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93_Log2Syslog.pm: version 2.5.1 TLS security, minor fixes
git-svn-id: https://svn.fhem.de/fhem/trunk/fhem@14958 2b470e98-0d58-463d-a4d8-8e2adae1ed80
This commit is contained in:
nasseeder1
parent
a07d36a945
commit
22df2093c9
@ -22,13 +22,17 @@
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# along with fhem. If not, see <http://www.gnu.org/licenses/>.
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#
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# The module based on idea and input from betateilchen 92_rsyslog.pm
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#
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# Implements the Syslog Protocol of RFC 5424 https://tools.ietf.org/html/rfc5424
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# and RFC 3164 https://tools.ietf.org/html/rfc3164
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# and RFC 3164 https://tools.ietf.org/html/rfc3164 and
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# TLS Transport according to RFC5425 https://tools.ietf.org/pdf/rfc5425.pdf as well
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#
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#######################################################################################################
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# Versions History:
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#
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# 2.4.1 21.08.2017 changes in sub charfilter, change PROCID to $hash->{HELPER}{SEQ}
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# 2.5.1 24.08.2017 some fixes
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# 2.5.0 23.08.2017 TLS encryption available, new readings, $readingFnAttributes
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# 2.4.1 21.08.2017 changes in sub charfilter, change PROCID to $hash->{SEQNO}
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# switch to non-blocking in subs event/fhem_log
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# 2.4.0 20.08.2017 new sub Log3Syslog for entries in local fhemlog only -> verbose support
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# 2.3.1 19.08.2017 commandref revised
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@ -54,7 +58,7 @@ eval "use Net::Domain qw(hostfqdn);1" or my $MissModulNDom = "Net::Domain";
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#
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sub Log3Syslog($$$);
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my $Log2SyslogVn = "2.4.1";
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my $Log2SyslogVn = "2.5.1";
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# Mappinghash BSD-Formatierung Monat
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my %Log2Syslog_BSDMonth = (
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@ -95,8 +99,11 @@ sub Log2Syslog_Initialize($) {
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"disable:1,0 ".
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"addTimestamp:0,1 ".
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"logFormat:BSD,IETF ".
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"TLS:1,0 ".
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"timeout ".
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"type:UDP,TCP ".
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"port "
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"port ".
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$readingFnAttributes
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;
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return undef;
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}
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@ -136,11 +143,20 @@ sub Log2Syslog_Define($@) {
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$hash->{PEERHOST} = $a[2]; # Destination Host (Syslog Server)
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$hash->{MYHOST} = hostfqdn (); # FQDN eigener Host
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$hash->{HELPER}{SEQ} = 1; # PROCID in IETF, wird kontinuierlich hochgezählt
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$hash->{SEQNO} = 1; # PROCID in IETF, wird kontinuierlich hochgezählt
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$hash->{VERSION} = $Log2SyslogVn;
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$logInform{$hash->{NAME}} = "fhem_log"; # Funktion die in hash %loginform für $name eingetragen wird
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$hash->{HELPER}{SSLVER} = "n.a."; # Initialisierung
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$hash->{HELPER}{SSLALGO} = "n.a."; # Initialisierung
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$hash->{HELPER}{LTIME} = time(); # Init Timestmp f. Ratenbestimmung
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$hash->{HELPER}{OLDSEQNO} = $hash->{SEQNO}; # Init Sequenznummer f. Ratenbestimmung
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readingsSingleUpdate($hash, "state", "initialized", 1);
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readingsBeginUpdate($hash);
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readingsBulkUpdate($hash, "SSL_Version", "n.a.");
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readingsBulkUpdate($hash, "SSL_Algorithm", "n.a.");
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readingsBulkUpdate($hash, "Transfered_logs_per_minute", 0);
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readingsBulkUpdate($hash, "state", "initialized");
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readingsEndUpdate($hash,1);
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return undef;
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}
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@ -176,7 +192,20 @@ sub Log2Syslog_Attr {
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readingsSingleUpdate($hash, "state", $val, 1);
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}
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if ($cmd eq "set" && $aName eq "port") {
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if ($aName eq "TLS") {
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if($cmd eq "set") {
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$do = ($aVal) ? 1 : 0;
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}
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$do = 0 if($cmd eq "del");
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if ($do == 0) {
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$hash->{HELPER}{SSLVER} = "n.a.";
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$hash->{HELPER}{SSLALGO} = "n.a.";
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readingsSingleUpdate($hash, "SSL_Version", "n.a.", 1);
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readingsSingleUpdate($hash, "SSL_Algorithm", "n.a.", 1);
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}
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}
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if ($cmd eq "set" && $aName =~ /port|timeout/) {
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if($aVal !~ m/^\d+$/) { return " The Value of \"$aName\" is not valid. Use only figures !";}
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}
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@ -191,7 +220,7 @@ sub event_log($$) {
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my ($hash,$dev) = @_;
