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-rw-r--r--scripts/monitoring/README158
-rw-r--r--scripts/monitoring/loopwatch.config.SAMPLE89
-rw-r--r--scripts/monitoring/lr.pl151
-rw-r--r--scripts/monitoring/ntp.pl479
-rw-r--r--scripts/monitoring/ntploopstat458
-rw-r--r--scripts/monitoring/ntploopwatch1667
-rw-r--r--scripts/monitoring/ntptrap463
-rw-r--r--scripts/monitoring/timelocal.pl77
8 files changed, 3542 insertions, 0 deletions
diff --git a/scripts/monitoring/README b/scripts/monitoring/README
new file mode 100644
index 0000000..f8eb0a9
--- /dev/null
+++ b/scripts/monitoring/README
@@ -0,0 +1,158 @@
+This directory contains support for monitoring the local clock of xntp daemons.
+
+WARNING: The scripts and routines contained in this directory are beta
+ release! Do not depend on their correct operation. They are,
+ however, in regular use at University of Erlangen-Nuernberg.
+ No severe problems are known for this code.
+
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+PLEASE THINK TWICE BEFORE STARTING MONITORING REMOTE XNTP DEAMONS !!!!
+MONITORING MAY INCREASE THE LOAD OF THE DEAMON MONITORED AND MAY
+INCREASE THE NETWORK LOAD SIGNIFICANTLY
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+
+Files are:
+
+README:
+ This file
+
+ntptrap:
+ perl script to log ntp mode 6 trap messages.
+
+ It sends a set_trap request to each server given and dumps the
+ trap messages received. It handles refresh of set_trap.
+ Currently it handles only NTP V2, however the NTP V3 servers
+ also accept v2 requests. It will not interpret v3 system and
+ peer stati correctly.
+
+ usage:
+ ntptrap [-n] [-p <port>] [-l <debug-output>] servers...
+
+ -n: do not send set_trap requests
+
+ port: port to listen for responses
+ useful if you have a configured trap
+
+ debug-output: file to write trace output to (for debugging)
+
+ This script convinced me that ntp trap messages are only of
+ little use.
+
+ntploopstat:
+ perl script to gather loop info statistics from xntpd via mode 7
+ LOOP_INFO requests.
+
+ This script collects data to allow monitoring of remote xntp servers
+ where it is not possible to directly access the loopstats file
+ produced by xntpd itself. Of course, it can be used to sample
+ a local server if it is not configured to produce a loopstats file.
+
+ Please note, this program poses a high load on the server as
+ a communication takes place every delay seconds ! USE WITH CARE !
+
+ usage:
+ ntploopstat [-d<delay>] [-t<timeout>] [-l <logfile>] [-v] [ntpserver]
+
+ delay: number of seconds to wait between samples
+ default: 60 seconds
+ timeout: number of seconds to wait for reply
+ default 12 seconds
+ logfile: file to log samples to
+ default: loopstats:<ntpserver>:
+ (note the trailing colon)
+ This name actually is a prefix.
+ The file name is dynamically derived by appending
+ the name of the month the sample belongs to.
+ Thus all samples of a month end up in the same file.
+
+ the format of the files generated is identical to the format used by
+ xntpd with the loopstats file:
+ MJD <seconds since midnight UTC> offset frequency compliance
+
+ if a timeout occurs the next sample is tried after delay/2 seconds
+
+ The script will terminate after MAX_FAIL (currently 60)
+ consecutive errors.
+
+ Errors are counted for:
+ - error on send call
+ - error on select call
+ - error on recv call
+ - short packet received
+ - bad packet
+ - error on open for logfile
+
+ntploopwatch:
+ perl script to display loop filter statistics collected by ntploopstat
+ or dumped directly by xntpd.
+
+ Gnuplot is used to produce a graphical representation of the sample
+ values, that have been preprocessed and analysed by this script.
+
+ It can either be called to produce a printout of specific data set or
+ used to continously monitor the values. Monitoring is achieved by
+ periodically reprocessing the logfiles, which are updated regularly
+ either by a running ntploopstat process or by the running xntpd.
+
+ usage:
+ to watch statistics permanently:
+ ntploopwatch [-v[<level>]] [-c <config-file>] [-d <working-dir>]
+
+ to get a single print out specify also
+ -P<printer> [-s<samples>]
+ [-S <start-time>] [-E <end-time>]
+ [-O <MaxOffs>] [-o <MinOffs>]
+
+ level: level of verbosity for debugging
+ config-file: file to read configurable settings from
+ On each iteration it is checked and reread
+ if it has been changed
+ default: loopwatch.config
+ working-dir: specify working directory for process, affects
+ interpretation of relative file names
+
+ All other flags are only useful with printing plots, as otherwise
+ command line values would be replaced by settings from the config file.
+
+ printer: specify printer to print plot
+ BSD print systems semantics apply; if printer
+ is omitted the name "ps" is used; plots are
+ prepared using PostScript, thus the printer
+ should best accept postscript input
+
+ For the following see also the comments in loopwatch.config.SAMPLE
+
+ samples: use last # samples from input data
+ start-time: ignore input samples before this date
+ end-time: ignore input samples after this date
+ if both start-time and end-time are specified
+ a given samples value is ignored
+ MaxOffs:
+ MinOffs: restrict value range
+
+loopwatch.config.SAMPLE:
+ sample config file for ntploopwatch
+ each configurable option is explained there
+
+lr.pl:
+ linear regression package used by ntploopwatch to compute
+ linear approximations for frequency and offset values
+ within display range
+
+timelocal.pl:
+
+ used during conversion of ISO_DATE_TIME values specified in
+ loopwatch config files to unix epoch values (seconds since
+ 1970-01-01_00:00_00 UTC)
+
+ A version of this file is distributed with perl-4.x, however,
+ it has a bug related to dates crossing 1970, causing endless loops..
+ The version contained here has been fixed.
+
+ntp.pl:
+ perl support for ntp v2 mode 6 message handling
+ WARNING: This code is beta level - it triggers a memory leak;
+ as for now it is not quite clear, wether this is caused by a
+ bug in perl or by bad usage of perl within this script.
+
diff --git a/scripts/monitoring/loopwatch.config.SAMPLE b/scripts/monitoring/loopwatch.config.SAMPLE
new file mode 100644
index 0000000..8cefea3
--- /dev/null
+++ b/scripts/monitoring/loopwatch.config.SAMPLE
@@ -0,0 +1,89 @@
+# sample configuration and control file for ntploowatch
+#
+# delay: sampling interval in seconds
+delay=60
+# samples: use only last # samples
+samples=600
+# DO NOT USE srcprefix in shared config files
+# srcprefix: name of file to read samples from
+# current time suffix (month name) is appended
+# defaults to "./var@$STATHOST/loopstats."
+# The string "$STATHOST"is replaced by the name of the host
+# being monitored
+#srcprefix=./var@$STATHOST/loopstats.
+#
+# showoffs: yes/no control display of offset values
+showoffs=yes
+#
+# showfreq: yes/no control display of frequency values
+showfreq=yes
+#
+# showcmpl: yes/no control display of compliance values
+showcmpl=no
+#
+# showoreg: yes/no control display of linear regression of offset values
+showoreg=no
+#
+# showfreg: yes/no control display of linear regression of frequency values
+showfreg=no
+#
+# timebase: dynamic/ISO_DATE_TIME point of zero for linear regression
+# ISO_DATE_TIME: yyyy-mm-dd_hh:mm:ss.ms
+# values are interpreted using local time zone
+# parts omitted from front default to current date/time
+# parts omitted from end default to lowest permitted values
+# to get aa:bb being interpreted as minutes:seconds use aa:bb.0
+# for dynamic '00:00:00.0 of current day' is used
+timebase=dynamic
+#
+# freqbase: dynamic/<baseval>
+# if a number is given, subtract this from sampling values for display
+# if dynamic is selected, freqbase is adjusted to fit into the range of
+# offset values
+freqbase=dynamic
+#
+# cmplscale: dynamic/<scaling>
+# if a number is given, the sampling values are divided by this number
+# if dynamic is selected, cmplscale is adjusted to fit into the range of
+# offset values
+cmplscale=dynamic
+#
+# DumbScale: 0/1
+# 0 enables dynamic adjust of value ranges for freqbase and cmplscale
+# timescale is labeled with human readable times
+# 1 only uses explicit scaling for numbers
+# timescale is labeled with hours relative to timebase
+DumbScale=0
+#
+# StartTime: none/ISO_DATE_TIME
+# ignore any samples before the specified date
+StartTime=none
+#
+# EndTime: none/ISO_DATE_TIME
+# ignore any samples after the specified date
+#
+# if both StartTime and EndTime are specified
+# the value specified for samples is ignored
+EndTime=none
+#
+# MaxOffs: none/<number>
+# limit display (y-axis) to values not larger than <number>
+MaxOffset=none
+#
+# MinOffs: none/<number>
+# limit display (y-axis) to values not smaller than <number>
+MinOffset=none
+
+#
+# verbose: <number>
+# specify level for debugging
+# default is 0 for printing and 1 for monitoring
+# level 1 will just print a timestamp for any display update
+# (this is every delay seconds)
+verbose=1
+#
+# deltaT: <seconds>
+# mark `holes' in the sample data grater than <seconds>
+# by a break in the plot
+# default: 512 seconds
+deltaT=512
diff --git a/scripts/monitoring/lr.pl b/scripts/monitoring/lr.pl
new file mode 100644
index 0000000..7980d22
--- /dev/null
+++ b/scripts/monitoring/lr.pl
@@ -0,0 +1,151 @@
+;#
+;# lr.pl,v 3.1 1993/07/06 01:09:08 jbj Exp
+;#
+;#
+;# Linear Regression Package for perl
+;# to be 'required' from perl
+;#
+;# Copyright (c) 1992
+;# Frank Kardel, Rainer Pruy
+;# Friedrich-Alexander Universitaet Erlangen-Nuernberg
+;#
+;# Copyright (c) 1997 by
+;# Ulrich Windl <Ulrich.Windl@rz.uni-regensburg.de>
+;# (Converted to a PERL 5.004 package)
+;#
+;#############################################################
+
+package lr;
+
+##
+## y = A + Bx
+##
+## B = (n * Sum(xy) - Sum(x) * Sum(y)) / (n * Sum(x^2) - Sum(x)^2)
+##
+## A = (Sum(y) - B * Sum(x)) / n
+##
+
+##
+## interface
+##
+;# init(tag); initialize data set for tag
+;# sample(x, y, tag); enter sample
+;# Y(x, tag); compute y for given x
+;# X(y, tag); compute x for given y
+;# r(tag); regression coefficient
+;# cov(tag); covariance
+;# A(tag);
+;# B(tag);
+;# sigma(tag); standard deviation
+;# mean(tag);
+#########################
+
+sub init
+{
+ my $self = shift;
+
+ $self->{n} = 0;
+ $self->{sx} = 0.0;
+ $self->{sx2} = 0.0;
+ $self->{sxy} = 0.0;
+ $self->{sy} = 0.0;
+ $self->{sy2} = 0.0;
+}
+
+sub sample($$$)
+{
+ my $self = shift;
+ my($_x, $_y) = @_;
+
+ ++($self->{n});
+ $self->{sx} += $_x;
+ $self->{sy} += $_y;
+ $self->{sxy} += $_x * $_y;
+ $self->{sx2} += $_x**2;
+ $self->{sy2} += $_y**2;
+}
+
+sub B($)
+{
+ my $self = shift;
+
+ return 1 unless ($self->{n} * $self->{sx2} - $self->{sx}**2);
+ return ($self->{n} * $self->{sxy} - $self->{sx} * $self->{sy})
+ / ($self->{n} * $self->{sx2} - $self->{sx}**2);
+}
+
+sub A($)
+{
+ my $self = shift;
+
+ return ($self->{sy} - B($self) * $self->{sx}) / $self->{n};
+}
+
+sub Y($$)
+{
+ my $self = shift;
+
+ return A($self) + B($self) * $_[$[];
+}
+
+sub X($$)
+{
+ my $self = shift;
+
+ return ($_[$[] - A($self)) / B($self);
+}
+
+sub r($)
+{
+ my $self = shift;
+
+ my $s = ($self->{n} * $self->{sx2} - $self->{sx}**2)
+ * ($self->{n} * $self->{sy2} - $self->{sy}**2);
+
+ return 1 unless $s;
+
+ return ($self->{n} * $self->{sxy} - $self->{sx} * $self->{sy}) / sqrt($s);
+}
+
+sub cov($)
+{
+ my $self = shift;
+
+ return ($self->{sxy} - $self->{sx} * $self->{sy} / $self->{n})
+ / ($self->{n} - 1);
+}
+
+sub sigma($)
+{
+ my $self = shift;
+
+ return 0 if $self->{n} <= 1;
+ return sqrt(($self->{sy2} - ($self->{sy} * $self->{sy}) / $self->{n})
+ / ($self->{n}));
+}
+
+sub mean($)
+{
+ my $self = shift;
+
+ return 0 if $self->{n} <= 0;
+ return $self->{sy} / $self->{n};
+}
+
+sub new
+{
+ my $class = shift;
+ my $self = {
+ (n => undef,
+ sx => undef,
+ sx2 => undef,
+ sxy => undef,
+ sy => undef,
+ sy2 => undef)
+ };
+ bless $self, $class;
+ init($self);
+ return $self;
+}
+
+1;
diff --git a/scripts/monitoring/ntp.pl b/scripts/monitoring/ntp.pl
new file mode 100644
index 0000000..b23f396
--- /dev/null
+++ b/scripts/monitoring/ntp.pl
@@ -0,0 +1,479 @@
+#!/usr/bin/perl -w
+;#
+;# ntp.pl,v 3.1 1993/07/06 01:09:09 jbj Exp
+;#
+;# process loop filter statistics file and either
+;# - show statistics periodically using gnuplot
+;# - or print a single plot
