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index 45a3b29389495b436906048905a35af8769e0b53..6d7c808b512dd3794b70d8acc62c2b64f9b2d382 100755 (executable)
my $gotoHardwareChecksum;
my $gosa_si_client_fifo;
my %files_to_watch;
+my $servers_string;
$verbose= 1;
# globalise variables which are used in imported events
our $client_dnsname;
our $client_force_hostname;
our $server_key;
+our $opts_dnslookup;
+
+our $FIFO_FD = undef;
# default variables
our $REGISTERED = 0;
+our $REGISTRATION_IN_PROGRESS = 0;
+our $REGISTRATION_TRIES = 0;
+our $FAILED_CRYPTO = 0;
# path to fifo for non-gosa-si-client messages to gosa-si-server
$gosa_si_client_fifo = "/var/run/gosa-si-client.socket";
my $delay_set_time = 10;
our $prg= basename($0);
+# Threshold for the max number of wrong crypted packages, when triggered
+# a new server is choosen
+my $max_failed_crypto_messages = 5;
+
# all n seconds the client reports logged_in users to gosa-si-server
my $trigger_logged_in_users_report_delay = 600;
"force-hostname" => [\$client_force_hostname, "false"],
},
"server" => {
- "ip" => [\$server_ip, "127.0.0.1"],
+ "ip" => [\$servers_string, "127.0.0.1"],
"port" => [\$server_port, "20081"],
"key" => [\$server_key, ""],
"timeout" => [\$server_timeout, 10],
"key-lifetime" => [\$server_key_lifetime, 600],
+ "dns-lookup" => [\$opts_dnslookup, "true"],
},
);
}
}
+sub clean_shutdown
+{
+ unlink($pid_file) if (-w $pid_file);
+ unlink($gosa_si_client_fifo) if (-S $gosa_si_client_fifo);
+}
-sub sig_int_handler {
+sub sig_int_or_term_handler
+{
my ($signal) = @_;
-
- daemon_log("shutting down gosa-si-client", 1);
- system("kill `ps -C gosa-si-client -o pid=`");
+ daemon_log("Got SIG${signal} - shutting down gosa-si-client", 1);
+ clean_shutdown();
+ POE::Kernel->signal('client_session', 'KILL');
+ POE::Kernel->signal('gosa-si-client', 'KILL');
+ return 1;
}
-$SIG{INT} = \&sig_int_handler;
+sub sig_warn_handler
+{
+ my @loc = caller(0);
+ daemon_log( "SIGWARN line " . $loc[2] . ": " . $_[0], 1 );
+ return 1;
+}
+
+$SIG{'INT'} = \&sig_int_or_term_handler;
+$SIG{'TERM'} = \&sig_int_or_term_handler;
+$SIG{'__WARN__'} = \&sig_warn_handler;
+$SIG{'USR1'} = 'IGNORE';
+$SIG{'USR2'} = 'IGNORE';
#=== FUNCTION ================================================================
# NAME: logging
if ($REGISTERED == 1) {
$REGISTERED = 0; # if server is not available, cause reregistering
daemon_log("INFO: cause reregistering at gosa-si-server", 5);
- $global_kernel->yield('register_at_gosa_si_server');
+ sleep(2);
+ $global_kernel->post('client_session', 'register_at_gosa_si_server');
}
$error++;
#===============================================================================
sub register_at_gosa_si_server {
my ($kernel) = $_[KERNEL];
- my $try_to_register = 0;
-
+
# if client is already registered, stop registration process
if ($REGISTERED) {
$kernel->delay('register_at_gosa_si_server');
# client is not registered, start registration process
} else {
+ $REGISTRATION_IN_PROGRESS = 1;
+
# clear all other triggered events and wait till registration was successful
$kernel->delay('trigger_new_key');
my $events = join( ",", keys %{$event_hash} );
while(1) {
- $try_to_register++;
-
- # after one complete round through all server, stop trying to register