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my $name = $hash->{NAME};
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my $rex = $hash->{HELPER}{EVNTLOG};
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my ($prival,$sock);
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my ($prival,$sock,$data,$pid);
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return if(IsDisabled($name) || !$rex);
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my $events = deviceEvents($dev, AttrVal($name, "addStateEvent", 0));
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@ -204,9 +233,7 @@ sub event_log($$) {
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$sock = setsock($hash);
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if($sock) {
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$sock->blocking(0);
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if(defined($sock)) {
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for (my $i = 0; $i < $max; $i++) {
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my $txt = $events->[$i];
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$txt = "" if(!defined($txt));
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@ -219,23 +246,29 @@ sub event_log($$) {
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my $otp = "$n $txt";
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$otp = "$tim $otp" if AttrVal($name,'addTimestamp',0);
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$prival = setprival($txt);
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my $data = setpayload($hash,$prival,$date,$time,$otp,"event");
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($data,$pid) = setpayload($hash,$prival,$date,$time,$otp,"event");
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next if(!$data);
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my $ret = syswrite $sock, $data."\n";
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if($ret <= 0) {
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my $err = $!;
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readingsSingleUpdate($hash, "state", "write error: $err", 1) if($err ne OldValue($name));
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if($ret && $ret > 0) {
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trate($hash);
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Log3Syslog($name, 4, "$name - Payload sequence $pid sent\n");
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} else {
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Log3Syslog($name, 4, "$name - Payload sequence $hash->{HELPER}{SEQ} sent");
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my $err = $!;
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Log3Syslog($name, 4, "$name - Warning - Payload sequence $pid NOT sent: $err\n");
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readingsSingleUpdate($hash, "state", "write error: $err", 1) if($err ne OldValue($name));
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}
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$hash->{HELPER}{SEQ}++;
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}
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}
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if(AttrVal($name, "TLS", 0)) {
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shutdown($sock, 1);
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$sock->close(SSL_no_shutdown => 1);
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} else {
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$sock->close();
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}
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}
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return "";
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}
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@ -247,7 +280,7 @@ sub fhem_log($$) {
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my ($name,$raw) = @_;
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my $hash = $defs{$name};
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my $rex = $hash->{HELPER}{FHEMLOG};
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my ($prival,$sock);
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my ($prival,$sock,$err,$ret,$data,$pid);
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return if(IsDisabled($name) || !$rex);
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@ -260,21 +293,30 @@ sub fhem_log($$) {
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my $otp = "$vbose: $txt";
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$otp = "$tim $otp" if AttrVal($name,'addTimestamp',0);
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$prival = setprival($txt,$vbose);
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my $data = setpayload($hash,$prival,$date,$time,$otp,"fhem");
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($data,$pid) = setpayload($hash,$prival,$date,$time,$otp,"fhem");
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return if(!$data);
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$sock = setsock($hash);
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if ($sock) {
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$sock->blocking(0);
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my $ret = syswrite $sock, $data."\n";
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if($ret <= 0) {
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my $err = $!;
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readingsSingleUpdate($hash, "state", "write error: $err", 1);
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if (defined($sock)) {
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$ret = syswrite $sock, $data."\n" if($data);
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if($ret && $ret > 0) {
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trate($hash);
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Log3Syslog($name, 4, "$name - Payload sequence $pid sent\n");
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} else {
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Log3Syslog($name, 4, "$name - Payload sequence $hash->{HELPER}{SEQ} sent");
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my $err = $!;
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Log3Syslog($name, 4, "$name - Warning - Payload sequence $pid NOT sent: $err\n");
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readingsSingleUpdate($hash, "state", "write error: $err", 1) if($err ne OldValue($name));
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}
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if(AttrVal($name, "TLS", 0)) {
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shutdown($sock, 1);
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$sock->close(SSL_no_shutdown => 1);
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} else {
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shutdown($sock, 1);
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$sock->close();
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$hash->{HELPER}{SEQ}++;
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}
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}
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}
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@ -322,21 +364,74 @@ sub setsock ($) {
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my ($hash) = @_;
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my $name = $hash->{NAME};
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my $host = $hash->{PEERHOST};