+;#
+;# Copyright (c) 1992
+;# Rainer Pruy Friedrich-Alexander Universitaet Erlangen-Nuernberg
+;#
+;#
+;#############################################################
+
+package ntp;
+
+$NTP_version = 2;
+$ctrl_mode=6;
+
+$byte1 = (($NTP_version & 0x7)<< 3) & 0x34 | ($ctrl_mode & 0x7);
+$MAX_DATA = 468;
+
+$sequence = 0; # initial sequence number incred before used
+$pad=4;
+$do_auth=0; # no possibility today
+$keyid=0;
+;#list if known keys (passwords)
+%KEYS = ( 0, "\200\200\200\200\200\200\200\200",
+ );
+
+;#-----------------------------------------------------------------------------
+;# access routines for ntp control packet
+ ;# NTP control message format
+ ;# C LI|VN|MODE LI 2bit=00 VN 3bit=2(3) MODE 3bit=6 : $byte1
+ ;# C R|E|M|Op R response E error M more Op opcode
+ ;# n sequence
+ ;# n status
+ ;# n associd
+ ;# n offset
+ ;# n count
+ ;# a+ data (+ padding)
+ ;# optional authentication data
+ ;# N key
+ ;# N2 checksum
+
+;# first byte of packet
+sub pkt_LI { return ($_[$[] >> 6) & 0x3; }
+sub pkt_VN { return ($_[$[] >> 3) & 0x7; }
+sub pkt_MODE { return ($_[$[] ) & 0x7; }
+
+;# second byte of packet
+sub pkt_R { return ($_[$[] & 0x80) == 0x80; }
+sub pkt_E { return ($_[$[] & 0x40) == 0x40; }
+sub pkt_M { return ($_[$[] & 0x20) == 0x20; }
+sub pkt_OP { return $_[$[] & 0x1f; }
+
+;#-----------------------------------------------------------------------------
+
+sub setkey
+{
+ local($id,$key) = @_;
+
+ $KEYS{$id} = $key if (defined($key));
+ if (! defined($KEYS{$id}))
+ {
+ warn "Key $id not yet specified - key not changed\n";
+ return undef;
+ }
+ return ($keyid,$keyid = $id)[$[];
+}
+
+;#-----------------------------------------------------------------------------
+sub numerical { $a <=> $b; }
+
+;#-----------------------------------------------------------------------------
+
+sub send #'
+{
+ local($fh,$opcode, $associd, $data,$address) = @_;
+ $fh = caller(0)."'$fh";
+
+ local($junksize,$junk,$packet,$offset,$ret);
+ $offset = 0;
+
+ $sequence++;
+ while(1)
+ {
+ $junksize = length($data);
+ $junksize = $MAX_DATA if $junksize > $MAX_DATA;
+
+ ($junk,$data) = $data =~ /^(.{$junksize})(.*)$/;
+ $packet
+ = pack("C2n5a".(($junk eq "") ? 0 : &pad($junksize+12,$pad)-12),
+ $byte1,
+ ($opcode & 0x1f) | ($data ? 0x20 : 0),
+ $sequence,
+ 0, $associd,
+ $offset, $junksize, $junk);
+ if ($do_auth)
+ {
+ ;# not yet
+ }
+ $offset += $junksize;
+
+ if (defined($address))
+ {
+ $ret = send($fh, $packet, 0, $address);
+ }
+ else
+ {
+ $ret = send($fh, $packet, 0);
+ }
+
+ if (! defined($ret))
+ {
+ warn "send failed: $!\n";
+ return undef;
+ }
+ elsif ($ret != length($packet))
+ {
+ warn "send failed: sent only $ret from ".length($packet). "bytes\n";
+ return undef;
+ }
+ return $sequence unless $data;
+ }
+}
+
+;#-----------------------------------------------------------------------------
+;# status interpretation
+;#
+sub getval
+{
+ local($val,*list) = @_;
+
+ return $list{$val} if defined($list{$val});
+ return sprintf("%s#%d",$list{"-"},$val) if defined($list{"-"});
+ return "unknown-$val";
+}
+
+;#---------------------------------
+;# system status
+;#
+;# format: |LI|CS|SECnt|SECode| LI=2bit CS=6bit SECnt=4bit SECode=4bit
+sub ssw_LI { return ($_[$[] >> 14) & 0x3; }
+sub ssw_CS { return ($_[$[] >> 8) & 0x3f; }
+sub ssw_SECnt { return ($_[$[] >> 4) & 0xf; }
+sub ssw_SECode { return $_[$[] & 0xf; }
+
+%LI = ( 0, "leap_none", 1, "leap_add_sec", 2, "leap_del_sec", 3, "sync_alarm", "-", "leap");
+%ClockSource = (0, "sync_unspec",
+ 1, "sync_lf_clock",
+ 2, "sync_uhf_clock",
+ 3, "sync_hf_clock",
+ 4, "sync_local_proto",
+ 5, "sync_ntp",
+ 6, "sync_udp/time",
+ 7, "sync_wristwatch",
+ "-", "ClockSource",
+ );
+
+%SystemEvent = (0, "event_unspec",
+ 1, "event_restart",
+ 2, "event_fault",
+ 3, "event_sync_chg",
+ 4, "event_sync/strat_chg",
+ 5, "event_clock_reset",
+ 6, "event_bad_date",
+ 7, "event_clock_excptn",
+ "-", "event",
+ );
+sub LI
+{
+ &getval(&ssw_LI($_[$[]),*LI);
+}
+sub ClockSource
+{
+ &getval(&ssw_CS($_[$[]),*ClockSource);
+}
+
+sub SystemEvent
+{
+ &getval(&ssw_SECode($_[$[]),*SystemEvent);
+}
+
+sub system_status
+{
+ return sprintf("%s, %s, %d event%s, %s", &LI($_[$[]), &ClockSource($_[$[]),
+ &ssw_SECnt($_[$[]), ((&ssw_SECnt($_[$[])==1) ? "" : "s"),
+ &SystemEvent($_[$[]));
+}
+;#---------------------------------
+;# peer status
+;#
+;# format: |PStat|PSel|PCnt|PCode| Pstat=6bit PSel=2bit PCnt=4bit PCode=4bit
+sub psw_PStat_config { return ($_[$[] & 0x8000) == 0x8000; }
+sub psw_PStat_authenable { return ($_[$[] & 0x4000) == 0x4000; }
+sub psw_PStat_authentic { return ($_[$[] & 0x2000) == 0x2000; }
+sub psw_PStat_reach { return ($_[$[] & 0x1000) == 0x1000; }
+sub psw_PStat_sane { return ($_[$[] & 0x0800) == 0x0800; }
+sub psw_PStat_dispok { return ($_[$[] & 0x0400) == 0x0400; }
+sub psw_PStat { return ($_[$[] >> 10) & 0x3f; }
+sub psw_PSel { return ($_[$[] >> 8) & 0x3; }
+sub psw_PCnt { return ($_[$[] >> 4) & 0xf; }
+sub psw_PCode { return $_[$[] & 0xf; }
+
+%PeerSelection = (0, "sel_reject",
+ 1, "sel_candidate",
+ 2, "sel_selcand",
+ 3, "sel_sys.peer",
+ "-", "PeerSel",
+ );
+%PeerEvent = (0, "event_unspec",
+ 1, "event_ip_err",
+ 2, "event_authen",
+ 3, "event_unreach",
+ 4, "event_reach",
+ 5, "event_clock_excptn",
+ 6, "event_stratum_chg",
+ "-", "event",
+ );
+
+sub PeerSelection
+{
+ &getval(&psw_PSel($_[$[]),*PeerSelection);
+}
+
+sub PeerEvent
+{
+ &getval(&psw_PCode($_[$[]),*PeerEvent);
+}
+
+sub peer_status
+{
+ local($x) = ("");
+ $x .= "config," if &psw_PStat_config($_[$[]);
+ $x .= "authenable," if &psw_PStat_authenable($_[$[]);
+ $x .= "authentic," if &psw_PStat_authentic($_[$[]);
+ $x .= "reach," if &psw_PStat_reach($_[$[]);
+ $x .= &psw_PStat_sane($_[$[]) ? "sane," : "insane,";
+ $x .= "hi_disp," unless &psw_PStat_dispok($_[$[]);
+
+ $x .= sprintf(" %s, %d event%s, %s", &PeerSelection($_[$[]),
+ &psw_PCnt($_[$[]), ((&psw_PCnt($_[$[]) == 1) ? "" : "s"),
+ &PeerEvent($_[$[]));
+ return $x;
+}
+
+;#---------------------------------
+;# clock status
+;#
+;# format: |CStat|CEvnt| CStat=8bit CEvnt=8bit
+sub csw_CStat { return ($_[$[] >> 8) & 0xff; }
+sub csw_CEvnt { return $_[$[] & 0xff; }
+
+%ClockStatus = (0, "clk_nominal",
+ 1, "clk_timeout",
+ 2, "clk_badreply",
+ 3, "clk_fault",
+ 4, "clk_prop",
+ 5, "clk_baddate",
+ 6, "clk_badtime",
+ "-", "clk",
+ );
+
+sub clock_status
+{
+ return sprintf("%s, last %s",
+ &getval(&csw_CStat($_[$[]),*ClockStatus),
+ &getval(&csw_CEvnt($_[$[]),*ClockStatus));
+}
+
+;#---------------------------------
+;# error status
+;#
+;# format: |Err|reserved| Err=8bit
+;#
+sub esw_Err { return ($_[$[] >> 8) & 0xff; }
+
+%ErrorStatus = (0, "err_unspec",
+ 1, "err_auth_fail",
+ 2, "err_invalid_fmt",
+ 3, "err_invalid_opcode",
+ 4, "err_unknown_assoc",
+ 5, "err_unknown_var",
+ 6, "err_invalid_value",
+ 7, "err_adm_prohibit",
+ );
+
+sub error_status
+{
+ return sprintf("%s", &getval(&esw_Err($_[$[]),*ErrorStatus));
+}
+
+;#-----------------------------------------------------------------------------
+;#
+;# cntrl op name translation
+
+%CntrlOpName = (1, "read_status",
+ 2, "read_variables",
+ 3, "write_variables",
+ 4, "read_clock_variables",
+ 5, "write_clock_variables",
+ 6, "set_trap",
+ 7, "trap_response",
+ 31, "unset_trap", # !!! unofficial !!!
+ "-", "cntrlop",
+ );
+
+sub cntrlop_name
+{
+ return &getval($_[$[],*CntrlOpName);
+}
+
+;#-----------------------------------------------------------------------------
+
+$STAT_short_pkt = 0;
+$STAT_pkt = 0;
+
+;# process a NTP control message (response) packet
+;# returns a list ($ret,$data,$status,$associd,$op,$seq,$auth_keyid)
+;# $ret: undef --> not yet complete
+;# "" --> complete packet received
+;# "ERROR" --> error during receive, bad packet, ...
+;# else --> error packet - list may contain useful info
+
+
+sub handle_packet
+{
+ local($pkt,$from) = @_; # parameters
+ local($len_pkt) = (length($pkt));
+;# local(*FRAGS,*lastseen);
+ local($li_vn_mode,$r_e_m_op,$seq,$status,$associd,$offset,$count,$data);
+ local($autch_keyid,$auth_cksum);
+
+ $STAT_pkt++;
+ if ($len_pkt < 12)
+ {
+ $STAT_short_pkt++;
+ return ("ERROR","short packet received");
+ }
+
+ ;# now break packet apart
+ ($li_vn_mode,$r_e_m_op,$seq,$status,$associd,$offset,$count,$data) =
+ unpack("C2n5a".($len_pkt-12),$pkt);
+ $data=substr($data,$[,$count);
+ if ((($len_pkt - 12) - &pad($count,4)) >= 12)
+ {
+ ;# looks like an authenticator
+ ($auth_keyid,$auth_cksum) =
+ unpack("Na8",substr($pkt,$len_pkt-12+$[,12));
+ $STAT_auth++;
+ ;# no checking of auth_cksum (yet ?)
+ }
+
+ if (&pkt_VN($li_vn_mode) != $NTP_version)
+ {
+ $STAT_bad_version++;
+ return ("ERROR","version ".&pkt_VN($li_vn_mode)."packet ignored");
+ }
+
+ if (&pkt_MODE($li_vn_mode) != $ctrl_mode)
+ {
+ $STAT_bad_mode++;
+ return ("ERROR", "mode ".&pkt_MODE($li_vn_mode)." packet ignored");
+ }
+
+ ;# handle single fragment fast
+ if ($offset == 0 && &pkt_M($r_e_m_op) == 0)
+ {
+ $STAT_single_frag++;
+ if (&pkt_E($r_e_m_op))
+ {
+ $STAT_err_pkt++;
+ return (&error_status($status),
+ $data,$status,$associd,&pkt_OP($r_e_m_op),$seq,
+ $auth_keyid);
+ }
+ else
+ {
+ return ("",
+ $data,$status,$associd,&pkt_OP($r_e_m_op),$seq,
+ $auth_keyid);
+ }
+ }
+ else
+ {
+ ;# fragment - set up local name space
+ $id = "$from$seq".&pkt_OP($r_e_m_op);
+ $ID{$id} = 1;
+ *FRAGS = "$id FRAGS";
+ *lastseen = "$id lastseen";
+
+ $STAT_frag++;
+
+ $lastseen = 1 if !&pkt_M($r_e_m_op);
+ if (!defined(%FRAGS))
+ {
+ print((&pkt_M($r_e_m_op) ? " more" : "")."\n");
+ $FRAGS{$offset} = $data;
+ ;# save other info
+ @FRAGS = ($status,$associd,&pkt_OP($r_e_m_op),$seq,$auth_keyid,$r_e_m_op);
+ }
+ else
+ {
+ print((&pkt_M($r_e_m_op) ? " more" : "")."\n");
+ ;# add frag to previous - combine on the fly
+ if (defined($FRAGS{$offset}))
+ {
+ $STAT_dup_frag++;
+ return ("ERROR","duplicate fragment at $offset seq=$seq");
+ }
+
+ $FRAGS{$offset} = $data;
+
+ undef($loff);
+ foreach $off (sort numerical keys(%FRAGS))
+ {
+ next unless defined($FRAGS{$off});
+ if (defined($loff) &&
+ ($loff + length($FRAGS{$loff})) == $off)
+ {
+ $FRAGS{$loff} .= $FRAGS{$off};
+ delete $FRAGS{$off};
+ last;
+ }
+ $loff = $off;
+ }
+
+ ;# return packet if all frags arrived
+ ;# at most two frags with possible padding ???
+ if ($lastseen && defined($FRAGS{0}) &&
+ (((scalar(@x=sort numerical keys(%FRAGS)) == 2) &&
+ (length($FRAGS{0}) + 8) > $x[$[+1]) ||
+ (scalar(@x=sort numerical keys(%FRAGS)) < 2)))
+ {
+ @x=((&pkt_E($r_e_m_op) ? &error_status($status) : ""),
+ $FRAGS{0},@FRAGS);
+ &pkt_E($r_e_m_op) ? $STAT_err_frag++ : $STAT_frag_all++;
+ undef(%FRAGS);
+ undef(@FRAGS);
+ undef($lastseen);
+ delete $ID{$id};
+ &main'clear_timeout($id);
+ return @x;
+ }
+ else
+ {
+ &main'set_timeout($id,time+$timeout,"&ntp'handle_packet_timeout(\"".unpack("H*",$id)."\");"); #'";
+ }
+ }
+ return (undef);
+ }
+}
+
+sub handle_packet_timeout
+{
+ local($id) = @_;
+ local($r_e_m_op,*FRAGS,*lastseen,@x) = (@FRAGS[$[+5]);
+
+ *FRAGS = "$id FRAGS";
+ *lastseen = "$id lastseen";
+
+ @x=((&pkt_E($r_e_m_op) ? &error_status($status) : "TIMEOUT"),
+ $FRAGS{0},@FRAGS[$[ .. $[+4]);
+ $STAT_frag_timeout++;
+ undef(%FRAGS);
+ undef(@FRAGS);
+ undef($lastseen);
+ delete $ID{$id};
+ return @x;
+}
+
+
+sub pad
+{
+ return $_[$[+1] * int(($_[$[] + $_[$[+1] - 1) / $_[$[+1]);
+}
+
+1;
diff --git a/scripts/monitoring/ntploopstat b/scripts/monitoring/ntploopstat
new file mode 100644
index 0000000..7583c7c
--- /dev/null
+++ b/scripts/monitoring/ntploopstat
@@ -0,0 +1,458 @@
+#!/usr/bin/perl -w
+# --*-perl-*-
+;#
+;# ntploopstat,v 3.1 1993/07/06 01:09:11 jbj Exp
+;#
+;# Poll NTP server using NTP mode 7 loopinfo request.
+;# Log info and timestamp to file for processing by ntploopwatch.
+;#
+;#
+;# Copyright (c) 1992
+;# Rainer Pruy Friedrich-Alexander Universitaet Erlangen-Nuernberg
+;#
+;#################################################################
+;#
+;# The format written to the logfile is the same as used by xntpd
+;# for the loopstats file.
+;# This script however allows to gather loop filter statistics from
+;# remote servers where you do not have access to the loopstats logfile.
+;#
+;# Please note: Communication delays affect the accuracy of the
+;# timestamps recorded. Effects from these delays will probably
+;# not show up, as timestamps are recorded to the second only.
+;# (Should have implemented &gettimeofday()..)
