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#-----------------------------------------------------------------------------
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# TimeZone AWStats plugin
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# Allow AWStats to correct a bad timezone for user of IIS that use strange
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#-----------------------------------------------------------------------------
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# Perl Required Modules: None
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#-----------------------------------------------------------------------------
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# $Revision: 1.10 $ - $Author: eldy $ - $Date: 2004/07/11 10:44:41 $
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# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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# !!!!! This plugin reduces AWStats speed by 40% !!!!!
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# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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# TimeZone AWStats reloaded plugin
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# Allow AWStats to convert GMT time stamps to local time zone
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# taking into account daylight saving time.
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# If the POSIX module is available, a target time zone name
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# can be provided, otherwise the default system local time is used.
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# For compatibility with the original version of this plugin, "-/+hours"
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# is interpreted as a fixed difference to GMT.
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# 2009 jacob@internet24.de
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#-----------------------------------------------------------------------------
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# Perl Required Modules: POSIX
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#-----------------------------------------------------------------------------
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# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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# !!!!! This plugin reduces AWStats speed by about 10% !!!!!
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# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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# ENTER HERE THE USE COMMAND FOR ALL REQUIRED PERL MODULES
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#use Time::Local 'timelocal_nocheck';
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use strict;no strict "refs";
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# ENTER HERE CODE TO DO INIT PLUGIN ACTIONS
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if (! $InitParams || int($InitParams) == 0) { return "Error: Disable plugin if TimeZone is 0 (Plugin useless)"; } # We do not need this plugin if TZ=0
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$PluginTimeZoneSeconds=(int($InitParams)*3600);
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if (!eval ('require "POSIX.pm"'))
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return $@?"Error: $@":"Error: Need Perl module POSIX";
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$PluginTimeZoneZone = "$InitParams";
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$PluginTimeZoneCache = {};
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my $checkversion=&Check_Plugin_Version($PluginNeedAWStatsVersion);
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return ($checkversion?$checkversion:"$PluginHooksFunctions");
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#-----------------------------------------------------------------------------
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# PLUGIN FUNCTION: ChangeTime_pluginname
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# UNIQUE: YES (Only one plugin using this function can be loaded)
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#-----------------------------------------------------------------------------
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sub ChangeTime_timezone {
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my ($nsec,$nmin,$nhour,$nmday,$nmon,$nyear,$nwday) = localtime(Time::Local::timelocal(int(@$dateparts[5]), int(@$dateparts[4]), int(@$dateparts[3]), int(@$dateparts[0]), int(@$dateparts[1])-1, int(@$dateparts[2])-1900) + $PluginTimeZoneSeconds);
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return ($nmday, $nmon+1, $nyear+1900, $nhour, $nmin, $nsec);
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my $e = $PluginTimeZoneCache->{$d[2]};
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$e = $PluginTimeZoneCache->{$d[2]} = [
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tz_find_zone_diff($PluginTimeZoneZone, $d[2]),
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tz_find_month_length($PluginTimeZoneZone, $d[2])
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INTERVAL: foreach $i (@{@$e[0]}) {
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next INTERVAL if $d[$_]>@$i[$_];
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last if $d[$_]<@$i[$_];
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} elsif ( $d[5]>59 ) {
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$d[5] -= 60, $d[4]++;
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$d[4] += 60, $d[3]--;
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} elsif ( $d[4]>59 ) {
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$d[4] -= 60, $d[3]++;
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$d[3] += 24, $d[0]--;
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} elsif ( $d[3]>23 ) {
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$d[3] -= 24, $d[0]++;
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$d[2]--, $d[1] = 12, $d[0] = 31;
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$d[0] = $e->[1][$d[1]];
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} elsif ($d[0]>$e->[1][$d[1]]) {
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# This should never be reached
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# UNIQUE: YES (Only one plugin using this function can be loaded)
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#-----------------------------------------------------------------------------
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sub GetTimeZoneTitle_timezone {
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return ($PluginTimeZoneSeconds/3600);
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return $PluginTimeZoneZone;
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# convenience wrappers
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return timegm($_[0], $_[1], $_[2],
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$_[3], $_[4]-1, $_[5]-1900, 0, 0, -1);
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my ($time, $shift) = @_;
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my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) =
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2147483647, # max(int32)
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int(($shift%3600)/60),
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# return largest $value between $left and $right
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# whose tz_shift is equal to that of $left
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my ($left, $right) = @_;
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return undef if $left>$right;
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return $left if ($right-$left)<=1;
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my $middle = int(($right+$left)/2);
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my ($leftshift, $rightshift, $middleshift) =
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(tz_shift($left), tz_shift($right), tz_shift($middle));
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if ($leftshift == $middleshift) {
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return undef if $rightshift == $middleshift;
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return tz_find_break($middle, $right);
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elsif ($rightshift == $middleshift) {
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return tz_find_break($left, $middle);
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# compute difference beetween localtime and gmtime in seconds
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# for unix time stamp $time
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my ($lsec,$lmin,$lhour,$lmday,$lmon,$lyear,$lwday,$lyday,$lisdst) =
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my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) =
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my $day_change = $lyear-$year;
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$day_change = $lmon-$mon unless $day_change;
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$day_change = $lmday-$mday unless $day_change;
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my $hour_diff = $lhour-$hour;
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my $min_diff = $lmin-$min;
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my $sec_diff = $lsec-$sec;
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elsif($day_change<0) {
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return (($hour_diff*60)+$min_diff)*60+$sec_diff;
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# Compute time zone shift intervals for $year
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# and time zone $zone
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sub tz_find_zone_diff
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my ($zone, $year) = @_;
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my $othertz = $PluginTimeZoneZone &&
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$PluginTimeZoneZone !~ m/^[+-]?\d+$/;
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my ($left, $middle, $right);
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my ($leftshift, $middleshift, $rightshift);
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local $ENV{TZ} = $zone
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$left = tz_mktime(0,0,0,1,1,$year);
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$middle = tz_mktime(0,0,0,1,7,$year);
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$right = tz_mktime(59,59,23,31,12,$year);
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if (!$PluginTimeZoneZone || $PluginTimeZoneZone !~ m/^[+-]?\d+$/)
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$leftshift = tz_shift($left);
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$middleshift = tz_shift($middle);
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$rightshift = tz_shift($right)
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$leftshift = $middleshift = $rightshift =
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int($PluginTimeZoneZone)*3600;
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if ($leftshift != $rightshift || $rightshift != $middleshift) {
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tz_interval(tz_find_break($left, $middle), $leftshift),
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tz_interval(tz_find_break($middle, $right), $middleshift),
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tz_interval($right, $rightshift)
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POSIX::tzset() if $othertz;
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POSIX::tzset() if $othertz;
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return [ tz_interval($right, $rightshift) ]
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# Compute number of days in all months for $year
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sub tz_find_month_length
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my ($zone, $year) = @_;
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my $othertz = $PluginTimeZoneZone &&
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$PluginTimeZoneZone !~ m/^[+-]?\d+$/;
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my $months = [ undef, 31, 28, 31, 30, 31, 30,
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31, 31, 30, 31, 30, 31 ];
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local $ENV{TZ} = $zone
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(localtime(tz_mktime(0, 0, 12, 28, 2, $year)+86400))[4]
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POSIX::tzset() if $othertz;
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POSIX::tzset() if $othertz;