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my $port = AttrVal($name, "port", 514);
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my $port = AttrVal($name, "TLS", 0)?AttrVal($name, "port", 6514):AttrVal($name, "port", 514);
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my $type = lc(AttrVal($name, "type", "udp"));
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my $st = "active";
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my $timeout = AttrVal($name, "timeout", 0.5);
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my ($sock,$lo,$sslver,$sslalgo);
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# Create Socket and check if successful
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my $sock = new IO::Socket::INET (PeerHost => $host, PeerPort => $port, Proto => $type, Timeout => 4 );
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if(AttrVal($name, "TLS", 0)) {
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# TLS gesicherte Verbindung
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# TLS Transport nach RFC5425 https://tools.ietf.org/pdf/rfc5425.pdf
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$attr{$name}{type} = "TCP" if(AttrVal($name, "type", "UDP") ne "TCP");
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$sslver = "n.a.";
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$sslalgo = "n.a.";
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eval "use IO::Socket::SSL";
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if($@) {
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$st = "$@";
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} else {
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$sock = IO::Socket::INET->new(PeerHost => $host, PeerPort => $port, Proto => 'tcp', Blocking => 0);
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if (!$sock) {
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$st = "unable open socket for $host, $type, $port";
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} else {
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$sock->blocking(1);
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eval { IO::Socket::SSL->start_SSL($sock,
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SSL_verify_mode => "SSL_VERIFY_PEER",
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SSL_version => "TLSv12",
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SSL_hostname => $host,
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SSL_veriycn_scheme => "rfc5425",
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SSL_veriycn_publicsuffix => '',
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Timeout => $timeout
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) || undef $sock; };
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if (!$sock) {
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undef $sock;
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$st = "SSL error: ".IO::Socket::SSL::errstr();
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} else {
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$sslver = $sock->get_sslversion();
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$sslalgo = $sock->get_fingerprint();
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$sslalgo = (split("\\\$",$sslalgo))[0];
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$lo = "Socket opened for Host: $host, Protocol: $type, Port: $port, TLS: 0";
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}
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}
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}
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} else {
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# erstellt ungesicherte Socket Verbindung
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$sslver = "n.a.";
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$sslalgo = "n.a.";
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$sock = new IO::Socket::INET (PeerHost => $host, PeerPort => $port, Proto => $type, Timeout => $timeout );
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if (!$sock) {
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$st = "unable for open socket for $host, $type, $port";
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readingsSingleUpdate($hash, "state", $st, 1) if($st ne OldValue($name));
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undef $sock;
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$st = "unable open socket for $host, $type, $port";
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} else {
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$sock->blocking(0);
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# Logausgabe (nur in das fhem Logfile !)
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$st = "Socket opened for Host: $host, Protocol: $type, Port: $port, TLS: ".AttrVal($name, 'TLS', 0);
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Log3Syslog($name, 5, "$name - $st");
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$lo = "Socket opened for Host: $host, Protocol: $type, Port: $port, TLS: 0";
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}
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}
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readingsSingleUpdate($hash, "state", $st, 1) if($st ne OldValue($name));
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if($sslver ne $hash->{HELPER}{SSLVER}) {
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readingsSingleUpdate($hash, "SSL_Version", $sslver, 1);
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$hash->{HELPER}{SSLVER} = $sslver;
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}
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if($sslalgo ne $hash->{HELPER}{SSLALGO}) {
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readingsSingleUpdate($hash, "SSL_Algorithm", $sslalgo, 1);
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$hash->{HELPER}{SSLALGO} = $sslalgo;
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}
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Log3Syslog($name, 5, "$name - $lo") if($lo);
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return($sock);
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}
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@ -394,23 +489,26 @@ sub setpayload ($$$$$$) {
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my $lf = AttrVal($name, "logFormat", "IETF");
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my $data;
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return undef,undef if(!$otp);
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my $pid = $hash->{SEQNO}; # PayloadID zur Nachverfolgung der Eventabfolge
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$hash->{SEQNO}++;
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my ($year,$month,$day) = split("-",$date);
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if ($lf eq "BSD") {
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# BSD Protokollformat https://tools.ietf.org/html/rfc3164
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$time = (split(".",$time))[0]; # msec ist nicht erlaubt
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$time = (split(".",$time))[0] if($time =~ m/\./); # msec ist nicht erlaubt
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$month = $Log2Syslog_BSDMonth{$month}; # Monatsmapping, z.B. 01 -> Jan
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$day =~ s/0/ / if($day =~ m/^0.*$/); # in Tagen < 10 muss 0 durch Space ersetzt werden