+;#
+
+$0 =~ s!^.*/([^/]+)$!$1!; # beautify script name
+
+$ntpserver = 'localhost'; # default host to poll
+$delay = 60; # default sampling rate
+ ;# keep it shorter than minpoll (=64)
+ ;# to get all values
+
+require "ctime.pl";
+;# handle bug in early ctime distributions
+$ENV{'TZ'} = 'MET' unless defined($ENV{'TZ'}) || $] > 4.010;
+
+if (defined(@ctime'MoY))
+{
+ *MonthName = *ctime'MoY;
+}
+else
+{
+ @MonthName = ('Jan','Feb','Mar','Apr','May','Jun',
+ 'Jul','Aug','Sep','Oct','Nov','Dec');
+}
+
+;# this routine can be redefined to point to syslog if necessary
+sub msg
+{
+ return unless $verbose;
+
+ print STDERR "$0: ";
+ printf STDERR @_;
+}
+
+;#############################################################
+;#
+;# process command line
+$usage = <<"E-O-S";
+
+usage:
+ $0 [-d<delay>] [-t<timeout>] [-l <logfile>] [-v] [ntpserver]
+E-O-S
+
+while($_ = shift)
+{
+ /^-v(\d*)$/ && ($verbose=($1 eq '') ? 1 : $1,1) && next;
+ /^-d(\d*)$/ &&
+ do {
+ ($1 ne '') && ($delay = $1,1) && next;
+ @ARGV || die("$0: delay value missing after -d\n$usage");
+ $delay = shift;
+ ($delay >= 0) || die("$0: bad delay value \"$delay\"\n$usage");
+ next;
+ };
+ /^-l$/ &&
+ do {
+ @ARGV || die("$0: logfile missing after -l\n$usage");
+ $logfile = shift;
+ next;
+ };
+ /^-t(\d*(\.\d*)?)$/ &&
+ do {
+ ($1 ne '') && ($timeout = $1,1) && next;
+ @ARGV || die("$0: timeout value missing after -t\n$usage\n");
+ $timeout = shift;
+ ($timeout > 0) ||
+ die("$0: bad timeout value \"$timeout\"\n$usage");
+ next;
+ };
+
+ /^-/ && die("$0: unknown option \"$_\"\n$usage");
+
+ ;# any other argument is server to poll
+ $ntpserver = $_;
+ last;
+}
+
+if (@ARGV)
+{
+ warn("unexpected arguments: ".join(" ",@ARGV).".\n");
+ die("$0: too many servers specified\n$usage");
+}
+
+;# logfile defaults to include server name
+;# The name of the current month is appended and
+;# the file is opened and closed for each sample.
+;#
+$logfile = "loopstats:$ntpserver." unless defined($logfile);
+$timeout = 12.0 unless defined($timeout); # wait $timeout seconds for reply
+
+$MAX_FAIL = 60; # give up after $MAX_FAIL failed polls
+
+
+$MJD_1970 = 40587;
+
+if (eval 'require "syscall.ph";')
+{
+ if (defined(&SYS_gettimeofday))
+ {
+ ;# assume standard
+ ;# gettimeofday(struct timeval *tp,struct timezone *tzp)
+ ;# syntax for gettimeofday syscall
+ ;# tzp = NULL -> undef
+ ;# tp = (long,long)
+ eval 'sub time { local($tz) = pack("LL",0,0);
+ (&msg("gettimeofday failed: $!\n"),
+ return (time))
+ unless syscall(&SYS_gettimeofday,$tz,undef) == 0;
+ local($s,$us) = unpack("LL",$tz);
+ return $s + $us/1000000; }';
+ local($t1,$t2,$t3);
+ $t1 = time;
+ eval '$t2 = &time;';
+ $t3 = time;
+ die("$0: gettimeofday failed: $@.\n") if defined($@) && $@;
+ die("$0: gettimeofday inconsistency time=$t1,gettimeofday=$t2,time=$t2\n")
+ if (int($t1) != int($t2) && int($t3) != int($t2));
+ &msg("Using gettimeofday for timestamps\n");
+ }
+ else
+ {
+ warn("No gettimeofday syscall found - using time builtin for timestamps\n");
+ eval 'sub time { return time; }';
+ }
+}
+else
+{
+ warn("No syscall.ph file found - using time builtin for timestamps\n");
+ eval 'sub time { return time; }';
+}
+
+
+;#------------------+
+;# from ntp_request.h
+;#------------------+
+
+;# NTP mode 7 packet format:
+;# Byte 1: ResponseBit MoreBit Version(3bit) Mode(3bit)==7
+;# Byte 2: AuthBit Sequence # - 0 - 127 see MoreBit
+;# Byte 3: Implementation #
+;# Byte 4: Request Code
+;#
+;# Short 1: Err(3bit) NumItems(12bit)
+;# Short 2: MBZ(3bit)=0 DataItemSize(12bit)
+;# 0 - 500 byte Data
+;# if AuthBit is set:
+;# Long: KeyId
+;# 2xLong: AuthCode
+
+;#
+$IMPL_XNTPD = 2;
+$REQ_LOOP_INFO = 8;
+
+
+;# request packet for REQ_LOOP_INFO:
+;# B1: RB=0 MB=0 V=2 M=7
+;# B2: S# = 0
+;# B3: I# = IMPL_XNTPD
+;# B4: RC = REQ_LOOP_INFO
+;# S1: E=0 NI=0
+;# S2: MBZ=0 DIS=0
+;# data: 32 byte 0 padding
+;# 8byte timestamp if encryption, 0 padding otherwise
+$loopinfo_reqpkt =
+ pack("CCCC nn x32 x8", 0x17, 0, $IMPL_XNTPD, $REQ_LOOP_INFO, 0, 0);
+
+;# ignore any auth data in packets
+$loopinfo_response_size =
+ 1+1+1+1+2+2 # header size like request pkt
+ + 8 # l_fp last_offset
+ + 8 # l_fp drift_comp
+ + 4 # u_long compliance
+ + 4 # u_long watchdog_timer
+ ;
+$loopinfo_response_fmt = "C4n2N2N2NN";
+$loopinfo_response_fmt_v2 = "C4n2N2N2N2N";
+
+;#
+;# prepare connection to server
+;#
+
+;# workaround for broken socket.ph on dynix_ptx
+eval 'sub INTEL {1;}' unless defined(&INTEL);
+eval 'sub ATT {1;}' unless defined(&ATT);
+
+require "sys/socket.ph";
+
+require 'netinet/in.ph';
+
+;# if you do not have netinet/in.ph enable the following lines
+;#eval 'sub INADDR_ANY { 0x00000000; }' unless defined(&INADDR_ANY);
+;#eval 'sub IPPRORO_UDP { 17; }' unless defined(&IPPROTO_UDP);
+
+if ($ntpserver =~ /^((0x?)?\w+)\.((0x?)?\w+)\.((0x?)?\w+)\.((0x?)?\w+)$/)
+{
+ local($a,$b,$c,$d) = ($1,$3,$5,$7);
+ $a = oct($a) if defined($2);
+ $b = oct($b) if defined($4);
+ $c = oct($c) if defined($6);
+ $d = oct($d) if defined($8);
+ $server_addr = pack("C4", $a,$b,$c,$d);
+
+ $server_mainname
+ = (gethostbyaddr($server_addr,&AF_INET))[$[] || $ntpserver;
+}
+else
+{
+ ($server_mainname,$server_addr)
+ = (gethostbyname($ntpserver))[$[,$[+4];
+
+ die("$0: host \"$ntpserver\" is unknown\n")
+ unless defined($server_addr);
+}
+&msg ("Address of server \"$ntpserver\" is \"%d.%d.%d.%d\"\n",
+ unpack("C4",$server_addr));
+
+$proto_udp = (getprotobyname('udp'))[$[+2] || &IPPROTO_UDP;
+
+$ntp_port =
+ (getservbyname('ntp','udp'))[$[+2] ||
+ (warn "Could not get port number for service \"ntp/udp\" using 123\n"),
+ ($ntp_port=123);
+
+;#
+0 && &SOCK_DGRAM; # satisfy perl -w ...
+socket(S, &AF_INET, &SOCK_DGRAM, $proto_udp) ||
+ die("Cannot open socket: $!\n");
+
+bind(S, pack("S n N x8", &AF_INET, 0, &INADDR_ANY)) ||
+ die("Cannot bind: $!\n");
+
+($my_port, $my_addr) = (unpack("S n a4 x8",getsockname(S)))[$[+1,$[+2];
+
+&msg("Listening at address %d.%d.%d.%d port %d\n",
+ unpack("C4",$my_addr), $my_port);
+
+$server_inaddr = pack("Sna4x8", &AF_INET, $ntp_port, $server_addr);
+
+;############################################################
+;#
+;# the main loop:
+;# send request
+;# get reply
+;# wait til next sample time
+
+undef($lasttime);
+$lostpacket = 0;
+
+while(1)
+{
+ $stime = &time;
+
+ &msg("Sending request $stime...\n");
+
+ $ret = send(S,$loopinfo_reqpkt,0,$server_inaddr);
+
+ if (! defined($ret) || $ret < length($loopinfo_reqpkt))
+ {
+ warn("$0: send failed ret=($ret): $!\n");
+ $fail++;
+ next;
+ }
+
+ &msg("Waiting for reply...\n");
+
+ $mask = ""; vec($mask,fileno(S),1) = 1;
+ $ret = select($mask,undef,undef,$timeout);
+
+ if (! defined($ret))
+ {
+ warn("$0: select failed: $!\n");
+ $fail++;
+ next;
+ }
+ elsif ($ret == 0)
+ {
+ warn("$0: request to $ntpserver timed out ($timeout seconds)\n");
+ ;# do not count this event as failure
+ ;# it usually this happens due to dropped udp packets on noisy and
+ ;# havily loaded lines, so just try again;
+ $lostpacket = 1;
+ next;
+ }
+
+ &msg("Receiving reply...\n");
+
+ $len = 520; # max size of a mode 7 packet
+ $reply = ""; # just make it defined for -w
+ $ret = recv(S,$reply,$len,0);
+
+ if (!defined($ret))
+ {
+ warn("$0: recv failed: $!\n");
+ $fail++;
+ next;
+ }
+
+ $etime = &time;
+ &msg("Received at\t$etime\n");
+
+ ;#$time = ($stime + $etime) / 2; # symmetric delay assumed
+ $time = $etime; # the above assumption breaks for X25
+ ;# so taking etime makes timestamps be a
+ ;# little late, but keeps them increasing
+ ;# monotonously
+
+ &msg(sprintf("Reply from %d.%d.%d.%d took %f seconds\n",
+ (unpack("SnC4",$ret))[$[+2 .. $[+5], ($etime - $stime)));
+
+ if ($len < $loopinfo_response_size)
+ {
+ warn("$0: short packet ($len bytes) received ($loopinfo_response_size bytes expected\n");
+ $fail++;
+ next;
+ }
+
+ ($b1,$b2,$b3,$b4,$s1,$s2,
+ $offset_i,$offset_f,$drift_i,$drift_f,$compl,$watchdog)
+ = unpack($loopinfo_response_fmt,$reply);
+
+ ;# check reply
+ if (($s1 >> 12) != 0) # error !
+ {
+ die("$0: got error reply ".($s1>>12)."\n");
+ }
+ if (($b1 != 0x97 && $b1 != 0x9f) || # Reply NotMore V=2 M=7
+ ($b2 != 0 && $b2 != 0x80) || # S=0 Auth no/yes
+ $b3 != $IMPL_XNTPD || # ! IMPL_XNTPD
+ $b4 != $REQ_LOOP_INFO || # Ehh.. not loopinfo reply ?
+ $s1 != 1 || # ????
+ ($s2 != 24 && $s2 != 28) #
+ )
+ {
+ warn("$0: Bad/unexpected reply from server:\n");
+ warn(" \"".unpack("H*",$reply)."\"\n");
+ warn(" ".sprintf("b1=%x b2=%x b3=%x b4=%x s1=%d s2=%d\n",
+ $b1,$b2,$b3,$b4,$s1,$s2));
+ $fail++;
+ next;
+ }
+ elsif ($s2 == 28)
+ {
+ ;# seems to be a version 2 xntpd
+ ($b1,$b2,$b3,$b4,$s1,$s2,
+ $offset_i,$offset_f,$drift_i,$drift_f,$compl_i,$compl_f,$watchdog)
+ = unpack($loopinfo_response_fmt_v2,$reply);
+ $compl = &lfptoa($compl_i, $compl_f);
+ }
+
+ $time -= $watchdog;
+
+ $offset = &lfptoa($offset_i, $offset_f);
+ $drift = &lfptoa($drift_i, $drift_f);
+
+ &log($time,$offset,$drift,$compl) && ($fail = 0);;
+}
+continue
+{
+ die("$0: Too many failures - terminating\n") if $fail > $MAX_FAIL;
+ &msg("Sleeping " . ($lostpacket ? ($delay / 2) : $delay) . " seconds...\n");
+
+ sleep($lostpacket ? ($delay / 2) : $delay);
+ $lostpacket = 0;
+}
+
+sub log
+{
+ local($time,$offs,$freq,$cmpl) = @_;
+ local($y,$m,$d);
+ local($fname,$suff) = ($logfile);
+
+
+ ;# silently drop sample if distance to last sample is too low
+ if (defined($lasttime) && ($lasttime + 2) >= $time)
+ {
+ &msg("Dropped packet - old sample\n");
+ return 1;
+ }
+
+ ;# $suff determines which samples end up in the same file
+ ;# could have used $year (;-) or WeekOfYear, DayOfYear,....
+ ;# Change it to your suit...
+
+ ($d,$m,$y) = (localtime($time))[$[+3 .. $[+5];
+ $suff = sprintf("%04d%02d%02d",$y+1900,$m+1,$d);
+ $fname .= $suff;
+ if (!open(LOG,">>$fname"))
+ {
+ warn("$0: open($fname) failed: $!\n");
+ $fail++;
+ return 0;
+ }
+ else
+ {
+ ;# file format
+ ;# MJD seconds offset drift compliance
+ printf LOG ("%d %.3lf %.8lf %.7lf %d\n",
+ int($time/86400)+$MJD_1970,
+ $time - int($time/86400) * 86400,
+ $offs,$freq,$cmpl);
+ close(LOG);
+ $lasttime = $time;
+ }
+ return 1;
+}
+
+;# see ntp_fp.h to understand this
+sub lfptoa
+{
+ local($i,$f) = @_;
+ local($sign) = 1;
+
+
+ if ($i & 0x80000000)
+ {
+ if ($f == 0)
+ {
+ $i = -$i;
+ }
+ else
+ {
+ $f = -$f;
+ $i = ~$i;
+ $i += 1; # 2s complement
+ }
+ $sign = -1;
+ ;#print "NEG: $i $f\n";
+ }
+ else
+ {
+ ;#print "POS: $i $f\n";
+ }
+ ;# unlike xntpd I have perl do the dirty work.
+ ;# Using floats here may affect precision, but
+ ;# currently these bits aren't significant anyway
+ return $sign * ($i + $f/2**32);
+}
diff --git a/scripts/monitoring/ntploopwatch b/scripts/monitoring/ntploopwatch
new file mode 100644
index 0000000..db661d3
--- /dev/null
+++ b/scripts/monitoring/ntploopwatch
@@ -0,0 +1,1667 @@
+#!/usr/bin/perl -w
+;# --*-perl-*--
+;#
+;# /src/NTP/ntp-4/scripts/monitoring/ntploopwatch,v 4.3 1999/02/21 12:18:38 kardel RELEASE_19990228_A
+;# RELEASE_19990228_A
+;#
+;# process loop filter statistics file and either
+;# - show statistics periodically using gnuplot
+;# - or print a single plot
+;#
+;# Copyright (c) 1992-1998
+;# Rainer Pruy, Friedrich-Alexander Universität Erlangen-Nürnberg
+;#
+;#
+;#############################################################
+$0 =~ s!^.*/([^/]+)$!$1!;
+$F = ' ' x length($0);
+$|=1;
+
+$ENV{'SHELL'} = '/bin/sh'; # use bourne shell
+
+undef($config);
+undef($workdir);
+undef($PrintIt);
+undef($samples);
+undef($StartTime);
+undef($EndTime);
+($a,$b) if 0; # keep -w happy
+$usage = <<"E-O-P";
+usage:
+ to watch statistics permanently:
+ $0 [-v[<level>]] [-c <config-file>] [-d <working-dir>]
+ $F [-h <hostname>]
+
+ to get a single print out specify also
+ $F -P[<printer>] [-s<samples>]
+ $F [-S <start-time>] [-E <end-time>]
+ $F [-Y <MaxOffs>] [-y <MinOffs>]
+
+If You like long option names, You can use:
+ -help
+ -c +config
+ -d +directory
+ -h +host
+ -v +verbose[=<level>]
+ -P +printer[=<printer>]
+ -s +samples[=<samples>]
+ -S +starttime
+ -E +endtime
+ -Y +maxy
+ -y +miny
+
+If <printer> contains a '/' (slash character) output is directed to
+a file of this name instead of delivered to a printer.
