals}[0];
+ }
+ }
+ }
+ $result->{dn} = $ldap_result->{entries}[0]->{asn}->{objectName};
+ }
+ }
+
+ return $result;
+}
+
+
+#=== FUNCTION ================================================================
+# NAME: get_mac
+# PARAMETERS: interface name (i.e. eth0)
+# RETURNS: (mac address)
+# DESCRIPTION: Uses ioctl to get mac address directly from system.
+#===============================================================================
+sub get_mac {
+ my $ifreq= shift;
+ my $result;
+ if ($ifreq && length($ifreq) > 0) {
+ if($ifreq eq "all") {
+ $result = "00:00:00:00:00:00";
+ } else {
+ my $SIOCGIFHWADDR= 0x8927; # man 2 ioctl_list
+
+ socket SOCKET, PF_INET, SOCK_DGRAM, getprotobyname('ip')
+ or die "socket: $!";
+
+ if(ioctl SOCKET, $SIOCGIFHWADDR, $ifreq) {
+ my ($if, $mac)= unpack 'h36 H12', $ifreq;
+
+ if (length($mac) > 0) {
+ $mac=~ m/^([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$/;
+ $mac= sprintf("%s:%s:%s:%s:%s:%s", $1, $2, $3, $4, $5, $6);
+ $result = $mac;
+ }
+ }
+ }
+ }
+ return $result;
+}
+
+sub get_vendor_for_mac {
+ my $mac=shift;
+ my $result="Unknown Vendor";
+
+ if(defined($mac)) {
+ my $vendor= Net::MAC::Vendor::fetch_oui_from_cache(Net::MAC::Vendor::normalize_mac($mac));
+ if(length($vendor) > 0) {
+ $result= @{$vendor}[0];
+ }
+ &main::daemon_log("Looking up Vendor for MAC ".$mac.": $result", 4);
+ }
+
+ return $result;
+}
+
+#=== FUNCTION ================================================================
+# NAME: add_ldap_entry
+# PURPOSE: adds an element to ldap-tree
+# PARAMETERS:
+# RETURNS: none
+# DESCRIPTION: ????
+# THROWS: no exceptions
+# COMMENTS: none
+# SEE ALSO: n/a/bin
+#===============================================================================
+sub add_ldap_entry {
+ my ($ldap_tree, $ldap_base, $mac, $gotoSysStatus, $ip, $interface, $desc) = @_;
+ if(defined($ldap_tree)) {
+ my $dn = "cn=".$hosts_database->{$mac}->{cn}.",ou=incoming,$ldap_base";
+ my $s_res = &search_ldap_entry($ldap_tree, $ldap_base, "(|(macAddress=$mac)(dhcpHWAddress=ethernet $mac))");
+ my $c_res = (defined($s_res))?$s_res->count:0;
+ if($c_res == 1) {
+ &main::daemon_log("WARNING: macAddress $mac already in LDAP", 1);
+ return;
+ } elsif($c_res > 0) {
+ &main::daemon_log("ERROR: macAddress $mac exists $c_res times in LDAP", 1);
+ return;
+ }
+
+ # create LDAP entry
+ my $entry = Net::LDAP::Entry->new( $dn );
+ $entry->dn($dn);
+ $entry->add("objectClass" => "GOhard");
+ $entry->add("cn" => $hosts_database->{$mac}->{cn});
+ $entry->add("macAddress" => $mac);
+ if(defined $gotoSysStatus) {$entry->add("gotoSysStatus" => $gotoSysStatus)}
+ if(defined $ip) {$entry->add("ipHostNumber" => $ip) }
+ #if(defined $interface) { }
+ if(defined $desc) {$entry->add("description" => $desc) }
+
+ # submit entry to LDAP
+ my $result = $entry->update ($ldap_tree);
+
+ # for $result->code constants please look at Net::LDAP::Constant
+ if($result->code == 68) { # entry already exists
+ &main::daemon_log("WARNING: $dn ".$result->error, 3);
+ } elsif($result->code == 0) { # everything went fine
+ &main::daemon_log("add entry $dn to ldap", 1);
+ } else { # if any other error occur
+ &main::daemon_log("ERROR: $dn, ".$result->code.", ".$result->error, 1);
+ }
+ } else {
+ &main::daemon_log("Not adding new Entry: LDAP disabled", 6);
+ }
+ return;
+}
+
+
+#=== FUNCTION ================================================================
+# NAME: change_ldap_entry
+# PURPOSE: ????
+# PARAMETERS: ????
+# RETURNS: ????
+# DESCRIPTION: ????
+# THROWS: no exceptions
+# COMMENTS: none
+# SEE ALSO: n/a
+#===============================================================================
+sub change_ldap_entry {
+ my ($ldap_tree, $ldap_base, $mac, $gotoSysStatus, $ip) = @_;
+
+ if(defined($ldap_tree)) {
+ # check if ldap_entry exists or not
+ my $s_res = &search_ldap_entry($ldap_tree, $ldap_base, "(|(macAddress=$mac)(dhcpHWAddress=ethernet $mac))");
+ my $c_res = (defined $s_res)?$s_res->count:0;
+ if($c_res == 0) {
+ &main::daemon_log("WARNING: macAddress $mac not in LDAP", 1);
+ return;
+ } elsif($c_res > 1) {
+ &main::daemon_log("ERROR: macAddress $mac exists $c_res times in LDAP", 1);
+ return;
+ }
+
+ my $s_res_entry = $s_res->pop_entry();
+ my $dn = $s_res_entry->dn();
+ my $replace = {
+ 'gotoSysStatus' => $gotoSysStatus,
+ };
+ if (defined($ip)) {
+ $replace->{'ipHostNumber'} = $ip;
+ }
+ my $result = $ldap_tree->modify( $dn, replace => $replace );
+
+ # for $result->code constants please look at Net::LDAP::Constant
+ if($result->code == 32) { # entry doesnt exists
+ &add_ldap_entry($mac, $gotoSysStatus);
+ } elsif($result->code == 0) { # everything went fine
+ &main::daemon_log("entry $dn changed successful", 1);
+ } else { # if any other error occur
+ &main::daemon_log("ERROR: $dn, ".$result->code.", ".$result->error, 1);
+ }
+ } else {
+ &main::daemon_log("Not changing Entry: LDAP disabled", 6);
+ }
+
+ return;
+}
+
+#=== FUNCTION ================================================================
+# NAME: search_ldap_entry
+# PURPOSE: ????
+# PARAMETERS: [Net::LDAP] $ldap_tree - object of an ldap-tree
+# string $sub_tree - dn of the subtree the search is performed
+# string $search_string - either a string or a Net::LDAP::Filter object
+# RETURNS: [Net::LDAP::Search] $msg - result object of the performed search
+# DESCRIPTION: ????
+# THROWS: no exceptions
+# COMMENTS: none
+# SEE ALSO: n/a
+#===============================================================================
+sub search_ldap_entry {
+ my ($ldap_tree, $sub_tree, $search_string) = @_;
+ my $msg;
+ if(defined($ldap_tree)) {
+ $msg = $ldap_tree->search( # perform a search
+ base => $sub_tree,
+ filter => $search_string,
+ ) or &main::daemon_log("cannot perform search at ldap: $@", 1);
+ }
+ return $msg;
+}
+
+# vim:ts=4:shiftwidth:expandtab
+1;