- if( $try_to_register > @servers ) { last; }
+ $REGISTRATION_TRIES++;
# fetch first gosa-si-server from @servers
# append shifted gosa-si-server at the end of @servers, so looking for servers never stop if
# a registration never occured
my $server = shift(@servers);
- push( @servers, $server );
+ &main::daemon_log("INFO: Trying to register with server $server", 3);
+ push(@servers, $server);
+ ($server_ip = $server) =~ s/:.*$//;
+ $server_address = $server;
# Check if our ip is resolvable - if not: don't try to register
if(!(defined($server) && $server =~ m/^[0-9\.]*?:.*$/)) {
&main::daemon_log("ERROR: Server with address '".defined($server)?$server:""."' is invalid!", 1);
- if (length(@servers) == 1) {
+ if (scalar(@servers) == 1) {
&main::daemon_log("ERROR: No valid servers found!", 1);
exit(1);
}
my $res = &send_msg_hash_to_target($register_hash, $server, $default_server_key);
# if delivery of registration msg succeed
- if($res eq "0") {
- # reset try_to_register
- $try_to_register = 0;
+ if(defined($res) and $res eq "0") {
# Set fixed client address and mac address
$client_ip= &get_local_ip_for_remote_ip(sprintf("%s", $server =~ /^([0-9\.]*?):.*$/));
last;
# delivery of registration msg failed
- } else {
- # wait 1 sec until trying to register again
- sleep(1);
- next;
+ } elsif($REGISTRATION_TRIES >= scalar(@servers)) {
+ last;
}
} # end of while
# one circle through all servers finished and no registration succeed
- if ( $try_to_register >= @servers ) {
+ if ( $REGISTRATION_TRIES >= (scalar(@servers)) ) {
+ $REGISTRATION_TRIES = 0;
&write_to_file("gosa-si-no-server-available", $fai_logpath);
- $kernel->delay_set('register_at_gosa_si_server', $delay_set_time);
+ daemon_log("WARNING: Could not register with any of the servers, waiting $delay_set_time seconds",3);
+ sleep($delay_set_time);
+ $kernel->post('client_session', 'register_at_gosa_si_server');
# delivery of registraion msg succeed, waiting for server response
} else {
my $msg_hash;
eval{
$msg = &decrypt_msg($crypted_msg, $module_key);
+ if ($msg !~ /^<xml>/i ) {
+ die 'could not decrypt message';
+ }
&main::daemon_log("decrypted_msg: \n$msg", 9);
$msg_hash = $xml->XMLin($msg, ForceArray=>1);
@logged_in_user_list = split(/\s/, $result);
}
- system("echo 'CURRENTLY_LOGGED_IN ".join(" ", @logged_in_user_list)."' > /var/run/gosa-si-client.socket");
+ $FIFO_FD = undef
+ if (! defined $FIFO_FD && ! defined open($FIFO_FD, '>', $gosa_si_client_fifo));
+ if (! defined $FIFO_FD) {
+ daemon_log("ERROR: unable to open fifo for writing: $!", 1);
+ $kernel->delay_set('trigger_logged_in_users_report', 30);
+ }
+ else {
+ print($FIFO_FD 'CURRENTLY_LOGGED_IN ' . join(" ", @logged_in_user_list));
$kernel->delay_set('trigger_logged_in_users_report', $trigger_logged_in_users_report_delay);
+ }
} else {
# try it in 10 sec again
$kernel->delay_set('trigger_logged_in_users_report', 10);
my $send_error = &send_msg_to_target($confirm_msg, $server_address, $server_key);
# Delete file
- if (not $send_error) {
- system("rm $goto_dir/$goto_file");
- }
+ unlink("$goto_dir/$goto_file")
+ if (! $send_error);
}
}
}
-sub sig_handler {
- my ($kernel, $signal) = @_[KERNEL, ARG0] ;
- daemon_log("0 INFO got signal '$signal'", 1);
- $kernel->sig_handled();
- return;
-}
-
-
sub _start {