+E-O-P
+
+;# add directory to look for lr.pl and timelocal.pl (in front of current list)
+unshift(@INC,"/usr/local/xntp/monitoring");
+
+require "lr.pl"; # linear regresion routines
+
+$MJD_1970 = 40587; # from ntp.h (V3)
+$RecordSize = 48; # usually a line fits into 42 bytes
+$MinClip = 1; # clip Y scales with greater range than this
+
+;# largest extension of Y scale from mean value, factor for standart deviation
+$FuzzLow = 2.2; # for side closer to zero
+$FuzzBig = 1.8; # for side farther from zero
+
+require "ctime.pl";
+require "timelocal.pl";
+;# early distributions of ctime.pl had a bug
+$ENV{'TZ'} = 'MET' unless defined $ENV{'TZ'} || $[ > 4.010;
+if (defined(@ctime'MoY))
+{
+ *Month=*ctime'MoY;
+ *Day=*ctime'DoW;
+} # ' re-sync emacs fontification
+else
+{
+ @Month = ('Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec');
+ @Day = ('Sun','Mon','Tue','Wed','Thu','Fri','Sat');
+}
+print @ctime'DoW if 0; # ' re-sync emacs fontification
+
+;# max number of days per month
+@MaxNumDaysPerMonth = (31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
+
+;# config settable parameters
+$delay = 60;
+$srcprefix = "./var\@\$STATHOST/loopstats.";
+$showoffs = 1;
+$showfreq = 1;
+$showcmpl = 0;
+$showoreg = 0;
+$showfreg = 0;
+undef($timebase);
+undef($freqbase);
+undef($cmplscale);
+undef($MaxY);
+undef($MinY);
+$deltaT = 512; # indicate sample data gaps greater than $deltaT seconds
+$verbose = 1;
+
+while($_ = shift(@ARGV))
+{
+ (/^[+-]help$/) && die($usage);
+
+ (/^-c$/ || /^\+config$/) &&
+ (@ARGV || die($usage), $config = shift(@ARGV), next);
+
+ (/^-d$/ || /^\+directory$/) &&
+ (@ARGV || die($usage), $workdir = shift(@ARGV), next);
+
+ (/^-h$/ || /^\+host$/) &&
+ (@ARGV || die($usage), $STATHOST = shift, next);
+
+ (/^-v(\d*)$/ || /^\+verbose=?(\d*)$/) &&
+ ($verbose=($1 eq "") ? 1 : $1, next);
+
+ (/^-P(\S*)$/ || /^\+[Pp]rinter=?(\S*)$/) &&
+ ($PrintIt = $1, $verbose==1 && ($verbose = 0), next);
+
+ (/^-s(\d*)$/ || /^\+samples=?(\d*)$/) &&
+ (($samples = ($1 eq "") ? (shift || die($usage)): $1), next);
+
+ (/^-S$/ || /^\+[Ss]tart[Tt]ime$/) &&
+ (@ARGV || die($usage), $StartTime=&date_time_spec2seconds(shift),next);
+
+ (/^-E$/ || /^\+[Ee]nd[Tt]ime$/) &&
+ (@ARGV || die($usage), $EndTime = &date_time_spec2seconds(shift),next);
+
+ (/^-Y$/ || /^\+[Mm]ax[Yy]$/) &&
+ (@ARGV || die($usage), $MaxY = shift, next);
+
+ (/^-y$/ || /^\+[Mm]in[Yy]$/) &&
+ (@ARGV || die($usage), $MinY = shift, next);
+
+ die("$0: unexpected argument \"$_\"\n$usage");
+}
+
+if (defined($workdir))
+{
+ chdir($workdir) ||
+ die("$0: failed to change working dir to \"$workdir\": $!\n");
+}
+
+$PrintIt = "ps" if defined($PrintIt) && $PrintIt eq "";
+
+if (!defined($PrintIt))
+{
+ defined($samples) &&
+ print "WARNING: your samples value may be shadowed by config file settings\n";
+ defined($StartTime) &&
+ print "WARNING: your StartTime value may be shadowed by config file settings\n";
+ defined($EndTime) &&
+ print "WARNING: your EndTime value may be shadowed by config file settings\n";
+ defined($MaxY) &&
+ print "WARNING: your MaxY value may be shadowed by config file settings\n";
+ defined($MinY) &&
+ print "WARNING: your MinY value may be shadowed by config file settings\n";
+
+ ;# check operating environment
+ ;#
+ ;# gnuplot usually has X support
+ ;# I vaguely remember there was one with sunview support
+ ;#
+ ;# If Your plotcmd can display graphics using some other method
+ ;# (Tek window,..) fix the following test
+ ;# (or may be, just disable it)
+ ;#
+ !(defined($ENV{'DISPLAY'}) || defined($ENV{'WINDOW_PARENT'})) &&
+ die("Need window system to monitor statistics\n");
+}
+
+;# configuration file
+$config = "loopwatch.config" unless defined($config);
+($STATHOST = $config) =~ s!.*loopwatch\.config.([^/\.]*)$!$1!
+ unless defined($STATHOST);
+($STATTAG = $STATHOST) =~ s/^([^\.\*\s]+)\..*$/$1/;
+
+$srcprefix =~ s/\$STATHOST/$STATHOST/g;
+
+;# plot command
+@plotcmd=("gnuplot",
+ '-title', "Ntp loop filter statistics $STATHOST",
+ '-name', "NtpLoopWatch_$STATTAG");
+$tmpfile = "/tmp/ntpstat.$$";
+
+;# other variables
+$doplot = ""; # assembled command for @plotcmd to display plot
+undef($laststat);
+
+;# plot value ranges
+undef($mintime);
+undef($maxtime);
+undef($minoffs);
+undef($maxoffs);
+undef($minfreq);
+undef($maxfreq);
+undef($mincmpl);
+undef($maxcmpl);
+undef($miny);
+undef($maxy);
+
+;# stop operation if plot command dies
+sub sigchld
+{
+ local($pid) = wait;
+ unlink($tmpfile);
+ warn(sprintf("%s: %s died: exit status: %d signal %d\n",
+ $0,
+ (defined($Plotpid) && $Plotpid == $pid)
+ ? "plotcmd" : "unknown child $pid",
+ $?>>8,$? & 0xff)) if $?;
+ exit(1) if $? && defined($Plotpid) && $pid == $Plotpid;
+}
+&sigchld if 0;
+$SIG{'CHLD'} = "sigchld";
+$SIG{'CLD'} = "sigchld";
+
+sub abort
+{
+ unlink($tmpfile);
+ defined($Plotpid) && kill('TERM',$Plotpid);
+ die("$0: received signal SIG$_[$[] - exiting\n");
+}
+&abort if 0; # make -w happy - &abort IS used
+$SIG{'INT'} = $SIG{'HUP'} = $SIG{'QUIT'} = $SIG{'TERM'} = $SIG{'PIPE'} = "abort";
+
+;#
+sub abs
+{
+ ($_[$[] < 0) ? -($_[$[]) : $_[$[];
+}
+
+sub boolval
+{
+ local($v) = ($_[$[]);
+
+ return 1 if ($v eq 'yes') || ($v eq 'y');
+ return 1 if ($v =~ /^[0-9]*$/) && ($v != 0);
+ return 0;
+}
+
+;#####################
+;# start of real work
+
+print "starting plot command (" . join(" ",@plotcmd) . ")\n" if $verbose > 1;
+
+$Plotpid = open(PLOT,"|-");
+select((select(PLOT),$|=1)[$[]); # make PLOT line bufferd
+
+defined($Plotpid) ||
+ die("$0: failed to start plot command: $!\n");
+
+unless ($Plotpid)
+{
+ ;# child == plot command
+ close(STDOUT);
+ open(STDOUT,">&STDERR") ||
+ die("$0: failed to redirect STDOUT of plot command: $!\n");
+
+ print STDOUT "plot command running as $$\n";
+
+ exec @plotcmd;
+ die("$0: failed to exec (@plotcmd): $!\n");
+ exit(1); # in case ...
+}
+
+sub read_config
+{
+ local($at) = (stat($config))[$[+9];
+ local($_,$c,$v);
+
+ (undef($laststat),(print("stat $config failed: $!\n")),return) if ! defined($at);
+ return if (defined($laststat) && ($laststat == $at));
+ $laststat = $at;
+
+ print "reading configuration from \"$config\"\n" if $verbose;
+
+ open(CF,"<$config") ||
+ (warn("$0: failed to read \"$config\" - using old settings ($!)\n"),
+ return);
+ while(<CF>)
+ {
+ chop;
+ s/^([^\#]*[^\#\s]?)\s*\#.*$//;
+ next if /^\s*$/;
+
+ s/^\s*([^=\s]*)\s*=\s*(.*\S)\s*$/$1=$2/;
+
+ ($c,$v) = split(/=/,$_,2);
+ print "processing \"$c=$v\"\n" if $verbose > 3;
+ ($c eq "delay") && ($delay = $v,1) && next;
+ ($c eq 'samples') && (!defined($PrintIt) || !defined($samples)) &&
+ ($samples = $v,1) && next;
+ ($c eq 'srcprefix') && (($srcprefix=$v)=~s/\$STATHOST/$STATHOST/g,1)
+ && next;
+ ($c eq 'showoffs') &&
+ ($showoffs = boolval($v),1) && next;
+ ($c eq 'showfreq') &&
+ ($showfreq = boolval($v),1) && next;
+ ($c eq 'showcmpl') &&
+ ($showcmpl = boolval($v),1) && next;
+ ($c eq 'showoreg') &&
+ ($showoreg = boolval($v),1) && next;
+ ($c eq 'showfreg') &&
+ ($showfreg = boolval($v),1) && next;
+
+ ($c eq 'exit') && (unlink($tmpfile),die("$0: exit by config request\n"));
+
+ ($c eq 'freqbase' ||
+ $c eq 'cmplscale') &&
+ do {
+ if (! defined($v) || $v eq "" || $v eq 'dynamic')
+ {
+ eval "undef(\$$c);";
+ }
+ else
+ {
+ eval "\$$c = \$v;";
+ }
+ next;
+ };
+ ($c eq 'timebase') &&
+ do {
+ if (! defined($v) || $v eq "" || $v eq "dynamic")
+ {
+ undef($timebase);
+ }
+ else
+ {
+ $timebase=&date_time_spec2seconds($v);
+ }
+ };
+ ($c eq 'EndTime') &&
+ do {
+ next if defined($EndTime) && defined($PrintIt);
+ if (! defined($v) || $v eq "" || $v eq "none")
+ {
+ undef($EndTime);
+ }
+ else
+ {
+ $EndTime=&date_time_spec2seconds($v);
+ }
+ };
+ ($c eq 'StartTime') &&
+ do {
+ next if defined($StartTime) && defined($PrintIt);
+ if (! defined($v) || $v eq "" || $v eq "none")
+ {
+ undef($StartTime);
+ }
+ else
+ {
+ $StartTime=&date_time_spec2seconds($v);
+ }
+ };
+
+ ($c eq 'MaxY') &&
+ do {
+ next if defined($MaxY) && defined($PrintIt);
+ if (! defined($v) || $v eq "" || $v eq "none")
+ {
+ undef($MaxY);
+ }
+ else
+ {
+ $MaxY=$v;
+ }
+ };
+
+ ($c eq 'MinY') &&
+ do {
+ next if defined($MinY) && defined($PrintIt);
+ if (! defined($v) || $v eq "" || $v eq "none")
+ {
+ undef($MinY);
+ }
+ else
+ {
+ $MinY=$v;
+ }
+ };
+
+ ($c eq 'deltaT') &&
+ do {
+ if (!defined($v) || $v eq "")
+ {
+ undef($deltaT);
+ }
+ else
+ {
+ $deltaT = $v;
+ }
+ next;
+ };
+ ($c eq 'verbose') && ! defined($PrintIt) &&
+ do {
+ if (!defined($v) || $v == 0)
+ {
+ $verbose = 0;
+ }
+ else
+ {
+ $verbose = $v;
+ }
+ next;
+ };
+ ;# otherwise: silently ignore unrecognized config line
+ }
+ close(CF);
+ ;# set show defaults when nothing selected
+ $showoffs = $showfreq = $showcmpl = 1
+ unless $showoffs || $showfreq || $showcmpl;
+ if ($verbose > 3)
+ {
+ print "new configuration:\n";
+ print " delay\t= $delay\n";
+ print " samples\t= $samples\n";
+ print " srcprefix\t= $srcprefix\n";
+ print " showoffs\t= $showoffs\n";
+ print " showfreq\t= $showfreq\n";
+ print " showcmpl\t= $showcmpl\n";
+ print " showoreg\t= $showoreg\n";
+ print " showfreg\t= $showfreg\n";
+ printf " timebase\t= %s",defined($timebase)?&ctime($timebase):"dynamic\n";
+ printf " freqbase\t= %s\n",defined($freqbase) ?"$freqbase":"dynamic";
+ printf " cmplscale\t= %s\n",defined($cmplscale)?"$cmplscale":"dynamic";
+ printf " StartTime\t= %s",defined($StartTime)?&ctime($StartTime):"none\n";
+ printf " EndTime\t= %s", defined($EndTime) ? &ctime($EndTime):"none\n";
+ printf " MaxY\t= %s",defined($MaxY)? $MaxY :"none\n";
+ printf " MinY\t= %s",defined($MinY)? $MinY :"none\n";
+ print " verbose\t= $verbose\n";
+ }
+print "configuration file read\n" if $verbose > 2;
+}
+
+sub make_doplot
+{
+ local($c) = ("");
+ local($fmt)
+ = ("%s \"%s\" using 1:%d title '%s <%lf %lf> %6s' with lines");
+ local($regfmt)
+ = ("%s ((%lf * x) + %lf) title 'lin. approx. %s (%f t[h]) %s %f <%f> %6s' with lines");
+
+ $doplot = " set title 'NTP loopfilter statistics for $STATHOST " .
