From 2dd021d433166d3c38a1cf41c3bcba25d54d8248 Mon Sep 17 00:00:00 2001 From: rettenbe Date: Mon, 3 Sep 2007 07:06:05 +0000 Subject: [PATCH] daemon for gosa git-svn-id: https://oss.gonicus.de/repositories/gosa/trunk@7190 594d385d-05f5-0310-b6e9-bd551577e9d8 --- contrib/daemon/gosa-support-daemon.pl | 513 ++++++++++++++++++++++++++ 1 file changed, 513 insertions(+) create mode 100644 contrib/daemon/gosa-support-daemon.pl diff --git a/contrib/daemon/gosa-support-daemon.pl b/contrib/daemon/gosa-support-daemon.pl new file mode 100644 index 000000000..ac7c3947f --- /dev/null +++ b/contrib/daemon/gosa-support-daemon.pl @@ -0,0 +1,513 @@ +#!/usr/bin/perl +#=============================================================================== +# +# FILE: gosa-support-daemon.pl +# +# USAGE: ./.gosa-support-daemon.pl +# +# DESCRIPTION: +# +# OPTIONS: --- +# REQUIREMENTS: --- +# BUGS: --- +# NOTES: --- +# AUTHOR: Andreas Rettenberger, +# COMPANY: Gonicus GmbH, Arnsberg +# VERSION: 1.0 +# CREATED: 21.08.2007 15:13:51 CEST +# REVISION: --- +#=============================================================================== + + # :TODO:31.08.2007:: was hat es mit dem "gotoSysStatus: $1" auf sich, was ist + # das und wie muss ich es einbauen? Siehe Skript gosa-dhcp-monitor Zeile 131. + # Dort hat es den Wert der IP-Adresse, in meinem Test-LDAP finde ich aber + # gotoSysStatus nicht + + # :TODO:31.08.2007:: zu welchem Attribut im LDAP entry soll das Interface + # geschrieben werden? Siehe Funktion add_ldap_entry + + # :TODO:31.08.2007:: basename beim erzeugen von neuen entries noch + # base64-codieren, bei add_ldap_entry und change_ldap_entry, klären mit cajus + # ist das überhaupt notwendig??? + + # :TODO:31.08.2007:: könnte es sein, dass das Interface gar kein eigener Wert + # ist, sondern zur description gehört??? + + +use strict; +use warnings; +use Getopt::Long; +use Config::IniFiles; +use POSIX; +use Fcntl; +use Net::LDAP; +use Net::LDAP::LDIF; +use Net::LDAP::Entry; +use Switch; +use MIME::Base64; + + + +my ($verbose, $cfg_file, $log_file, $pid_file, $foreground); +my ($timeout, $mailto, $mailfrom, $user, $group); +my ($procid, $pid, $loglevel); +my ($fifo_path, $max_process_timeout, $max_process ); +my %daemon_children; +my ($ldap, $bind_phrase, $password, $ldap_base) ; + +$procid = -1 ; +$foreground = 0 ; +$verbose = 0 ; +$max_process = 1 ; +$max_process_timeout = 1 ; +$ldap_base = "dc=gonicus,dc=de" ; + +#--------------------------------------------------------------------------- +# parse commandline options +#--------------------------------------------------------------------------- +Getopt::Long::Configure( "bundling" ); +GetOptions( "v|verbose+" => \$verbose, + "c|config=s" => \$cfg_file, + "h|help" => \&usage, + "l|logfile=s" => \$log_file, + "p|pid=s" => \$pid_file, + "f|foreground" => \$foreground); + +#--------------------------------------------------------------------------- +# read and set config parameters +#--------------------------------------------------------------------------- +my %cfg_defaults = +("Allgemein" => + {"timeout" => [ \$timeout, 1000 ], + "mailto" => [ \$mailto, 'root@localhost' ], + "mailfrom" => [ \$mailfrom, 'sps-daemon@localhost' ], + "user" => [ \$user, "nobody" ], + "group" => [ \$group, "nogroup" ], + "fifo_path" => [ \$fifo_path, "/home/rettenbe/gonicus/gosa-support/tmp/fifo" ], + "log_file" => [ \$log_file, "/home/rettenbe/gonicus/gosa-support/tmp/gosa-support.log" ], + "pid_file" => [ \$pid_file, "/home/rettenbe/gonicus/gosa-support/tmp/gosa-support.pid" ], + "loglevel" => [ \$loglevel, 1] + }, +"LDAP" => + {"bind" => [ \$bind_phrase, "cn=ldapadmin,dc=gonicus,dc=de" ], + "password" => [ \$password, "tester" ], + } + ); +&read_configfile; + + +#=== FUNCTION ================================================================ +# NAME: check_cmdline_param +# PURPOSE: checks all commandline parameters to validity +# PARAMETERS: none +# RETURNS: none +# DESCRIPTION: ???? +# THROWS: no exceptions +# COMMENTS: none +# SEE ALSO: n/a +#=============================================================================== +sub check_cmdline_param () { + my $err_config; + my $err_log; + my $err_pid; + my $err_counter = 0; + if( not defined( $cfg_file)) { + $err_config = "please specify a config file"; + $err_counter += 1; + } + if( not defined( $log_file)) { + $err_log = "please specify a log file"; + $err_counter += 1; + } + if( not defined( $pid_file)) { + $err_pid = "please specify a pid file"; + $err_counter += 1; + } + if( $err_counter > 0 ) { + &usage( "", 1 ); + if( defined( $err_config)) { print STDERR "$err_config\n"} + if( defined( $err_log)) { print STDERR "$err_log\n" } + if( defined( $err_pid)) { print STDERR "$err_pid\n"} + print STDERR "\n"; + exit( -1 ); + } +} + +#=== FUNCTION ================================================================ +# NAME: check_pid +# PURPOSE: +# PARAMETERS: none +# RETURNS: none +# DESCRIPTION: ???? +# THROWS: no exceptions +# COMMENTS: none +# SEE ALSO: n/a +#=============================================================================== +sub check_pid { + if( open( LOCK_FILE, "<$pid_file") ) { + $procid = ; + if( defined $procid ) { + chomp( $procid ); + if( -f "/proc/$procid/stat" ) { + my($stat) = `cat /proc/$procid/stat` =~ m/$procid \((.+)\).*/; + print "\t".$stat."\n"; + if( "sps-daemon.pl" eq $stat ) { + close( LOCK_FILE ); + exit -1; + } + } + } + close( LOCK_FILE ); + unlink( $pid_file ); + } + + # Try to open PID file + if (!sysopen(LOCK_FILE, $pid_file, O_WRONLY|O_CREAT|O_EXCL, 0644)) { + my($msg) = "Couldn't obtain lockfile '$pid_file' "; + if (open(LOCK_FILE, "<", $pid_file) && ($pid = )) { + chomp($pid); + $msg .= "(PID $pid)\n"; + } else { + $msg .= "(unable to read PID)\n"; + } + if ( ! $foreground ) { + daemon_log( $msg."\n"); + } else { + print( STDERR " $msg " ); + } + exit( -1 ); + } +} + +#=== FUNCTION ================================================================ +# NAME: read_configfile +# PURPOSE: read the configuration file and provide the programm with +# parameters +# PARAMETERS: none +# RETURNS: none +# DESCRIPTION: ???? +# THROWS: no exceptions +# COMMENTS: none +# SEE ALSO: n/a +#=============================================================================== +sub read_configfile { + my $log_time = localtime(time); + my $cfg; + if( defined( $cfg_file) && ( length($cfg_file) > 0 )) { + if( -r $cfg_file ) { + $cfg = Config::IniFiles->new( -file => $cfg_file ); + } else { usage( "Couldn't read config file: $cfg_file \n" ); } + } else { $cfg = Config::IniFiles->new() ; } + + foreach my $section (keys %cfg_defaults) { # "Parse" config into values + foreach my $param (keys %{$cfg_defaults{ $section }}) { + my $pinfo = $cfg_defaults{ $section }{ $param }; + ${@$pinfo[ 0 ]} = $cfg->val( $section, $param, @$pinfo[ 1 ] ); + } + } + #daemon_log("$log_time: config file read\n"); +} + +#=== FUNCTION ================================================================ +# NAME: daemon_log +# PURPOSE: log messages to specified logfile +# PARAMETERS: $msg, $level +# RETURNS: ???? +# DESCRIPTION: Takes a message ($msg) and append it to the logfile. The +# standard log-level ($level) is 1. Messages whith higher level +# than the verbosity-level (defined by commandline) are printed +# out to commandline. Messages with log-level lower than 2 are +# not logged to logfile! +# THROWS: no exceptions +# COMMENTS: none +# SEE ALSO: n/a +#=============================================================================== +sub daemon_log { + my( $msg, $level ) = @_; + if(not defined $msg) { return } + if(not defined $level) { $level = 1 } + open(LOG_HANDLE, ">>$log_file"); + if(not defined open( LOG_HANDLE, ">>$log_file" ) ) { return } + chomp($msg); + if( $verbose >= $level ) { print "$msg"."\n" } + if( $level <= 1 ) { print LOG_HANDLE $msg."