my ($kernel, $heap) = @_[KERNEL, HEAP];
$kernel->alias_set('client_session');
$global_kernel = $kernel; # this is used to throw events at each point of the skript
- $kernel->sig(USR1 => "sig_handler");
-
# force a registration at a gosa-si-server
$kernel->yield('register_at_gosa_si_server');
}
+sub _stop {
+ my ($kernel, $session, $heap) = @_[KERNEL, SESSION, HEAP];
+ delete $heap->{'services'};
+ delete $heap->{'watchers'};
+ $kernel->alias_remove($heap->{alias});
+ $kernel->alarm_remove_all();
+ $kernel->post($heap->{child_session}, '_stop');
+ close( $FIFO_FD ) if( defined $FIFO_FD );
+}
+
+
sub _default {
daemon_log("ERROR: can not handle incoming msg with header '$_[ARG0]'", 1);
return;
my $remote_ip = $heap->{'remote_ip'},
my $error = 0;
my $answer;
+ my $msg;
+ my $msg_hash;
daemon_log("INFO: Incoming msg from '$remote_ip'", 5);
daemon_log("DEBUG: Incoming msg:\n$input\n", 9);
- my ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
+ if (not "$remote_ip" eq "$server_ip") {
+ daemon_log("INFO: Incoming msg not from server, ignoring", 5);
+ $error++;
+ } else {
+ ($msg, $msg_hash) = &check_key_and_xml_validity($input, $server_key);
if( (!$msg) || (!$msg_hash) ) {
daemon_log("WARNING: Deciphering of incoming msg failed", 3);
if($server_address =~ /$remote_ip/) {
# if client is alread in a registration process, that means not registered, do nothing
# if not, cause re-registration
- if (not $REGISTERED) {
+ if ($REGISTRATION_IN_PROGRESS) {
&daemon_log("WARNING: gosa-si-client is already in a registration process so ignore this message", 3);
} else {
+ if ($FAILED_CRYPTO > $max_failed_crypto_messages) {
+ # Force usage of a new server
+ daemon_log("Failed to decrypt a total of $max_failed_crypto_messages messages from the server. Trying to switch to another one", 3);
+ $REGISTRATION_TRIES = $max_failed_crypto_messages;
+ my $server = shift(@servers);
+ push(@servers, $server);
+ }
+ $FAILED_CRYPTO++;
$REGISTERED = 0;
+ sleep(2);
$kernel->post('client_session', 'register_at_gosa_si_server');
}
}
$error++;
}
-
+ }
######################
# process incoming msg
if( $error == 0 ) {
+ # Reset failed crypto messages state
+ $FAILED_CRYPTO = 0;
+
my $header = @{$msg_hash->{header}}[0];
my $source = @{$msg_hash->{source}}[0];
if( $answer =~ "<header>registered</header>") {
# set registered flag to true to stop sending further registered msgs
$REGISTERED = 1;
+ $REGISTRATION_IN_PROGRESS = 0;
}
else {
$answer =~ /<header>(\S+)<\/header>/;
return;
}
+sub find_servers {
+ # add gosa-si-server address from config file at first position of server list
+ my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
+
+ # Parse servers string
+ my @conf_servers = split(',', $servers_string);
+
+ # Now search for fallback servers in the configuration
+ foreach my $cur_server (@conf_servers) {
+ # Remove spaces from the IP
+ $cur_server =~ s/\s//g;
+
+ my $ip = $cur_server;
+ if(not $cur_server =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
+ my $ip_address = inet_ntoa(scalar gethostbyname($ip));
+ if(defined($ip_address) && $ip_address =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
+ # Write ip address to $server_ip variable
+ $ip = $ip_address;
+ }
+ }
+
+ my $server_addr = sprintf("%s:%s", $ip, $server_port);
