gosa support daemon

- Diese und die folgenden Zeilen werden ignoriert --

AM   daemon/gosa-sd

git-svn-id: https://oss.gonicus.de/repositories/gosa/trunk@7267 594d385d-05f5-0310-b6e9-bd551577e9d8

diff --git a/contrib/daemon/gosa-sd b/contrib/daemon/gosa-sd
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+++ b/contrib/daemon/gosa-sd
@@ -0,0 +1,566 @@
+#!/usr/bin/perl 
+#===============================================================================
+#
+#         FILE:  gosa-support-daemon.pl
+#
+#        USAGE:  ./.gosa-support-daemon.pl
+#
+#  DESCRIPTION:  
+#
+#      OPTIONS:  ---
+# REQUIREMENTS:  ---
+#         BUGS:  ---
+#        NOTES:  ---
+#       AUTHOR:   Andreas Rettenberger, <rettenberger@gonicus.de>
+#      COMPANY:  Gonicus GmbH, Arnsberg
+#      VERSION:  1.0
+#      CREATED:  21.08.2007 15:13:51 CEST
+#     REVISION:  ---
+#===============================================================================
+
+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;
+
+
+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 ;
+$ldap_base = "dc=gonicus,dc=de" ;
+#$ldap_path = "/var/run/gosa-support-daemon.socket";
+#$log_path = "/var/log/gosa-support-daemon.log";
+#$pid_path = "/var/run/gosa-support-daemon/gosa-support-daemon.pid";
+
+#---------------------------------------------------------------------------
+#  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 = <LOCK_FILE>;
+        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 = <LOCK_FILE>)) {
+            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 ] );
+        }
+    }
+
+    if(-e $log_file ) { unlink $log_file }
+    daemon_log("$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 <file> : config file
+    -l <file> : log file (example: /var/log/sps/sps.log)
+    -p <file> : 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 ($ldap_tree, $ldap_base, $mac, $gotoSysStatus, $ip, $interface, $desc) = @_;
+    my $dn = "cn=$mac,ou=incoming,$ldap_base";
+
+    my $s_res = &search_ldap_entry($ldap_tree, $ldap_base, "(macAddress=$mac)");
+    my $c_res = $s_res->count;
+    if($c_res == 1) {
+        daemon_log("WARNING: macAddress $mac already in LDAP", 1);
+        return;
+    } elsif($c_res > 0) {
+        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" => $mac);
+    $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
+    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 ($ldap_tree, $ldap_base, $mac, $gotoSysStatus ) = @_;
+    
+    # check if ldap_entry exists or not
+    my $s_res = &search_ldap_entry($ldap_tree, $ldap_base, "(macAddress=$mac)");
+    my $c_res = $s_res->count;
+    if($c_res == 0) {
+        daemon_log("WARNING: macAddress $mac not in LDAP", 1);
+        return;
+    } elsif($c_res > 1) {
+        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 $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;
+}
+
+#===  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 = $ldap_tree->search( # perform a search
+                        base   => $sub_tree,
+                        filter => $search_string,
+                      ) or daemon_log("cannot perform search at ldap: $@", 1);
+#    if(defined $msg) {
+#        print $sub_tree."\t".$search_string."\t";
+#        print $msg->count."\n";
+#        foreach my $entry ($msg->entries) { $entry->dump; };
+#    }
+
+    return $msg;
+}
+
+
+
+#========= 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 = <FIFO>;
+    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($ldap, $ldap_base, 
+                                      $mac, "ip-changed",
+                                      )} 
+            case 1 {&change_ldap_entry($ldap, $ldap_base, 
+                                      $mac, "mac-not-whitelisted",
+                                      )}
+            case 2 {&change_ldap_entry($ldap, $ldap_base, 
+                                      $mac, "mac-in-blacklist",
+                                      )}
+            case 3 {&add_ldap_entry($ldap, $ldap_base, 
+                                   $mac, "new-mac-address", $ip, 
+                                   $interface, $desc, 
+                                   )}
+            case 4 {&change_ldap_entry($ldap, $ldap_base, 
+                                      $mac, "unauthorized-arp-request",
+                                      )}
+            case 5 {&change_ldap_entry($ldap, $ldap_base, 
+                                      $mac, "abusive-number-of-arp-requests",
+                                      )}
+            case 6 {&change_ldap_entry($ldap, $ldap_base, 
+                                      $mac, "ether-and-arp-mac-differs",
+                                      )}
+            case 7 {&change_ldap_entry($ldap, $ldap_base, 
+                                      $mac, "flood-detected",
+                                      )}
+            case 8 {&add_ldap_entry($ldap, $ldap_base, 
+                                   $mac, $ip, "new-system",
+                                   )}
+            case 9 {&change_ldap_entry($ldap, $ldap_base, 
+                                      $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;
+    }
+
+}
+
+