\n" } + close( LOG_HANDLE ); + } + +#=== FUNCTION ================================================================ +# NAME: signal handler +# PURPOSE: catches signals from the programm and do diffrent things +# than default +# PARAMETERS: none +# RETURNS: none +# DESCRIPTION: sighandler +# THROWS: no exceptions +# COMMENTS: none +# SEE ALSO: n/a +#=============================================================================== +sub sigINT { + my $log_time = localtime(time); + print "INT\n"; + if( -p $fifo_path ) { + close FIFO ; + unlink($fifo_path) ; + daemon_log( "$log_time: FIFO closed after signal INT!\n") ; + } + if(defined($ldap)) { + $ldap->unbind; + } + $SIG{INT} = "DEFAULT" ; + kill INT => $$ ; +} +$SIG{INT} = \&sigINT ; + +#=== FUNCTION ================================================================ +# NAME: usage +# PURPOSE: +# PARAMETERS: none +# RETURNS: none +# DESCRIPTION: print out the usage of the program +# THROWS: no exceptions +# COMMENTS: none +# SEE ALSO: n/a +#=============================================================================== +sub usage { + my( $text, $help ) = @_; + $text = undef if( "h" eq $text ); + (defined $text) && print STDERR "\n$text\n"; + if( (defined $help && $help) || (!defined $help && !defined $text) ) { + print STDERR << "EOF" ; +usage: $0 [-hvf] [-c config, -l logfile, -p pidfile] + + -h : this (help) message + -c : config file + -l : log file (example: /var/log/sps/sps.log) + -p : pid file (example: /var/run/sps/sps.pid) + -f : foreground (don"t fork) + -v : be verbose (multiple to increase verbosity) +EOF + } + print "\n" ; +} + + +#=== FUNCTION ================================================================ +# NAME: open_fifo +# PURPOSE: +# PARAMETERS: $fifo_path +# RETURNS: 0: FIFO couldn"t be setup, 1: FIFO setup correctly +# DESCRIPTION: creates a FIFO at $fifo_path +# THROWS: no exceptions +# COMMENTS: none +# SEE ALSO: n/a +#=============================================================================== +sub open_fifo { + my ($fifo_path) = @_ ; + my $log_time = localtime( time ); + if( -p $fifo_path ) { + daemon_log("$log_time: FIFO at $fifo_path already exists\n"); + return 0; + } + POSIX::mkfifo($fifo_path, 0666) or die "can't mkfifo $fifo_path: $!"; + daemon_log( "$log_time: FIFO started at $fifo_path\n" ) ; + return 1; + } + + +#=== 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 +#=============================================================================== +sub add_ldap_entry { + my( $mac, $gotoSysStatus, $ip, $interface, $desc ) = @_; + #my $dn = encode_base64("cn=$mac,ou=incoming,$ldap_base", ""); + my $dn = "cn=$mac,ou=incoming,$ldap_base"; + + # create LDAP entry + my $entry = Net::LDAP::Entry->new( $dn ); + $entry->dn($dn); + $entry->add("objectClass" => "goHard"); + $entry->add("cn" => $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 ); + + # for $result->code constants please look at Net::LDAP::Constant + my $log_time = localtime( time ); + if($result->code == 68) { # entry already exists + daemon_log("WARNING: $log_time: $dn ".$result->error, 3); + } elsif($result->code == 0) { # everything went fine + daemon_log("$log_time: add entry $dn to ldap", 1); + } else { # if any other error occur + daemon_log("ERROR: $log_time: $dn, ".$result->code.", ".$result->error, 1); + } + return; +} + + +#=== FUNCTION ================================================================ +# NAME: change_ldap_entry +# PURPOSE: ???? +# PARAMETERS: ???? +# RETURNS: ???? +# DESCRIPTION: ???? +# THROWS: no exceptions +# COMMENTS: none +# SEE ALSO: n/a +#=============================================================================== +sub change_ldap_entry { + my ($mac, $gotoSysStatus ) = @_; + #my $dn = encode_base64("cn=$mac,ou=incoming,$ldap_base", ""); + my $dn = "cn=$mac,ou=incoming,$ldap_base"; + my $result = $ldap->modify( $dn, replace => {'gotoSysStatus' => $gotoSysStatus } ); + + # for $result->code constants please look at Net::LDAP::Constant + my $log_time = localtime( time ); + if($result->code == 32) { # entry doesnt exists + &add_ldap_entry($mac, $gotoSysStatus); + } elsif($result->code == 0) { # everything went fine + daemon_log("$log_time: entry $dn changed successful", 1); + } else { # if any other error occur + daemon_log("ERROR: $log_time: $dn, ".