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$ident = substr($ident,0, $RFC3164len{TAG}); # Länge TAG Feld begrenzen
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no warnings 'uninitialized';
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$data = "<$prival>$month $day $time $myhost TAG$ident: $otp";
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$data = "<$prival>$month $day $time $myhost $ident: : $otp";
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use warnings;
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$data = substr($data,0, $RFC3164len{DL}); # Länge Total begrenzen
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}
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if ($lf eq "IETF") {
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# IETF Protokollformat https://tools.ietf.org/html/rfc5424
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my $pid = $hash->{HELPER}{SEQ};
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my $mid = "FHEM"; # message ID, identify type of message, e.g. for firewall filter
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my $tim = $date."T".$time;
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no warnings 'uninitialized';
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@ -418,11 +516,20 @@ sub setpayload ($$$$$$) {
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use warnings;
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}
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my $dl = length($data);
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my $ldat = ($dl>130)?(substr($data,0, 130)." ..."):$data;
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Log3Syslog($name, 4, "$name - Payload sequence $hash->{HELPER}{SEQ} created:\n$ldat");
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if($data=~/\s$/){$data=~s/\s$//;}
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my $dl = length($data)+1; # Länge muss ! für TLS stimmen, sonst keine Ausgabe !
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return($data);
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# wenn Transport Layer Security (TLS) -> Transport Mapping for Syslog https://tools.ietf.org/pdf/rfc5425.pdf
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if(AttrVal($name, "TLS", 0)) {
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$data = "$dl $data";
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$data = substr($data,0, $RFC5425len{DL}); # Länge Total begrenzen
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Log3Syslog($name, 4, "$name - SSL-Payload created with length: ".(($dl>$RFC5425len{DL})?$RFC5425len{DL}:$dl) );
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}
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my $ldat = ($dl>130)?(substr($data,0, 130)." ..."):$data;
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Log3Syslog($name, 4, "$name - Payload sequence $pid created:\n$ldat");
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return($data,$pid);
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}
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###############################################################################
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@ -464,6 +571,27 @@ sub Log3Syslog($$$) {
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return undef;
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}
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###############################################################################
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# Bestimmung Übertragungsrate
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###############################################################################
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sub trate($) {
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my ($hash) = @_;
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if ($hash->{HELPER}{LTIME}+60 <= time()) {
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my $div = (time()-$hash->{HELPER}{LTIME})/60;
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my $spm = sprintf "%.0f", ($hash->{SEQNO} - $hash->{HELPER}{OLDSEQNO})/$div;
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$hash->{HELPER}{OLDSEQNO} = $hash->{SEQNO};
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$hash->{HELPER}{LTIME} = time();
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my $ospm = ReadingsVal($hash->{NAME}, "Transfered_logs_per_minute", 0);
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if($spm != $ospm) {
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readingsSingleUpdate($hash, "Transfered_logs_per_minute", $spm, 1);
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}
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}
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return;
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}
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1;
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=pod
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@ -476,7 +604,11 @@ return undef;
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<a name="Log2Syslog"></a>
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<h3>Log2Syslog</h3>
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<ul>
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Send FHEM system log entries and/or FHEM events to an external syslog server. <br><br>
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Send FHEM system log entries and/or FHEM events to an external syslog server. <br>
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The syslog protocol has been implemented according the specifications of <a href="https://tools.ietf.org/html/rfc5424"> RFC5424 (IETF)</a>,
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<a href="https://tools.ietf.org/html/rfc3164"> RFC3164 (BSD)</a> and the TLS transport protocol according the
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<a href="https://tools.ietf.org/pdf/rfc5425.pdf"> RFC5425</a>. <br>
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<br>
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<b>Prerequisits</b>
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<ul>
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@ -536,8 +668,9 @@ Aug 18 21:06:45 fhemtest.myds.me 1 2017-08-18T21:06:45 fhemtest.myds.me Test_eve
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Aug 18 21:08:27 fhemtest.myds.me 1 2017-08-18T21:08:27.760 fhemtest.myds.me Test_fhem 13339 FHEM - : 4: CamTER - Informations of camera Terrasse retrieved
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Aug 18 21:08:27 fhemtest.myds.me 1 2017-08-18T21:08:27.095 fhemtest.myds.me Test_fhem 13339 FHEM - : 4: CamTER - CAMID already set - ignore get camid
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</pre>
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</ul>
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<br/>
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<br>
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<a name="Log2Syslogattr"></a>
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@ -573,8 +706,6 @@ Aug 18 21:26:54 fhemtest.myds.me 1 2017-08-18T21:26:54 fhemtest.myds.me Test_eve
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<br>
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Set the syslog protocol format. <br>
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Default value is "IETF" if not specified.