+ if (not grep { $_ eq $server_addr } @servers) {
+ push(@servers, $server_addr);
+ }
+ }
+
+ my $servers_string = join(", ", @servers);
+ daemon_log("INFO: found servers in configuration file: $servers_string", 1);
+
+ # Last but not least search for fallback servers in the DNS
+ if (defined($opts_dnslookup) and $opts_dnslookup eq "true") {
+ my @tmp_servers;
+ if ( !$server_domain) {
+ # Try our DNS Searchlist
+ my @domain_list = &get_dns_domains();
+ my $tmp_domains;
+ my $error_string;
+ for my $domain (@domain_list) {
+ chomp($domain);
+ ($tmp_domains, $error_string) = &get_server_addresses($domain);
+ if(@$tmp_domains) {
+ for my $tmp_server(@$tmp_domains) {
+ push @tmp_servers, $tmp_server;
+ }
+ }
+ }
+
+ if (0 == @tmp_servers) {
+ daemon_log("INFO: No servers found in DNS.", 1);
+ }
+ else {
+ my $servers_string = join(", ", @tmp_servers);
+ daemon_log("INFO: found servers in DNS: $servers_string", 1);
+ }
+ } else {
+ @tmp_servers = &get_server_addresses($server_domain);
+ if( 0 == @tmp_servers ) {
+ daemon_log("INFO: No servers found in DNS for domain '$server_domain'",1);
+ }
+ }
+
+ if ( 0 != @tmp_servers ) {
+ foreach my $server_addr (@tmp_servers) {
+ if (not grep { $_ eq $server_addr } @servers) {
+ push(@servers, $server_addr);
+ }
+ }
+ }
+ }
+
+ if (0 == scalar(@servers)) {
+ daemon_log("ERROR: No servers found in the configuration or DNS.", 1);
+ exit(1);
+ }
+
+ # Define first server as server_ip
+ $server_ip = $servers[0];
+
+ # prepare variables
+ if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
+ if (defined $server_ip && defined $server_port) {
+ $server_address = $server_ip.":".$server_port;
+ }
+}
#==== MAIN = main ==============================================================
# parse commandline options
&read_configfile($cfg_file, %cfg_defaults);
&check_pid;
-
-# forward error messages to logfile
-if ( ! $foreground ) {
- open( STDIN, '+>/dev/null' );
- open( STDOUT, '+>&STDIN' );
- open( STDERR, '+>&STDIN' );
-}
-
-# Just fork, if we are not in foreground mode
-if( ! $foreground ) {
- chdir '/' or die "Can't chdir to /: $!";
- $pid = fork;
- setsid or die "Can't start a new session: $!";
- umask 0;
-} else {
- $pid = $$;
-}
-
-# Do something useful - put our PID into the pid_file
-if( 0 != $pid ) {
- open( LOCK_FILE, ">$pid_file" );
- print LOCK_FILE "$pid\n";
- close( LOCK_FILE );
- if( !$foreground ) {
- exit( 0 )
- };
-}
-
# parse head url and revision from svn
my $client_status_hash = { 'developmental'=>'revision', 'stable'=>'release'};
$client_version =~ /^\$HeadURL: (\S+) \$:\$Rev: (\d+) \$$/;
@@ -1158,6 +1277,52 @@ daemon_log("INFO: ".$client_status_hash->{$client_status}.": $client_revision",
# delete old DBsqlite lock files
system('rm -f /tmp/gosa_si_lock*gosa-si-client*');
+# (re-)create FIFO
+if (-e $gosa_si_client_fifo) {
+ daemon_log("INFO: $gosa_si_client_fifo exists - deleting", 5);
+ if (1 != unlink($gosa_si_client_fifo)) {
+ daemon_log("ERROR: unable to delete '$gosa_si_client_fifo': $!", 1);
+ exit( 1 );
+ }
+}
+if (! defined POSIX::mkfifo($gosa_si_client_fifo, "0600")) {
+ daemon_log("ERROR: failed creating fifo: $!", 1);
+ exit( 1 );
+}
+
+# Just fork, if we are not in foreground mode
+if( ! $foreground ) {
+ if (! chdir('/')) {
+ daemon_log("ERROR: Can't chdir to /: $!");