+ "(last $LastCnt samples from $srcprefix*)'\n";
+
+ local($xts,$xte,$i,$t);
+
+ local($s,$c) = ("");
+
+ ;# number of integral seconds to get at least 12 tic marks on x axis
+ $t = int(($maxtime - $mintime) / 12 + 0.5);
+ $t = 1 unless $t; # prevent $t to be zero
+ foreach $i (30,
+ 60,5*60,15*60,30*60,
+ 60*60,2*60*60,6*60*60,12*60*60,
+ 24*60*60,48*60*60)
+ {
+ last if $t < $i;
+ $t = $t - ($t % $i);
+ }
+ print "time label resolution: $t seconds\n" if $verbose > 1;
+
+ ;# make gnuplot use wall clock time labels instead of NTP seconds
+ for ($c="", $i = $mintime - ($mintime % $t);
+ $i <= $maxtime + $t;
+ $i += $t, $c=",")
+ {
+ $s .= $c;
+ ((int($i / $t) % 2) &&
+ ($s .= sprintf("'' %lf",($i - $LastTimeBase)/3600))) ||
+ (($t <= 60) &&
+ ($s .= sprintf("'%d:%02d:%02d' %lf",
+ (localtime($i))[$[+2,$[+1,$[+0],
+ ($i - $LastTimeBase)/3600)))
+ || (($t <= 2*60*60) &&
+ ($s .= sprintf("'%d:%02d' %lf",
+ (localtime($i))[$[+2,$[+1],
+ ($i - $LastTimeBase)/3600)))
+ || (($t <= 12*60*60) &&
+ ($s .= sprintf("'%s %d:00' %lf",
+ $Day[(localtime($i))[$[+6]],
+ (localtime($i))[$[+2],
+ ($i - $LastTimeBase)/3600)))
+ || ($s .= sprintf("'%d.%d-%d:00' %lf",
+ (localtime($i))[$[+3,$[+4,$[+2],
+ ($i - $LastTimeBase)/3600));
+ }
+ $doplot .= "set xtics ($s)\n";
+
+ chop($xts = &ctime($mintime));
+ chop($xte = &ctime($maxtime));
+ $doplot .= "set xlabel 'Start: $xts -- Time Scale -- End: $xte'\n";
+ $doplot .= "set yrange [" ;
+ $doplot .= defined($MinY) ? sprintf("%lf", $MinY) : $miny;
+ $doplot .= ':';
+ $doplot .= defined($MaxY) ? sprintf("%lf", $MaxY) : $maxy;
+ $doplot .= "]\n";
+
+ $doplot .= " plot";
+ $c = "";
+ $showoffs &&
+ ($doplot .= sprintf($fmt,$c,$tmpfile,2,
+ "offset",
+ $minoffs,$maxoffs,
+ "[ms]"),
+ $c = ",");
+ $LastCmplScale = 1 if ! defined($LastCmplScale);
+ $showcmpl &&
+ ($doplot .= sprintf($fmt,$c,$tmpfile,4,
+ "compliance" .
+ (&abs($LastCmplScale) > 1
+ ? " / $LastCmplScale"
+ : (&abs($LastCmplScale) == 1 ? "" : " * ".(1/$LastCmplScale))),
+ $mincmpl/$LastCmplScale,$maxcmpl/$LastCmplScale,
+ ""),
+ $c = ",");
+ $LastFreqBase = 0 if ! defined($LastFreqBase);
+ $LastFreqBaseString = "?" if ! defined($LastFreqBaseString);
+ $FreqScale = 1 if ! defined($FreqScale);
+ $FreqScaleInv = 1 if ! defined($FreqScaleInv);
+ $showfreq &&
+ ($doplot .= sprintf($fmt,$c,$tmpfile,3,
+ "frequency" .
+ ($LastFreqBase > 0
+ ? " - $LastFreqBaseString"
+ : ($LastFreqBase == 0 ? "" : " + $LastFreqBaseString")),
+ $minfreq * $FreqScale - $LastFreqBase,
+ $maxfreq * $FreqScale - $LastFreqBase,
+ "[${FreqScaleInv}ppm]"),
+ $c = ",");
+ $showoreg && $showoffs &&
+ ($doplot .= sprintf($regfmt, $c,
+ &lr_B('offs'),&lr_A('offs'),
+ "offset ",
+ &lr_B('offs'),
+ ((&lr_A('offs')) < 0 ? '-' : '+'),
+ &abs(&lr_A('offs')), &lr_r('offs'),
+ "[ms]"),
+ $c = ",");
+ $showfreg && $showfreq &&
+ ($doplot .= sprintf($regfmt, $c,
+ &lr_B('freq') * $FreqScale,
+ (&lr_A('freq') + $minfreq) * $FreqScale - $LastFreqBase,
+ "frequency",
+ &lr_B('freq') * $FreqScale,
+ ((&lr_A('freq') + $minfreq) * $FreqScale - $LastFreqBase) < 0 ? '-' : '+',
+ &abs((&lr_A('freq') + $minfreq) * $FreqScale - $LastFreqBase),
+ &lr_r('freq'),
+ "[${FreqScaleInv}ppm]"),
+ $c = ",");
+ $doplot .= "\n";
+}
+
+%F_key = ();
+%F_name = ();
+%F_size = ();
+%F_mtime = ();
+%F_first = ();
+%F_last = ();
+
+sub genfile
+{
+ local($cnt,$in,$out,@fpos) = @_;
+
+ local(@F,@t,$t,$lastT) = ();
+ local(@break,@time,@offs,@freq,@cmpl,@loffset,@filekey) = ();
+ local($lm,$l,@f);
+
+ local($sdir,$sname);
+
+ ;# allocate some storage for the tables
+ ;# otherwise realloc may get into troubles
+ if (defined($StartTime) && defined($EndTime))
+ {
+ $l = ($EndTime-$StartTime) -$[+1 +1; # worst case: 1 sample per second
+ }
+ else
+ {
+ $l = $cnt + 10;
+ }
+ print "preextending arrays to $l entries\n" if $verbose > 2;
+ $#break = $l; for ($i=$[; $i<=$l;$i++) { $break[$i] = 0; }
+ $#time = $l; for ($i=$[; $i<=$l;$i++) { $time[$i] = 0; }
+ $#offs = $l; for ($i=$[; $i<=$l;$i++) { $offs[$i] = 0; }
+ $#freq = $l; for ($i=$[; $i<=$l;$i++) { $freq[$i] = 0; }
+ $#cmpl = $l; for ($i=$[; $i<=$l;$i++) { $cmpl[$i] = 0; }
+ $#loffset = $l; for ($i=$[; $i<=$l;$i++) { $loffset[$i] = 0; }
+ $#filekey = $l; for ($i=$[; $i<=$l;$i++) { $filekey[$i] = 0; }
+ ;# now reduce size again
+ $#break = $[ - 1;
+ $#time = $[ - 1;
+ $#offs = $[ - 1;
+ $#freq = $[ - 1;
+ $#cmpl = $[ - 1;
+ $#loffset = $[ - 1;
+ $#filekey = $[ - 1;
+ print "memory allocation ready\n" if $verbose > 2;
+ sleep(3) if $verbose > 1;
+
+ $fpos[$[] = '' if !defined($fpos[$[]);
+
+ if (index($in,"/") < $[)
+ {
+ $sdir = ".";
+ $sname = $in;
+ }
+ else
+ {
+ ($sdir,$sname) = ($in =~ m!^(.*)/([^/]*)!);
+ $sname = "" unless defined($sname);
+ }
+
+ $Ltime = -1 if ! defined($Ltime);
+ if (!defined($Lsdir) || $Lsdir ne $sdir || $Ltime != (stat($sdir))[$[+9] ||
+ grep($F_mtime{$_} != (stat($F_name{$_}))[$[+9], @F_files))
+
+ {
+ print "rescanning directory \"$sdir\" for files \"$sname*\"\n"
+ if $verbose > 1;
+
+ ;# rescan directory on changes
+ $Lsdir = $sdir;
+ $Ltime = (stat($sdir))[$[+9];
+ </X{> if 0; # dummy line - calm down my formatter
+ local(@newfiles) = < ${in}*[0-9] >;
+ local($st_dev,$st_ino,$st_mtime,$st_size,$name,$key,$modified);
+
+ foreach $name (@newfiles)
+ {
+ ($st_dev,$st_ino,$st_size,$st_mtime) =
+ (stat($name))[$[,$[+1,$[+7,$[+9];
+ $modified = 0;
+ $key = sprintf("%lx|%lu", $st_dev, $st_ino);
+
+ print "candidate file \"$name\"",
+ (defined($st_dev) ? "" : " failed: $!"),"\n"
+ if $verbose > 2;
+
+ if (! defined($F_key{$name}) || $F_key{$name} ne $key)
+ {
+ $F_key{$name} = $key;
+ $modified++;
+ }
+ if (!defined($F_name{$key}) || $F_name{$key} ne $name)
+ {
+ $F_name{$key} = $name;
+ $modified++;
+ }
+ if (!defined($F_size{$key}) || $F_size{$key} != $st_size)
+ {
+ $F_size{$key} = $st_size;
+ $modified++;
+ }
+ if (!defined($F_mtime{$key}) || $F_mtime{$key} != $st_mtime)
+ {
+ $F_mtime{$key} = $st_mtime;
+ $modified++;
+ }
+ if ($modified)
+ {
+ print "new data \"$name\" key: $key;\n" if $verbose > 1;
+ print " size: $st_size; mtime: $st_mtime;\n"
+ if $verbose > 1;
+ $F_last{$key} = $F_first{$key} = $st_mtime;
+ $F_first{$key}--; # prevent zero divide later on
+ ;# now compute derivated attributes
+ open(IN, "<$name") ||
+ do {
+ warn "$0: failed to open \"$name\": $!";
+ next;
+ };
+
+ while(<IN>)
+ {
+ @F = split;
+ next if @F < 5;
+ next if $F[$[] eq "";
+ $t = ($F[$[] - $MJD_1970) * 24 * 60 * 60;
+ $t += $F[$[+1];
+ $F_first{$key} = $t;
+ print "\tfound first entry: $t ",&ctime($t)
+ if $verbose > 4;
+ last;
+ }
+ seek(IN,
+ ($st_size > 4*$RecordSize) ? $st_size - 4*$RecordSize : 0,
+ 0);
+ while(<IN>)
+ {
+ @F = split;
+ next if @F < 5;
+ next if $F[$[] eq "";
+ $t = ($F[$[] - $MJD_1970) * 24 * 60 * 60;
+ $t += $F[$[+1];
+ $F_last{$key} = $t;
+ $_ = <IN>;
+ print "\tfound last entry: $t ", &ctime($t)
+ if $verbose > 4 && ! defined($_);
+ last unless defined($_);
+ redo;
+ ;# Ok, calm down...
+ ;# using $_ = <IN> in conjunction with redo
+ ;# is semantically equivalent to the while loop, but
+ ;# I needed a one line look ahead and this solution
+ ;# was what I thought of first
+ ;# and.. If you do not like it dont look
+ }
+ close(IN);
+ print(" first: ",$F_first{$key},
+ " last: ",$F_last{$key},"\n") if $verbose > 1;
+ }
+ }
+ ;# now reclaim memory used for files no longer referenced ...
+ local(%Names);
+ grep($Names{$_} = 1,@newfiles);
+ foreach (keys %F_key)
+ {
+ next if defined($Names{$_});
+ delete $F_key{$_};
+ $verbose > 2 && print "no longer referenced: \"$_\"\n";
+ }
+ %Names = ();
+
+ grep($Names{$_} = 1,values(%F_key));
+ foreach (keys %F_name)
+ {
+ next if defined($Names{$_});
+ delete $F_name{$_};
+ $verbose > 2 && print "unref name($_)= $F_name{$_}\n";
+ }
+ foreach (keys %F_size)
+ {
+ next if defined($Names{$_});
+ delete $F_size{$_};
+ $verbose > 2 && print "unref size($_)\n";
+ }
+ foreach (keys %F_mtime)
+ {
+ next if defined($Names{$_});
+ delete $F_mtime{$_};
+ $verbose > 2 && print "unref mtime($_)\n";
+ }
+ foreach (keys %F_first)
+ {
+ next if defined($Names{$_});
+ delete $F_first{$_};
+ $verbose > 2 && print "unref first($_)\n";
+ }
+ foreach (keys %F_last)
+ {
+ next if defined($Names{$_});
+ delete $F_last{$_};
+ $verbose > 2 && print "unref last($_)\n";
+ }
+ ;# create list sorted by time
+ @F_files = sort {$F_first{$a} <=> $F_first{$b}; } keys(%F_name);
+ if ($verbose > 1)
+ {
+ print "Resulting file list:\n";
+ foreach (@F_files)
+ {
+ print "\t$_\t$F_name{$_}\n";
+ }
+ }
+ }
+
+ printf("processing %s; output \"$out\" (%d input files)\n",
+ ((defined($StartTime) && defined($EndTime))
+ ? "time range"
+ : (defined($StartTime) ? "$cnt samples from StartTime" :
+ (defined($EndTime) ? "$cnt samples to EndTime" :
+ "last $cnt samples"))),
+ scalar(@F_files))
+ if $verbose > 1;
+
+ ;# open output file - will be input for plotcmd
+ open(OUT,">$out") ||
+ do {
+ warn("$0: cannot create \"$out\": $!\n");
+ };
+
+ @f = @F_files;
+ if (defined($StartTime))
+ {
+ while (@f && ($F_last{$f[$[]} < $StartTime))
+ {
+ print("shifting ", $F_name{$f[$[]},
+ " last: ", $F_last{$f[$[]},
+ " < StartTime: $StartTime\n")
+ if $verbose > 3;
+ shift(@f);
+ }
+
+
+ }
+ if (defined($EndTime))
+ {
+ while (@f && ($F_first{$f[$#f]} > $EndTime))
+ {
+ print("popping ", $F_name{$f[$#f]},
+ " first: ", $F_first{$f[$#f]},
+ " > EndTime: $EndTime\n")
+ if $verbose > 3;
+ pop(@f);
+ }
+ }
+
+ if (@f)
+ {
+ if (defined($StartTime))
+ {
+ print "guess start according to StartTime ($StartTime)\n"
+ if $verbose > 3;
+
+ if ($fpos[$[] eq 'start')
+ {
+ if (grep($_ eq $fpos[$[+1],@f))
+ {
+ shift(@f) while @f && $f[$[] ne $fpos[$[+1];
+ }
+ else
+ {
+ @fpos = ('start', $f[$[], undef);
+ }
+ }
+ else
+ {
+ @fpos = ('start' , $f[$[], undef);
+ }
+
+ if (!defined($fpos[$[+2]))
+ {
+ if ($StartTime <= $F_first{$f[$[]})
+ {
+ $fpos[$[+2] = 0;
+ }
+ else
+ {
+ $fpos[$[+2] =
+ int($F_size{$f[$[]} *
+ (($StartTime - $F_first{$f[$[]})/
+ ($F_last{$f[$[]} - $F_first{$f[$[]})));
+ $fpos[$[+2] = ($fpos[$[+2] <= 2 * $RecordSize)
+ ? 0 : $fpos[$[+2] - 2 * $RecordSize;
+ ;# anyway as the data may contain "time holes"
+ ;# our heuristics may baldly fail
+ ;# so just start at 0
+ $fpos[$[+2] = 0;
+ }
+ }
+ }
+ elsif (defined($EndTime))
+ {
+ print "guess starting point according to EndTime ($EndTime)\n"
+ if $verbose > 3;
+
+ if ($fpos[$[] eq 'end')
+ {
+ if (grep($_ eq $fpos[$[+1],@f))
+ {
+ shift(@f) while @f && $f[$[] ne $fpos[$[+1];
+ }
+ else
+ {
+ @fpos = ('end', $f[$[], undef);
+ }
+ }
+ else
+ {
+ @fpos = ('end', $f[$[], undef);
+ }
+
+ if (!defined($fpos[$[+2]))
+ {
+ local(@x) = reverse(@f);
+ local($s,$c) = (0,$cnt);
+ if ($EndTime < $F_last{$x[$[]})
+ {
+ ;# last file will only be used partially
+ $s = int($F_size{$x[$[]} *
+ (($EndTime - $F_first{$x[$[]}) /
+ ($F_last{$x[$[]} - $F_first{$x[$[]})));
+ $s = int($s/$RecordSize);
+ $c -= $s - 1;
+ if ($c <= 0)
+ {
+ ;# start is in the same file
+ $fpos[$[+1] = $x[$[];
+ $fpos[$[+2] = ($c >=-2) ? 0 : (-$c - 2) * $RecordSize;
+ shift(@f) while @f && ($f[$[] ne $x[$[]);
+ }
+ else
+ {
+ shift(@x);
+ }
+ }
+
+ if (!defined($fpos[$[+2]))
+ {
+ local($_);
+ while($_ = shift(@x))
+ {
+ $s = int($F_size{$_}/$RecordSize);
+ $c -= $s - 1;
+ if ($c <= 0)
+ {
+ $fpos[$[+1] = $_;
+ $fpos[$[+2] = ($c>-2) ? 0 : (-$c - 2) * $RecordSize;
+ shift(@f) while @f && ($f[$[] ne $_);
+ last;
+ }
+ }
+ }
+ }
+ }
+ else
+ {
+ print "guessing starting point according to count ($cnt)\n"
+ if $verbose > 3;
+ ;# guess offset to get last available $cnt samples
+ if ($fpos[$[] eq 'cnt')
+ {
+ if (grep($_ eq $fpos[$[+1],@f))
+ {
+ print "old positioning applies\n" if $verbose > 3;
+ shift(@f) while @f && $f[$[] ne $fpos[$[+1];
+ }
+ else
+ {
+ @fpos = ('cnt', $f[$[], undef);
+ }
+ }
+ else
+ {
+ @fpos = ('cnt', $f[$[], undef);
+ }
+
+ if (!defined($fpos[$[+2]))
+ {
+ local(@x) = reverse(@f);
+ local($s,$c) = (0,$cnt);
+
+ local($_);
+ while($_ = shift(@x))
+ {
+ print "examing \"$_\" $c samples still needed\n"
+ if $verbose > 4;
+ $s = int($F_size{$_}/$RecordSize);
+ $c -= $s - 1;
+ if ($c <= 0)
+ {
+ $fpos[$[+1] = $_;
+ $fpos[$[+2] = ($c>-2) ? 0 : (-$c - 2) * $RecordSize;
+ shift(@f) while @f && ($f[$[] ne $_);
+ last;
+ }
+ }
+ if (!defined($fpos[$[+2]))
+ {
+ print "no starting point yet - using start of data\n"
+ if $verbose > 2;
+ $fpos[$[+2] = 0;
+ }
+ }
+ }
+ }
+ print "Ooops, no suitable input file ??\n"
+ if $verbose > 1 && @f <= 0;
+
+ printf("Starting at (%s) \"%s\" offset %ld using %d files\n",
+ $fpos[$[+1],
+ $F_name{$fpos[$[+1]},
+ $fpos[$[+2],
+ scalar(@f))
+ if $verbose > 2;
+
+ $lm = 1;
+ $l = 0;
+ foreach $key (@f)
+ {
+ $file = $F_name{$key};
+ print "processing file \"$file\"\n" if $verbose > 2;
+
+ open(IN,"<$file") ||
+ (warn("$0: cannot read \"$file\": $!\n"), next);
+
+ ;# try to seek to a position nearer to the start of the interesting lines
+ ;# should always affect only first item in @f
+ ($key eq $fpos[$[+1]) &&
+ (($verbose > 1) &&
+ print("Seeking to offset $fpos[$[+2]\n"),
+ seek(IN,$fpos[$[+2],0) ||
+ warn("$0: seek(\"$F_name{$key}\" failed: $|\n"));
+
+ while(<IN>)
+ {
+ $l++;
+ ($verbose > 3) &&
+ (($l % $lm) == 0 && print("\t$l lines read\n") &&
+ (($l == 2) && ($lm = 10) ||
+ ($l == 100) && ($lm = 100) ||
+ ($l == 500) && ($lm = 500) ||
+ ($l == 1000) && ($lm = 1000) ||
+ ($l == 5000) && ($lm = 5000) ||
+ ($l == 10000) && ($lm = 10000)));
+
+ @F = split;
+
+ next if @F < 6; # no valid input line is this short
+ next if $F[$[] eq "";
+ next if ($F[$[] !~ /^\d+$/);
+ ($F[$[] !~ /^\d+$/) && # A 'never should have happend' error
+ die("$0: unexpected input line: >$_<\n");
+
+ ;# modified Julian to UNIX epoch
+ $t = ($F[$[] - $MJD_1970) * 24 * 60 * 60;
+ $t += $F[$[+1]; # add seconds + fraction
+
+ ;# multiply offset by 1000 to get ms - try to avoid float op
+ (($F[$[+2] =~ s/(\d*)\.(\d{3})(\d*)/$1$2.$3/) &&
+ $F[$[+2] =~ s/0+([\d\.])/($1 eq '.') ? '0.' : $1/e) # strip leading zeros
+ || ($F[$[+2] *= 1000);
+
+
+ ;# skip samples out of specified time range
+ next if (defined($StartTime) && $StartTime > $t);
+ next if (defined($EndTime) && $EndTime < $t);
+
+ next if defined($lastT) && $t < $lastT; # backward in time ??