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The implemented BSD protocol is defined in <a href="https://tools.ietf.org/html/rfc3164"> RFC3164 </a> and the
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IETF protocol can be found in <a href="https://tools.ietf.org/html/rfc5424"> RFC5424 </a>
|
||||
</li><br>
|
||||
|
||||
<li><code>type [TCP|UDP]</code><br>
|
||||
@ -588,6 +719,11 @@ Aug 18 21:26:54 fhemtest.myds.me 1 2017-08-18T21:26:54 fhemtest.myds.me Test_eve
|
||||
The port of the syslog server is listening. Default port is 514 if not specified.
|
||||
</li><br>
|
||||
|
||||
<li><code>timeout</code><br>
|
||||
<br>
|
||||
Timeout for connection to the syslog server (TCP).
|
||||
</li><br>
|
||||
|
||||
<li><code>verbose</code><br>
|
||||
<br>
|
||||
To avoid loops, the output of verbose level of the Log2Syslog-Devices will only be reported into the local FHEM Logfile and
|
||||
@ -605,8 +741,11 @@ Aug 18 21:26:54 fhemtest.myds.me 1 2017-08-18T21:26:54 fhemtest.myds.me Test_eve
|
||||
<a name="Log2Syslog"></a>
|
||||
<h3>Log2Syslog</h3>
|
||||
<ul>
|
||||
Sendet FHEM Systemlog Einträge und/oder Events an einen externen Syslog-Server weiter. <br/>
|
||||
<br/>
|
||||
Sendet FHEM Systemlog Einträge und/oder Events an einen externen Syslog-Server weiter. <br>
|
||||
Die Implementierung des Syslog-Protokolls erfolgte entsprechend den Vorgaben von <a href="https://tools.ietf.org/html/rfc5424"> RFC5424 (IETF)</a>,
|
||||
<a href="https://tools.ietf.org/html/rfc3164"> RFC3164 (BSD)</a> sowie dem TLS Transport Protokoll nach
|
||||
<a href="https://tools.ietf.org/pdf/rfc5425.pdf"> RFC5425</a>. <br>
|
||||
<br>
|
||||
|
||||
<b>Voraussetzungen</b>
|
||||
<ul>
|
||||
@ -628,7 +767,7 @@ Aug 18 21:26:54 fhemtest.myds.me 1 2017-08-18T21:26:54 fhemtest.myds.me Test_eve
|
||||
<br>
|
||||
|
||||
<Zielhost> = Host (Name oder IP-Adresse) auf dem der Syslog-Server läuft <br>
|
||||
[ident:<ident>] = optinaler Programm Identifier. Wenn nicht gesetzt wird per default der Devicename benutzt. <br>
|
||||
[ident:<ident>] = optionaler Programm Identifier. Wenn nicht gesetzt wird per default der Devicename benutzt. <br>
|
||||
[event:<regexp>] = optionaler regulärer Ausdruck zur Filterung von Events zur Weiterleitung <br>
|
||||
[fhem:<regexp>] = optionaler regulärer Ausdruck zur Filterung von FHEM Logs zur Weiterleitung <br><br>
|
||||
|
||||
@ -668,8 +807,45 @@ Aug 18 21:06:45 fhemtest.myds.me 1 2017-08-18T21:06:45 fhemtest.myds.me Test_eve
|
||||
Aug 18 21:08:27 fhemtest.myds.me 1 2017-08-18T21:08:27.760 fhemtest.myds.me Test_fhem 13339 FHEM - : 4: CamTER - Informations of camera Terrasse retrieved
|
||||
Aug 18 21:08:27 fhemtest.myds.me 1 2017-08-18T21:08:27.095 fhemtest.myds.me Test_fhem 13339 FHEM - : 4: CamTER - CAMID already set - ignore get camid
|
||||
</pre>
|
||||
|
||||
Der Aufbau der Payload unterscheidet sich je nach verwendeten logFormat. <br><br>
|