+ exit( 1 );
+ }
+ umask( 0 );
+ $pid = fork;
+} else {
+ $pid = $$;
+}
+
+if( 0 != $pid ) {
+ # Parent: put our PID into the $pid_file
+ open( LOCK_FILE, ">$pid_file" );
+ print LOCK_FILE "$pid\n";
+ close( LOCK_FILE );
+ if( !$foreground ) {
+ exit( 0 );
+ }
+}
+else {
+ # Child
+ open( STDIN, '+>/dev/null' );
+ open( STDOUT, '+>&STDIN' );
+ open( STDERR, '+>&STDIN' );
+ if (! POSIX::setsid()) {
+ deamon_log("ERROR: Can't start a new session: $!", 1);
+ exit( 1 );
+ }
+ $poe_kernel->has_forked() if ($poe_kernel->can('has_forked'));
+}
+
# detect ip and mac address and complete host address
$client_address = $client_ip.":".$client_port;
my $network_interface= &get_interface_for_ip($client_ip);
);
daemon_log("INFO: start socket for incoming xml messages at port '$client_port' ", 1);
-
-# prepare variables
-if( inet_aton($server_ip) ){ $server_ip = inet_ntoa(inet_aton($server_ip)); }
-if (defined $server_ip && defined $server_port) {
- $server_address = $server_ip.":".$server_port;
-}
$xml = new XML::Simple();
$default_server_key = $server_key;
-
-# add gosa-si-server address from config file at first position of server list
-my $server_check_cfg = Config::IniFiles->new( -file => $cfg_file );
-my $server_check = (defined($server_check_cfg))?$server_check_cfg->val( "server", "ip"):undef;
-if( defined $server_check ) {
- unshift(@servers, $server_address);
- my $servers_string = join(", ", @servers);
- daemon_log("INFO: found servers in configuration file: $servers_string", 1);
-} else {
- my @tmp_servers;
- if ( !$server_domain) {
- # Try our DNS Searchlist
- my @domain_list = &get_dns_domains();
- my $tmp_domains;
- my $error_string;
- for my $domain (@domain_list) {
- chomp($domain);
- ($tmp_domains, $error_string) = &get_server_addresses($domain);
- if(@$tmp_domains) {
- for my $tmp_server(@$tmp_domains) {
- push @tmp_servers, $tmp_server;
- }
- }
- }
- if (0 == @tmp_servers) {
- my $log_string = "no gosa-si-server found!";
- $log_string .= "\n\tdetermined domains out of /etc/resolv.conf: ".join(", ", @domain_list) if (@domain_list);
- $log_string .= "\n\tdetermined server addresses in domains: ".join(", ",@$tmp_domains) if (defined($tmp_domains));
- daemon_log("ERROR: $log_string", 1) if (defined($log_string));
- daemon_log("ERROR: $error_string", 1) if (defined($error_string));
- daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
- kill 2, $$;
- }
- } else {
- @tmp_servers = &get_server_addresses($server_domain);
- if( 0 == @tmp_servers ) {
- daemon_log("ERROR: no gosa-si-server found in DNS for domain '$server_domain'",1);
- daemon_log("ERROR: please specify a gosa-si-server address or a domain in config file", 1);
- kill 2, $$;
- }
- }
-
- foreach my $server (@tmp_servers) {
- unshift(@servers, $server);
- }
- my $servers_string = join(", ", @servers);
- daemon_log("INFO: found servers in DNS: $servers_string", 1);
-}
-
-
-# open fifo for non-gosa-si-client-msgs to gosa-si-server
-POSIX::mkfifo("$gosa_si_client_fifo", "0600");
-
+# Find servers from config and DNS
+&find_servers;
POE::Session->create(
inline_states => {
_start => \&_start,
+ _stop => \&_stop,
_default => \&_default,
- sig_handler => \&sig_handler,
register_at_gosa_si_server => \®ister_at_gosa_si_server,
# trigger periodical tasks