+
+ push(@offs,$F[$[+2]);
+ push(@freq,$F[$[+3] * (2**20/10**6));
+ push(@cmpl,$F[$[+5]);
+
+ push(@break, (defined($lastT) && ($t - $lastT > $deltaT)));
+ $lastT = $t;
+ push(@time,$t);
+ push(@loffset, tell(IN) - length($_));
+ push(@filekey, $key);
+
+ shift(@break),shift(@time),shift(@offs),
+ shift(@freq), shift(@cmpl),shift(@loffset),
+ shift(@filekey)
+ if @time > $cnt &&
+ ! (defined($StartTime) && defined($EndTime));
+
+ last if @time >= $cnt && defined($StartTime) && !defined($EndTime);
+ }
+ close(IN);
+ last if @time >= $cnt && defined($StartTime) && !defined($EndTime);
+ }
+ print "input scanned ($l lines/",scalar(@time)," samples)\n"
+ if $verbose > 1;
+
+ &lr_init('offs');
+ &lr_init('freq');
+
+ if (@time)
+ {
+ local($_,@F);
+
+ local($timebase) unless defined($timebase);
+ local($freqbase) unless defined($freqbase);
+ local($cmplscale) unless defined($cmplscale);
+
+ undef $mintime;
+ undef $maxtime;
+ undef $minoffs;
+ undef $maxoffs;
+ undef $minfreq;
+ undef $maxfreq;
+ undef $mincmpl;
+ undef $maxcmpl;
+ undef $miny;
+ undef $maxy ;
+
+ print "computing ranges\n" if $verbose > 2;
+
+ $LastCnt = @time;
+
+ ;# @time is in ascending order (;-)
+ $mintime = $time[$[];
+ $maxtime = $time[$#time];
+ unless (defined($timebase))
+ {
+ local($time,@X) = (time);
+ @X = localtime($time);
+
+ ;# compute today 00:00:00
+ $timebase = $time - ((($X[$[+2]*60)+$X[$[+1])*60+$X[$[]);
+
+ }
+ $LastTimeBase = $timebase;
+
+ if ($showoffs)
+ {
+ local($i,$m,$f);
+
+ $minoffs = &min(@offs);
+ $maxoffs = &max(@offs);
+
+ ;# I know, it is not perl style using indices to access arrays,
+ ;# but I have to proccess two arrays in sync, non-destructively
+ ;# (otherwise a (shift(@a1),shift(a2)) would do),
+ ;# I dont like to make copies of these arrays as they may be huge
+ $i = $[;
+ &lr_sample(($time[$i]-$timebase)/3600,$offs[$i],'offs'),$i++
+ while $i <= $#time;
+
+ ($minoffs == $maxoffs) && ($minoffs -= 0.1,$maxoffs += 0.1);
+
+ $i = &lr_sigma('offs');
+ $m = &lr_mean('offs');
+
+ print "mean offset: $m sigma: $i\n" if $verbose > 2;
+
+ if (($maxoffs - $minoffs) > $MinClip)
+ {
+ $f = (&abs($minoffs) < &abs($maxoffs)) ? $FuzzLow : $FuzzBig;
+ $miny = (($m - $minoffs) <= ($f * $i))
+ ? $minoffs : ($m - $f * $i);
+ $f = ($f == $FuzzLow) ? $FuzzBig : $FuzzLow;
+ $maxy = (($maxoffs - $m) <= ($f * $i))
+ ? $maxoffs : ($m + $f * $i);
+ }
+ else
+ {
+ $miny = $minoffs;
+ $maxy = $maxoffs;
+ }
+ ($maxy-$miny) == 0 &&
+ (($maxy,$miny)
+ = (($maxoffs - $minoffs) > 0)
+ ? ($maxoffs,$minoffs) : ($MinClip,-$MinClip));
+
+ $maxy = $MaxY if defined($MaxY) && $MaxY < $maxy;
+ $miny = $MinY if defined($MinY) && $MinY > $miny;
+
+ print "offset min clipped from $minoffs to $miny\n"
+ if $verbose > 2 && $minoffs != $miny;
+ print "offset max clipped from $maxoffs to $maxy\n"
+ if $verbose > 2 && $maxoffs != $maxy;
+ }
+
+ if ($showfreq)
+ {
+ local($i,$m);
+
+ $minfreq = &min(@freq);
+ $maxfreq = &max(@freq);
+
+ $i = $[;
+ &lr_sample(($time[$i]-$timebase)/3600,$freq[$i]-$minfreq,'freq'),
+ $i++
+ while $i <= $#time;
+
+ $i = &lr_sigma('freq');
+ $m = &lr_mean('freq') + $minfreq;
+
+ print "mean frequency: $m sigma: $i\n" if $verbose > 2;
+
+ if (defined($maxy))
+ {
+ local($s) =
+ ($maxfreq - $minfreq)
+ ? ($maxy - $miny) / ($maxfreq - $minfreq) : 1;
+
+ if (defined($freqbase))
+ {
+ $FreqScale = 1;
+ $FreqScaleInv = "";
+ }
+ else
+ {
+ $FreqScale = 1;
+ $FreqScale = 10 ** int(log($s)/log(10) - 0.9999);
+ $FreqScaleInv =
+ ("$FreqScale" =~ /^10(0*)$/) ? "0.${1}1" :
+ ($FreqScale == 1 ? "" : (1/$FreqScale));
+
+ $freqbase = ($maxfreq + $minfreq)/ 2 * $FreqScale; #$m * $FreqScale;
+ $freqbase -= ($maxy + $miny) / 2; #&lr_mean('offs');
+
+ ;# round resulting freqbase
+ ;# to precision of min max difference
+ $s = -12;
+ $s = int(log(($maxfreq-$minfreq)*$FreqScale)/log(10))-1
+ unless ($maxfreq-$minfreq) < 1e-12;
+ $s = 10 ** $s;
+ $freqbase = int($freqbase / $s) * $s;
+ }
+ }
+ else
+ {
+ $FreqScale = 1;
+ $FreqScaleInv = "";
+ $freqbase = $m unless defined($freqbase);
+ if (($maxfreq - $minfreq) > $MinClip)
+ {
+ $f = (&abs($minfreq) < &abs($maxfreq))
+ ? $FuzzLow : $FuzzBig;
+ $miny = (($freqbase - $minfreq) <= ($f * $i))
+ ? ($minfreq-$freqbase) : (- $f * $i);
+ $f = ($f == $FuzzLow) ? $FuzzBig : $FuzzLow;
+ $maxy = (($maxfreq - $freqbase) <= ($f * $i))
+ ? ($maxfreq-$freqbase) : ($f * $i);
+ }
+ else
+ {
+ $miny = $minfreq - $freqbase;
+ $maxy = $maxfreq - $freqbase;
+ }
+ ($maxy - $miny) == 0 &&
+ (($maxy,$miny) =
+ (($maxfreq - $minfreq) > 0)
+ ? ($maxfreq-$freqbase,$minfreq-$freqbase) : (0.5,-0.5));
+
+ $maxy = $MaxY if defined($MaxY) && $MaxY < $maxy;
+ $miny = $MinY if defined($MinY) && $MinY > $miny;
+
+ print("frequency min clipped from ",$minfreq-$freqbase,
+ " to $miny\n")
+ if $verbose > 2 && $miny != ($minfreq - $freqbase);
+ print("frequency max clipped from ",$maxfreq-$freqbase,
+ " to $maxy\n")
+ if $verbose > 2 && $maxy != ($maxfreq - $freqbase);
+ }
+ $LastFreqBaseString =
+ sprintf("%g",$freqbase >= 0 ? $freqbase : -$freqbase);
+ $LastFreqBase = $freqbase;
+ print "LastFreqBaseString now \"$LastFreqBaseString\"\n"
+ if $verbose > 5;
+ }
+ else
+ {
+ $FreqScale = 1;
+ $FreqScaleInv = "";
+ $LastFreqBase = 0;
+ $LastFreqBaseString = "";
+ }
+
+ if ($showcmpl)
+ {
+ $mincmpl = &min(@cmpl);
+ $maxcmpl = &max(@cmpl);
+
+ if (!defined($cmplscale))
+ {
+ if (defined($maxy))
+ {
+ local($cmp)
+ = (&abs($miny) > &abs($maxy)) ? &abs($miny) : $maxy;
+ $cmplscale = $cmp == $maxy ? 1 : -1;
+
+ foreach (0.01, 0.02, 0.05,
+ 0.1, 0.2, 0.25, 0.4, 0.5,
+ 1, 2, 4, 5,
+ 10, 20, 25, 50,
+ 100, 200, 250, 500, 1000)
+ {
+ $cmplscale *= $_, last if $maxcmpl/$_ <= $cmp;
+ }
+ }
+ else
+ {
+ $cmplscale = 1;
+ $miny = $mincmpl ? 0 : -$MinClip;
+ $maxy = $maxcmpl+$MinClip;
+ }
+ }
+ $LastCmplScale = $cmplscale;
+ }
+ else
+ {
+ $LastCmplScale = 1;
+ }
+
+ print "creating plot command input file\n" if $verbose > 2;
+
+
+ print OUT ("# preprocessed NTP statistics file for $STATHOST\n");
+ print OUT ("# timebase is: ",&ctime($LastTimeBase))
+ if defined($LastTimeBase);
+ print OUT ("# frequency is offset by ",
+ ($LastFreqBase >= 0 ? "+" : "-"),
+ "$LastFreqBaseString [${FreqScaleInv}ppm]\n");
+ print OUT ("# compliance is scaled by $LastCmplScale\n");
+ print OUT ("# time [h]\toffset [ms]\tfrequency [${FreqScaleInv}ppm]\tcompliance\n");
+
+ printf OUT ("%s%lf\t%lf\t%lf\t%lf\n",
+ (shift(@break) ? "\n" : ""),
+ (shift(@time) - $LastTimeBase)/3600,
+ shift(@offs),
+ shift(@freq) * $FreqScale - $LastFreqBase,
+ shift(@cmpl) / $LastCmplScale)
+ while(@time);
+ }
+ else
+ {
+ ;# prevent plotcmd from processing empty file
+ print "Creating plot command dummy...\n" if $verbose > 2;
+ print OUT "# dummy samples\n0 1 2 3\n1 1 2 3\n";
+ &lr_sample(0,1,'offs');
+ &lr_sample(1,1,'offs');
+ &lr_sample(0,2,'freq');
+ &lr_sample(1,2,'freq');
+ @time = (0, 1); $maxtime = 1; $mintime = 0;
+ @offs = (1, 1); $maxoffs = 1; $minoffs = 1;
+ @freq = (2, 2); $maxfreq = 2; $minfreq = 2;
+ @cmpl = (3, 3); $maxcmpl = 3; $mincmpl = 3;
+ $LastCnt = 2;
+ $LastFreqBase = 0;
+ $LastCmplScale = 1;
+ $LastTimeBase = 0;
+ $miny = -$MinClip;
+ $maxy = 3 + $MinClip;
+ }
+ close(OUT);
+
+ print "plot command input file created\n"
+ if $verbose > 2;
+
+
+ if (($fpos[$[] eq 'cnt' && scalar(@loffset) >= $cnt) ||
+ ($fpos[$[] eq 'start' && $mintime <= $StartTime) ||
+ ($fpos[$[] eq 'end'))
+ {
+ return ($fpos[$[],$filekey[$[],$loffset[$[]);
+ }
+ else # found to few lines - next time start search earlier in file
+ {
+ if ($fpos[$[] eq 'start')
+ {
+ ;# the timestamps we got for F_first and F_last guaranteed
+ ;# that no file is left out
+ ;# the only thing that could happen is:
+ ;# we guessed the starting point wrong
+ ;# compute a new guess from the first record found
+ ;# if this equals our last guess use data of first record
+ ;# otherwise try new guess
+
+ if ($fpos[$[+1] eq $filekey[$[] && $loffset[$[] > $fpos[$[+2])
+ {
+ local($noff);
+ $noff = $loffset[$[] - ($cnt - @loffset + 1) * $RecordSize;
+ $noff = 0 if $noff < 0;
+
+ return (@fpos[$[,$[+1], ($noff == $fpos[$[+2]) ? $loffset[$[] : $noff);
+ }
+ return ($fpos[$[],$filekey[$[],$loffset[$[]);
+ }
+ elsif ($fpos[$[] eq 'end' || $fpos[$[] eq 'cnt')
+ {
+ ;# try to start earlier in file
+ ;# if we already started at the beginning
+ ;# try to use previous file
+ ;# this assumes distance to better starting point is at most one file
+ ;# the primary guess at top of genfile() should usually allow this
+ ;# assumption
+ ;# if the offset of the first sample used is within
+ ;# a different file than we guessed it must have occurred later
+ ;# in the sequence of files
+ ;# this only can happen if our starting file did not contain
+ ;# a valid sample from the starting point we guessed
+ ;# however this does not invalidate our assumption, no check needed
+ local($noff,$key);
+ if ($fpos[$[+2] > 0)
+ {
+ $noff = $fpos[$[+2] - $RecordSize * ($cnt - @loffset + 1);
+ $noff = 0 if $noff < 0;
+ return (@fpos[$[,$[+1],$noff);
+ }
+ else
+ {
+ if ($fpos[$[+1] eq $F_files[$[])
+ {
+ ;# first file - and not enough samples
+ ;# use data of first sample
+ return ($fpos[$[], $filekey[$[], $loffset[$[]);
+ }
+ else
+ {
+ ;# search key of previous file
+ $key = $F_files[$[];
+ @F = reverse(@F_files);
+ while ($_ = shift(@F))
+ {
+ if ($_ eq $fpos[$[+1])
+ {
+ $key = shift(@F) if @F;
+ last;
+ }
+ }
+ $noff = int($F_size{$key} / $RecordSize);
+ $noff -= $cnt - @loffset;
+ $noff = 0 if $noff < 0;
+ $noff *= $RecordSize;
+ return ($fpos[$[], $key, $noff);
+ }
+ }
+ }
+ else
+ {
+ return ();
+ }
+
+ return 0 if @loffset <= 1 || ($loffset[$#loffset] - $loffset[$[]) <= 1;
+
+ ;# EOF - 1.1 * avg(line) * $cnt
+ local($val) = $loffset[$#loffset]
+ - $cnt * 11 * (($loffset[$#loffset] - $loffset[$[]) / @loffset) / 10;
+ return ($val < 0) ? 0 : $val;
+ }
+}
+
+$Ltime = -1 if ! defined($Ltime);
+$LastFreqBase = 0;
+$LastFreqBaseString = "??";
+
+;# initial setup of plot
+print "initialize plotting\n" if $verbose;
+if (defined($PrintIt))
+{
+ if ($PrintIt =~ m,/,)
+ {
+ print "Saving plot to file $PrintIt\n";
+ print PLOT "set output '$PrintIt'\n";
+ }
+ else
+ {