||||
|
||||
<b>logFormat IETF:</b> <br><br>
|
||||
"<PRIVAL>1 TIME MYHOST IDENT PID MID - : MESSAGE" <br><br>
|
||||
|
||||
<ul>
|
||||
<table>
|
||||
<colgroup> <col width=10%> <col width=90%> </colgroup>
|
||||
<tr><td> PRIVAL </td><td> Priority Wert (kodiert aus "facility" und "severity") </td></tr>
|
||||
<tr><td> TIME </td><td> Timestamp nach RFC5424 </td></tr>
|
||||
<tr><td> MYHOST </td><td> Internal MYHOST </td></tr>
|
||||
<tr><td> IDENT </td><td> Ident-Tag aus DEF wenn angegeben, sonst der eigene Devicename. Die Angabe wird mit "_fhem" (FHEM-Log) bzw. "_event" (Event-Log) ergänzt. </td></tr>
|
||||
<tr><td> PID </td><td> fortlaufende Payload-ID </td></tr>
|
||||
<tr><td> MID </td><td> fester Wert "FHEM" </td></tr>
|
||||
<tr><td> MESSAGE </td><td> der zu übertragende Datensatz </td></tr>
|
||||
</table>
|
||||
</ul>
|
||||
<br/>
|
||||
<br>
|
||||
|
||||
<b>logFormat BSD:</b> <br><br>
|
||||
"<PRIVAL>MONAT TAG TIME MYHOST IDENT: : MESSAGE" <br><br>
|
||||
|
||||
<ul>
|
||||
<table>
|
||||
<colgroup> <col width=10%> <col width=90%> </colgroup>
|
||||
<tr><td> PRIVAL </td><td> Priority Wert (kodiert aus "facility" und "severity") </td></tr>
|
||||
<tr><td> MONAT </td><td> Monatsangabe nach RFC3164 </td></tr>
|
||||
<tr><td> TAG </td><td> Tag des Monats nach RFC3164 </td></tr>
|
||||
<tr><td> TIME </td><td> Zeitangabe nach RFC3164 </td></tr>
|
||||
<tr><td> MYHOST </td><td> Internal MYHOST </td></tr>
|
||||
<tr><td> IDENT </td><td> Ident-Tag aus DEF wenn angegeben, sonst der eigene Devicename. Die Angabe wird mit "_fhem" (FHEM-Log) bzw. "_event" (Event-Log) ergänzt. </td></tr>
|
||||
<tr><td> MESSAGE </td><td> der zu übertragende Datensatz </td></tr>
|
||||
</table>
|
||||
</ul>
|
||||
<br>
|
||||
|
||||
</ul>
|
||||
<br><br>
|
||||
|
||||
|
||||
<a name="Log2Syslogattr"></a>
|
||||
@ -707,8 +883,6 @@ Aug 18 21:26:54 fhemtest.myds.me 1 2017-08-18T21:26:54 fhemtest.myds.me Test_eve
|
||||
<br>
|
||||
Stellt das Protokollformat ein. <br>
|
||||
Der Standardwert ist "IETF". <br>
|
||||
Das implementierte BSD Protokoll ist definiert in <a href="https://tools.ietf.org/html/rfc3164"> RFC3164 </a>. Das
|
||||
weiterentwickelte IETF-Protokoll kann hier <a href="https://tools.ietf.org/html/rfc5424"> RFC5424 </a> nachgelesen werden.
|
||||
</li><br>
|
||||
|
||||
<li><code>type [TCP|UDP]</code><br>
|
||||
@ -722,6 +896,11 @@ Aug 18 21:26:54 fhemtest.myds.me 1 2017-08-18T21:26:54 fhemtest.myds.me Test_eve
|
||||
Der verwendete Port des Syslog-Servers. Default Port ist 514 wenn nicht gesetzt.
|
||||
</li><br>
|
||||
|
||||
<li><code>timeout</code><br>
|
||||
<br>
|
||||
Timeout für die Verbindung zum Syslog-Server (TCP).
|
||||
</li><br>
|
||||
|
||||
<li><code>verbose</code><br>
|
||||
<br>
|
||||
Die Ausgaben der Verbose-Level von Log2Syslog-Devices werden ausschließlich im lokalen FHEM Logfile ausgegeben und
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user