$result->code.", ".$result->error, 1); + } + + return; +} +# check wether entry exists + # if multiple time + # raise error + # if true + # change attr of entry + # if false + # add entry to ldap (invoke add_ldap_entry) + # + + +#========= MAIN = main ======================================================== +daemon_log( "####### START DAEMON ######\n", 1 ); +#&check_cmdline_param ; +&check_pid; +&open_fifo($fifo_path); + +# Just fork, if we"re not in foreground mode +if( ! $foreground ) { $pid = fork(); } +else { $pid = $$; } + +# Do something useful - put our PID into the pid_file +if( 0 != $pid ) { + open( LOCK_FILE, ">$pid_file" ); + print LOCK_FILE "$pid\n"; + close( LOCK_FILE ); + if( !$foreground ) { exit( 0 ) }; +} + + +if( not -p $fifo_path ) { die "fifo file disappeared\n" } +sysopen(FIFO, $fifo_path, O_RDONLY) or die "can't read from $fifo_path: $!" ; + +while( 1 ) { + # wenn FIFO nicht offen, dann öffne ihn + + # checke alle prozesse im hash daemon_children ob sie noch aktiv sind, wenn + # nicht, dann entferne prozess aus hash + while( (my $key, my $val) = each( %daemon_children) ) { + my $status = waitpid( $key, &WNOHANG) ; + if( $status == -1 ) { + delete $daemon_children{$key} ; + daemon_log("childprocess finished: $key", 3) ; + } + } + + # ist die max_process anzahl von prozesskindern erreicht, dann warte und + # prüfe erneut, ob in der zwischenzeit prozesse fertig geworden sind + if( keys( %daemon_children ) >= $max_process ) { + sleep($max_process_timeout) ; + next ; + } + + my $msg = ; + if( not defined( $msg )) { next ; } + + chomp( $msg ); + if( length( $msg ) == 0 ) { next ; } + + my $forked_pid = fork(); +#=== PARENT = parent ========================================================== + if ( $forked_pid != 0 ) { + daemon_log("childprocess forked: $forked_pid", 3) ; + $daemon_children{$forked_pid} = 0 ; + } +#=== CHILD = child ============================================================ + else { + # parse the incoming message from arp, split the message and return + # the values in an array. not defined values are set to "none" + #my ($mac, $ip, $interface, $arp_sig, $desc) = &parse_input( $msg ) ; + daemon_log( "childprocess read from arp: $fifo_path\nline: $msg", 3); + my ($mac, $ip, $interface, $arp_sig, $desc) = split('\s', $msg, 5); + + # create connection to LDAP + $ldap = Net::LDAP->new( "localhost" ) or die "$@"; + $ldap->bind($bind_phrase, + password => $password, + ) ; + + switch($arp_sig) { + case 0 {&change_ldap_entry($mac, "ip-changed")} + case 1 {&change_ldap_entry($mac, "mac-not-whitelisted")} + case 2 {&change_ldap_entry($mac, "mac-in-blacklist")} + case 3 {&add_ldap_entry($mac, "new-mac-address", $ip, $interface, + $desc )} + case 4 {&change_ldap_entry($mac, "unauthorized-arp-request")} + case 5 {&change_ldap_entry($mac, "abusive-number-of-arp-requests")} + case 6 {&change_ldap_entry($mac, "ether-and-arp-mac-differs")} + case 7 {&change_ldap_entry($mac, "flood-detected")} + case 8 {&add_ldap_entry($mac, $ip, "new-system")} + case 9 {&change_ldap_entry($mac, "mac-changed")} + } + + + # ldap search +# my $base_phrase = "dc=gonicus,dc=de"; +# my $filter_phrase = "cn=keinesorge"; +# my $attrs_phrase = "cn macAdress"; +# my $msg_search = $ldap->search( base => $base_phrase, +# filter => $filter_phrase, +# attrs => $attrs_phrase, +# ); +# $msg_search->code && die $msg_search->error; +# +# my @entries = $msg_search->entries; +# my $max = $msg_search->count; +# print "anzahl der entries: $max\n"; +# my $i; +# for ( $i = 0 ; $i < $max ; $i++ ) { +# my $entry = $msg_search->entry ( $i ); +# foreach my $attr ( $entry->attributes ) { +# if( not $attr eq "cn") { +# next; +# } +# print join( "\n ", $attr, $entry->get_value( $attr ) ), "\n\n"; +# } +# } + + # ldap add + + + sleep( 1 ) ; + $ldap->unbind; + exit; + } + +} + + -- 2.30.2