+ print "Printing plot on printer $PrintIt\n";
+ print PLOT "set output '| lpr -P$PrintIt -h'\n";
+ }
+ print PLOT "set terminal postscript landscape color solid 'Helvetica' 10\n";
+}
+print PLOT "set grid\n";
+print PLOT "set tics out\n";
+print PLOT "set format y '%g '\n";
+printf PLOT "set time 47\n" unless defined($PrintIt);
+
+@filepos =();
+while(1)
+{
+ print &ctime(time) if $verbose;
+
+ ;# update diplay characteristics
+ &read_config;# unless defined($PrintIt);
+
+ unlink($tmpfile);
+ @filepos = &genfile($samples,$srcprefix,$tmpfile,@filepos);
+
+ ;# make plotcmd display samples
+ &make_doplot;
+ print "Displaying plot...\n" if $verbose > 1;
+ print "command for plot sub process:\n$doplot----\n" if $verbose > 3;
+ print PLOT $doplot;
+}
+continue
+{
+ if (defined($PrintIt))
+ {
+ delete $SIG{'CHLD'};
+ print PLOT "quit\n";
+ close(PLOT);
+ if ($PrintIt =~ m,/,)
+ {
+ print "Plot saved to file $PrintIt\n";
+ }
+ else
+ {
+ print "Plot spooled to printer $PrintIt\n";
+ }
+ unlink($tmpfile);
+ exit(0);
+ }
+ ;# wait $delay seconds
+ print "waiting $delay seconds ..." if $verbose > 2;
+ sleep($delay);
+ print " continuing\n" if $verbose > 2;
+ undef($LastFreqBaseString);
+}
+
+
+sub date_time_spec2seconds
+{
+ local($_) = @_;
+ ;# a date_time_spec consistes of:
+ ;# YYYY-MM-DD_HH:MM:SS.ms
+ ;# values can be omitted from the beginning and default than to
+ ;# values of current date
+ ;# values omitted from the end default to lowest possible values
+
+ local($time) = time;
+ local($sec,$min,$hour,$mday,$mon,$year)
+ = localtime($time);
+
+ local($last) = ();
+
+ s/^\D*(.*\d)\D*/$1/; # strip off garbage
+
+ PARSE:
+ {
+ if (s/^(\d{4})(-|$)//)
+ {
+ if ($1 < 1970)
+ {
+ warn("$0: can not handle years before 1970 - year $1 ignored\n");
+ return undef;
+ }
+ elsif ( $1 >= 2070)
+ {
+ warn("$0: can not handle years past 2070 - year $1 ignored\n");
+ return undef;
+ }
+ else
+ {
+ $year = $1 % 100; # 0<= $year < 100
+ ;# - interpreted 70 .. 99,00 .. 69
+ }
+ $last = $[ + 5;
+ last PARSE if $_ eq '';
+ warn("$0: bad date_time_spec: \"$_\" found after YEAR\n"),
+ return(undef)
+ if $2 eq '';
+ }
+
+ if (s/^(\d{1,2})(-|$)//)
+ {
+ warn("$0: implausible month $1\n"),return(undef)
+ if $1 < 1 || $1 > 12;
+ $mon = $1 - 1;
+ $last = $[ + 4;
+ last PARSE if $_ eq '';
+ warn("$0: bad date_time_spec: \"$_\" found after MONTH\n"),
+ return(undef)
+ if $2 eq '';
+ }
+ else
+ {
+ warn("$0: bad date_time_spec \"$_\"\n"),return(undef)
+ if defined($last);
+
+ }
+
+ if (s/^(\d{1,2})([_ ]|$)//)
+ {
+ warn("$0: implausible month day $1 for month ".($mon+1)." (".
+ $MaxNumDaysPerMonth[$mon].")$mon\n"),
+ return(undef)
+ if $1 < 1 || $1 > $MaxNumDaysPerMonth[$mon];
+ $mday = $1;
+ $last = $[ + 3;
+ last PARSE if $_ eq '';
+ warn("$0: bad date_time_spec \"$_\" found after MDAY\n"),
+ return(undef)
+ if $2 eq '';
+ }
+ else
+ {
+ warn("$0: bad date_time_spec \"$_\"\n"), return undef
+ if defined($last);
+ }
+
+ ;# now we face a problem:
+ ;# if ! defined($last) a prefix of "07:"
+ ;# can be either 07:MM or 07:ss
+ ;# to get the second interpretation make the user add
+ ;# a msec fraction part and check for this special case
+ if (! defined($last) && s/^(\d{1,2}):(\d{1,2}\.\d+)//)
+ {
+ warn("$0: implausible minute $1\n"), return undef
+ if $1 < 0 || $1 >= 60;
+ warn("$0: implausible second $1\n"), return undef
+ if $2 < 0 || $2 >= 60;
+ $min = $1;
+ $sec = $2;
+ $last = $[ + 1;
+ last PARSE if $_ eq '';
+ warn("$0: bad date_time_spec \"$_\" after SECONDS\n");
+ return undef;
+ }
+
+ if (s/^(\d{1,2})(:|$)//)
+ {
+ warn("$0: implausible hour $1\n"), return undef
+ if $1 < 0 || $1 > 24;
+ $hour = $1;
+ $last = $[ + 2;
+ last PARSE if $_ eq '';
+ warn("$0: bad date_time_spec found \"$_\" after HOUR\n"),
+ return undef
+ if $2 eq '';
+ }
+ else
+ {
+ warn("$0: bad date_time_spec \"$_\"\n"), return undef
+ if defined($last);
+ }
+
+ if (s/^(\d{1,2})(:|$)//)
+ {
+ warn("$0: implausible minute $1\n"), return undef
+ if $1 < 0 || $1 >=60;
+ $min = $1;
+ $last = $[ + 1;
+ last PARSE if $_ eq '';
+ warn("$0: bad date_time_spec found \"$_\" after MINUTE\n"),
+ return undef
+ if $2 eq '';
+ }
+ else
+ {
+ warn("$0: bad date_time_spec \"$_\"\n"), return undef
+ if defined($last);
+ }
+
+ if (s/^(\d{1,2}(\.\d+)?)//)
+ {
+ warn("$0: implausible second $1\n"), return undef
+ if $1 < 0 || $1 >=60;
+ $sec = $1;
+ $last = $[;
+ last PARSE if $_ eq '';
+ warn("$0: bad date_time_spec found \"$_\" after SECOND\n");
+ return undef;
+ }
+ }
+
+ return $time unless defined($last);
+
+ $sec = 0 if $last > $[;
+ $min = 0 if $last > $[ + 1;
+ $hour = 0 if $last > $[ + 2;
+ $mday = 1 if $last > $[ + 3;
+ $mon = 0 if $last > $[ + 4;
+ local($rtime) = &timelocal($sec,$min,$hour,$mday,$mon,$year, 0,0, 0);
+
+ ;# $rtime may be off if daylight savings time is in effect at given date
+ return $rtime + ($sec - int($sec))
+ if $hour == (localtime($rtime))[$[+2];
+ return
+ &timelocal($sec,$min,$hour,$mday,$mon,$year, 0,0, 1)
+ + ($sec - int($sec));
+}
+
+
+sub min
+{
+ local($m) = shift;
+
+ grep((($m > $_) && ($m = $_),0),@_);
+ $m;
+}
+
+sub max
+{
+ local($m) = shift;
+
+ grep((($m < $_) && ($m = $_),0),@_);
+ $m;
+}
diff --git a/scripts/monitoring/ntptrap b/scripts/monitoring/ntptrap
new file mode 100644
index 0000000..5a1bcb1
--- /dev/null
+++ b/scripts/monitoring/ntptrap
@@ -0,0 +1,463 @@
+#!/local/bin/perl --*-perl-*-
+;#
+;# ntptrap,v 3.1 1993/07/06 01:09:15 jbj Exp
+;#
+;# a client for the xntp mode 6 trap mechanism
+;#
+;# Copyright (c) 1992
+;# Rainer Pruy Friedrich-Alexander Universitaet Erlangen-Nuernberg
+;#
+;#
+;#############################################################
+$0 =~ s!^.*/([^/]+)$!$1!; # strip to filename
+;# enforce STDOUT and STDERR to be line buffered
+$| = 1;
+select((select(STDERR),$|=1)[$[]);
+
+;#######################################
+;# load utility routines and definitions
+;#
+require('ntp.pl'); # implementation of the NTP protocol
+use Socket;
+
+#eval { require('sys/socket.ph'); require('netinet/in.ph') unless defined(&INADDR_ANY); } ||
+#do {
+ #die("$0: $@") unless $[ == index($@, "Can't locate ");
+ #warn "$0: $@";
+ #warn "$0: supplying some default definitions\n";
+ #eval 'sub INADDR_ANY { 0; } sub AF_INET {2;} sub SOCK_DGRAM {2;} 1;' || die "$0: $@";
+#};
+require('getopts.pl'); # option parsing
+require('ctime.pl'); # date/time formatting
+
+;######################################
+;# define some global constants
+;#
+$BASE_TIMEOUT=10;
+$FRAG_TIMEOUT=10;
+$MAX_TRY = 5;
+$REFRESH_TIME=60*15; # 15 minutes (server uses 1 hour)
+$ntp'timeout = $FRAG_TIMEOUT; #';
+$ntp'timeout if 0;
+
+;######################################
+;# now process options
+;#
+sub usage
+{
+ die("usage: $0 [-n] [-p <port>] [-l <logfile>] [host] ...\n");
+}
+
+$opt_l = "/dev/null"; # where to write debug messages to
+$opt_p = 0; # port to use locally - (0 does mean: will be choosen by kernel)
+
+&usage unless &Getopts('l:p:');
+&Getopts if 0; # make -w happy
+
+@Hosts = ($#ARGV < $[) ? ("localhost") : @ARGV;
+
+;# setup for debug output
+$DEBUGFILE=$opt_l;
+$DEBUGFILE="&STDERR" if $DEBUGFILE eq '-';
+
+open(DEBUG,">>$DEBUGFILE") || die("Cannot open \"$DEBUGFILE\": $!\n");
+select((select(DEBUG),$|=1)[$[]);
+
+;# &log prints a single trap record (adding a (local) time stamp)
+sub log
+{
+ chop($date=&ctime(time));
+ print "$date ",@_,"\n";
+}
+
+sub debug
+{
+ print DEBUG @_,"\n";
+}
+;#
+$proto_udp = (getprotobyname('udp'))[$[+2] ||
+ (warn("$0: Could not get protocoll number for 'udp' using 17"), 17);
+
+$ntp_port = (getservbyname('ntp','udp'))[$[+2] ||
+ (warn("$0: Could not get port number for service ntp/udp using 123"), 123);
+
+;#
+socket(S, &AF_INET, &SOCK_DGRAM, $proto_udp) || die("Cannot open socket: $!\n");
+
+;#
+bind(S, pack("S n a4 x8", &AF_INET, $opt_p, &INADDR_ANY)) ||
+ die("Cannot bind: $!\n");
+
+($my_port, $my_addr) = (unpack("S n a4 x8",getsockname(S)))[$[+1,$[+2];
+&log(sprintf("Listening at address %d.%d.%d.%d port %d",
+ unpack("C4",$my_addr), $my_port));
+
+;# disregister with all servers in case of termination
+sub cleanup
+{
+ &log("Aborted by signal \"$_[$[]\"") if defined($_[$[]);
+
+ foreach (@Hosts)
+ {
+ if ( ! defined($Host{$_}) )
+ {
+ print "no info for host '$_'\n";
+ next;
+ }
+ &ntp'send(S,31,0,"",pack("Sna4x8",&AF_INET,$ntp_port,$Host{$_})); #';
+ }
+ close(S);
+ exit(2);
+}
+
+$SIG{'HUP'} = 'cleanup';
+$SIG{'INT'} = 'cleanup';
+$SIG{'QUIT'} = 'cleanup';
+$SIG{'TERM'} = 'cleanup';
+
+0 && $a && $b;
+sub timeouts # sort timeout id array
+{
+ $TIMEOUTS{$a} <=> $TIMEOUTS{$b};
+}
+
+;# a Request element looks like: pack("a4SC",addr,associd,op)
+@Requests= ();
+
+;# compute requests for set trap control msgs to each host given
+{
+ local($name,$addr);
+
+ foreach (@Hosts)
+ {
+ if (/^(\d+)\.(\d+)\.(\d+)\.(\d+)$/)
+ {
+ ($name,$addr) =
+ (gethostbyaddr(pack("C4",$1,$2,$3,$4),&AF_INET))[$[,$[+4];
+ unless (defined($name))
+ {
+ $name = sprintf("[[%d.%d.%d.%d]]",$1,$2,$3,$4);
+ $addr = pack("C4",$1,$2,$3,$4);
+ }
+ }
+ else
+ {
+ ($name,$addr) = (gethostbyname($_))[$[,$[+4];
+ unless (defined($name))
+ {
+ warn "$0: unknown host \"$_\" - ignored\n";
+ next;
+ }
+ }
+ next if defined($Host{$name});
+ $Host{$name} = $addr;
+ $Host{$_} = $addr;
+ push(@Requests,pack("a4SC",$addr,0,6)); # schedule a set trap request for $name
+ }
+}
+
+sub hostname
+{
+ local($addr) = @_;
+ return $HostName{$addr} if defined($HostName{$addr});
+ local($name) = gethostbyaddr($addr,&AF_INET);
+ &debug(sprintf("hostname(%d.%d.%d.%d) = \"%s\"",unpack("C4",$addr),$name))
+ if defined($name);
+ defined($name) && ($HostName{$addr} = $name) && (return $name);
+ &debug(sprintf("Failed to get name for %d.%d.%d.%d",unpack("C4",$addr)));
+ return sprintf("[%d.%d.%d.%d]",unpack("C4",$addr));
+}
+
+;# when no hosts were given on the commandline no requests have been scheduled
+&usage unless (@Requests);
+
+&debug(sprintf("%d request(s) scheduled",scalar(@Requests)));
+grep(&debug(" - ".$_),keys(%Host));
+
+;# allocate variables;
+$addr="";
+$assoc=0;
+$op = 0;
+$timeout = 0;
+$ret="";
+%TIMEOUTS = ();
+%TIMEOUT_PROCS = ();
+@TIMEOUTS = ();
+
+$len = 512;
+$buf = " " x $len;
+
+while (1)
+{
+ if (@Requests || @TIMEOUTS) # if there is some work pending
+ {
+ if (@Requests)
+ {
+ ($addr,$assoc,$op) = unpack("a4SC",($req = shift(@Requests)));
+ &debug(sprintf("Request: %s: %s(%d)",&hostname($addr), &ntp'cntrlop_name($op), $assoc)); #';))
+ $ret = &ntp'send(S,$op,$assoc,"", #'(
+ pack("Sna4x8",&AF_INET,$ntp_port,$addr));
+ &set_timeout("retry-".unpack("H*",$req),time+$BASE_TIMEOUT,
+ sprintf("&retry(\"%s\");",unpack("H*",$req)));
+
+ last unless (defined($ret)); # warn called by ntp'send();
+
+ ;# if there are more requests just have a quick look for new messages
+ ;# otherwise grant server time for a response
+ $timeout = @Requests ? 0 : $BASE_TIMEOUT;
+ }
+ if ($timeout && @TIMEOUTS)
+ {
+ ;# ensure not to miss a timeout
+ if ($timeout + time > $TIMEOUTS{$TIMEOUTS[$[]})
+ {
+ $timeout = $TIMEOUTS{$TIMEOUTS[$[]} - time;
+ $timeout = 0 if $timeout < 0;
+ }
+ }
+ }
+ else
+ {
+ ;# no work yet - wait for some messages dropping in
+ ;# usually this will not hapen as the refresh semantic will
+ ;# always have a pending timeout
+ undef($timeout);
+ }
+
+ vec($mask="",fileno(S),1) = 1;
+ $ret = select($mask,undef,undef,$timeout);
+
+ warn("$0: select: $!\n"),last if $ret < 0; # give up on error return from select
+
+ if ($ret == 0)
+ {
+ ;# timeout
+ if (@TIMEOUTS && time > $TIMEOUTS{$TIMEOUTS[$[]})
+ {
+ ;# handle timeout
+ $timeout_proc =
+ (delete $TIMEOUT_PROCS{$TIMEOUTS[$[]},
+ delete $TIMEOUTS{shift(@TIMEOUTS)})[$[];
+ eval $timeout_proc;
+ die "timeout eval (\"$timeout_proc\"): $@\n" if $@;
+ }
+ ;# else: there may be something to be sent
+ }
+ else
+ {
+ ;# data avail
+ $from = recv(S,$buf,$len,0);
+ ;# give up on error return from recv
+ warn("$0: recv: $!\n"), last unless (defined($from));
+
+ $from = (unpack("Sna4",$from))[$[+2]; # keep host addr only
+ ;# could check for ntp_port - but who cares
+ &debug("-Packet from ",&hostname($from));
+
+ ;# stuff packet into ntp mode 6 receive machinery
+ ($ret,$data,$status,$associd,$op,$seq,$auth_keyid) =
+ &ntp'handle_packet($buf,$from); # ';
+ &debug(sprintf("%s uses auth_keyid %d",&hostname($from),$auth_keyid)) if defined($auth_keyid);
+ next unless defined($ret);
+
+ if ($ret eq "")
+ {
+ ;# handle packet
+ ;# simple trap response messages have neither timeout nor retries
+ &clear_timeout("retry-".unpack("H*",pack("a4SC",$from,$associd,$op))) unless $op == 7;
+ delete $RETRY{pack("a4SC",$from,$associd,$op)} unless $op == 7;
+
+ &process_response($from,$ret,$data,$status,$associd,$op,$seq,$auth_keyid);
+ }
+ else
+ {
+ ;# some kind of error
+ &log(sprintf("%50s: %s: %s",(gethostbyaddr($from,&AF_INET))[$[],$ret,$data));
+ if ($ret ne "TIMEOUT" && $ret ne "ERROR")
+ {
+ &clear_timeout("retry-".unpack("H*",pack("a4SC",$from,$associd,$op)));
+ }
+ }
+ }
+
+}
+
+warn("$0: terminating\n");
+&cleanup;
+exit 0;
+
+;##################################################
+;# timeout support
+;#
+sub set_timeout
+{
+ local($id,$time,$proc) = @_;
+
+ $TIMEOUTS{$id} = $time;
+ $TIMEOUT_PROCS{$id} = $proc;
+ @TIMEOUTS = sort timeouts keys(%TIMEOUTS);
+ chop($date=&ctime($time));
+ &debug(sprintf("Schedule timeout \"%s\" for %s", $id, $date));
+}
+
+sub clear_timeout
+{
+ local($id) = @_;
+ delete $TIMEOUTS{$id};
+ delete $TIMEOUT_PROCS{$id};
+ @TIMEOUTS = sort timeouts keys(%TIMEOUTS);
+ &debug("Clear timeout \"$id\"");
+}
+
+0 && &refresh;
+sub refresh
+{
+ local($addr) = @_[$[];
+ $addr = pack("H*",$addr);
+ &debug(sprintf("Refreshing trap for %s", &hostname($addr)));
+ push(@Requests,pack("a4SC",$addr,0,6));
+}
+
+0 && &retry;
+sub retry
+{
+ local($tag) = @_;
+ $tag = pack("H*",$tag);
+ $RETRY{$tag} = 0 if (!defined($RETRY{$tag}));
+
+ if (++$RETRY{$tag} > $MAX_TRY)
+ {
+ &debug(sprintf("Retry failed: %s assoc %5d op %d",
+ &hostname(substr($tag,$[,4)),
+ unpack("x4SC",$tag)));
+ return;
+ }
+ &debug(sprintf("Retrying: %s assoc %5d op %d",
+ &hostname(substr($tag,$[,4)),
+ unpack("x4SC",$tag)));
+ push(@Requests,$tag);
+}
+
+sub process_response
+{
+ local($from,$ret,$data,$status,$associd,$op,$seq,$auth_keyid) = @_;
+
+ $msg="";
+ if ($op == 7) # trap response
+ {
+ $msg .= sprintf("%40s trap#%-5d",
+ &hostname($from),$seq);
+ &debug (sprintf("\nTrap %d associd %d:\n%s\n===============\n",$seq,$associd,$data));
+ if ($associd == 0) # system event
+ {
+ $msg .= " SYSTEM ";
+ $evnt = &ntp'SystemEvent($status); #';
+ $msg .= "$evnt ";
+ ;# for special cases add additional info
+ ($stratum) = ($data =~ /stratum=(\d+)/);
+ ($refid) = ($data =~ /refid=([\w\.]+)/);
+ $msg .= "stratum=$stratum refid=$refid";
+ if ($refid =~ /\[?(\d+)\.(\d+)\.(\d+)\.(\d+)/)
+ {
+ local($x) = (gethostbyaddr(pack("C4",$1,$2,$3,$4),&AF_INET));
+ $msg .= " " . $x if defined($x)
+ }
+ if ($evnt eq "event_sync_chg")
+ {
+ $msg .= sprintf("%s %s ",
+ &ntp'LI($status), #',
+ &ntp'ClockSource($status) #'
+ );
+ }
+ elsif ($evnt eq "event_sync/strat_chg")
+ {
+ ($peer) = ($data =~ /peer=([0-9]+)/);
+ $msg .= " peer=$peer";
+ }
+ elsif ($evnt eq "event_clock_excptn")
+ {
+ if (($device) = ($data =~ /device=\"([^\"]+)\"/))
+ {
+ ($cstatus) = ($data =~ /refclockstatus=0?x?([\da-fA-F]+)/);
+ $Cstatus = hex($cstatus);
+ $msg .= sprintf("- %-32s",&ntp'clock_status($Cstatus)); #');
+ ($timecode) = ($data =~ /timecode=\"([^\"]+)\"/);
+ $msg .= " \"$device\" \"$timecode\"";
+ }
+ else
+ {
+ push(@Requests,pack("a4SC",$from, $associd, 4));
+ }
+ }
+ }
+ else # peer event
+ {
+ $msg .= sprintf("peer %5d ",$associd);
+ ($srcadr) = ($data =~ /srcadr=\[?([\d\.]+)/);
+ $msg .= sprintf("%-18s %40s ", "[$srcadr]",
+ &hostname(pack("C4",split(/\./,$srcadr))));
+ $evnt = &ntp'PeerEvent($status); #';
+ $msg .= "$evnt ";
+ ;# for special cases include additional info
+ if ($evnt eq "event_clock_excptn")
+ {
+ if (($device) = ($data =~ /device=\"([^\"]+)\"/))
+ {
+ ;#&debug("----\n$data\n====\n");
+ ($cstatus) = ($data =~ /refclockstatus=0?x?([\da-fA-F]+)/);
+ $Cstatus = hex($cstatus);
+ $msg .= sprintf("- %-32s",&ntp'clock_status($Cstatus)); #');
+ ($timecode) = ($data =~ /timecode=\"([^\"]+)\"/);
+ $msg .= " \"$device\" \"$timecode\"";
+ }
+ else
+ {
+ ;# no clockvars included - post a cv request
+ push(@Requests,pack("a4SC",$from, $associd, 4));
+ }
+ }
+ elsif ($evnt eq "event_stratum_chg")
+ {
+ ($stratum) = ($data =~ /stratum=(\d+)/);
+ $msg .= "new stratum $stratum";
+ }
+ }
+ }
+ elsif ($op == 6) # set trap resonse
+ {
+ &debug("Set trap ok from ",&hostname($from));
+ &set_timeout("refresh-".unpack("H*",$from),time+$REFRESH_TIME,
+ sprintf("&refresh(\"%s\");",unpack("H*",$from)));
+ return;
+ }
+ elsif ($op == 4) # read clock variables response
+ {
+ ;# status of clock
+ $msg .= sprintf(" %40s ", &hostname($from));
+ if ($associd == 0)
+ {
+ $msg .= "system clock status: ";
+ }
+ else
+ {
+ $msg .= sprintf("peer %5d clock",$associd);
+ }
+ $msg .= sprintf("%-32s",&ntp'clock_status($status)); #');
+ ($device) = ($data =~ /device=\"([^\"]+)\"/);
+ ($timecode) = ($data =~ /timecode=\"([^\"]+)\"/);
+ $msg .= " \"$device\" \"$timecode\"";
+ }
+ elsif ($op == 31) # unset trap response (UNOFFICIAL op)
+ {
+ ;# clear timeout
+ &debug("Clear Trap ok from ",&hostname($from));
+ &clear_timeout("refresh-".unpack("H*",$from));
+ return;
+ }
+ else # unexpected response
+ {
+ $msg .= "unexpected response to op $op assoc=$associd";
+ $msg .= sprintf(" status=%04x",$status);
+ }
+ &log($msg);
+}
diff --git a/scripts/monitoring/timelocal.pl b/scripts/monitoring/timelocal.pl
new file mode 100644
index 0000000..d0f73a2
--- /dev/null
+++ b/scripts/monitoring/timelocal.pl
@@ -0,0 +1,77 @@
+;# timelocal.pl
+;#
+;# Usage:
+;# $time = timelocal($sec,$min,$hours,$mday,$mon,$year,$junk,$junk,$isdst);
+;# $time = timegm($sec,$min,$hours,$mday,$mon,$year);
+
+;# These routines are quite efficient and yet are always guaranteed to agree
+;# with localtime() and gmtime(). We manage this by caching the start times
+;# of any months we've seen before. If we know the start time of the month,
+;# we can always calculate any time within the month. The start times
+;# themselves are guessed by successive approximation starting at the
+;# current time, since most dates seen in practice are close to the
+;# current date. Unlike algorithms that do a binary search (calling gmtime
+;# once for each bit of the time value, resulting in 32 calls), this algorithm
+;# calls it at most 6 times, and usually only once or twice. If you hit
+;# the month cache, of course, it doesn't call it at all.
+
+;# timelocal is implemented using the same cache. We just assume that we're
+;# translating a GMT time, and then fudge it when we're done for the timezone
+;# and daylight savings arguments. The timezone is determined by examining
+;# the result of localtime(0) when the package is initialized. The daylight
+;# savings offset is currently assumed to be one hour.
+
+CONFIG: {
+ package timelocal;
+
+ @epoch = localtime(0);
+ $tzmin = $epoch[2] * 60 + $epoch[1]; # minutes east of GMT
+ if ($tzmin > 0) {
+ $tzmin = 24 * 60 - $tzmin; # minutes west of GMT
+ $tzmin -= 24 * 60 if $epoch[5] == 70; # account for the date line
+ }
+
+ $SEC = 1;
+ $MIN = 60 * $SEC;
+ $HR = 60 * $MIN;
+ $DAYS = 24 * $HR;
+ $YearFix = ((gmtime(946684800))[5] == 100) ? 100 : 0;
+}
+
+sub timegm {
+ package timelocal;
+
+ $ym = pack(C2, @_[5,4]);
+ $cheat = $cheat{$ym} || &cheat;
+ $cheat + $_[0] * $SEC + $_[1] * $MIN + $_[2] * $HR + ($_[3]-1) * $DAYS;
+}
+
+sub timelocal {
+ package timelocal;
+
+ $ym = pack(C2, @_[5,4]);
+ $cheat = $cheat{$ym} || &cheat;
+ $cheat + $_[0] * $SEC + $_[1] * $MIN + $_[2] * $HR + ($_[3]-1) * $DAYS
+ + $tzmin * $MIN - 60 * 60 * ($_[8] != 0);
+}
+
+package timelocal;
+
+sub cheat {
+ $year = $_[5];
+ $month = $_[4];
+ $guess = $^T;
+ @g = gmtime($guess);
+ $year += $YearFix if $year < $epoch[5];
+ while ($diff = $year - $g[5]) {
+ $guess += $diff * (364 * $DAYS);
+ @g = gmtime($guess);
+ }
+ while ($diff = $month - $g[4]) {
+ $guess += $diff * (28 * $DAYS);
+ @g = gmtime($guess);
+ }
+ $g[3]--;
+ $guess -= $g[0] * $SEC + $g[1] * $MIN + $g[2] * $HR + $g[3] * $DAYS;
+ $cheat{$ym} = $guess;
+}
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