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mrtg-rrd.cgi
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mrtg-rrd.cgi
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#!/usr/bin/perl -w
#
# $Id: mrtg-rrd.cgi,v 1.35 2003/08/18 15:58:57 kas Exp $
#
# mrtg-rrd.cgi: The script for generating graphs for MRTG statistics.
#
# Loosely modelled after the Rainer.Bawidamann@informatik.uni-ulm.de's
# 14all.cgi
#
# Copyright (C) 2001 Jan "Yenya" Kasprzak <kas@fi.muni.cz>
# Copyright (C) 2009 Morgan Aldridge <morgant@makkintosshu.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
use strict;
use POSIX qw(strftime);
use Time::Local;
# The %.1f should work on 5.005+. There may be other problems, though.
# I've tested this on 5.8.0 only, so mind the gap!
require 5.005;
# Location of RRDs.pm, if it is not in @INC
# use lib '/usr/lib/perl5/5.00503/i386-linux';
use RRDs;
use vars qw(@config_files @all_config_files %targets $config_time
%directories $version $imagetype);
# EDIT THIS to reflect all your MRTG config files
BEGIN { @config_files = qw(/home/fadmin/mrtg/cfg/mrtg.cfg); }
$version = '0.7.1';
# This depends on what image format your libgd (and rrdtool) uses
$imagetype = 'png'; # or make this 'gif';
# strftime(3) compatibility test
my $percent_h = '%-H';
$percent_h = '%H' if (strftime('%-H', gmtime(0)) !~ /^\d+$/);
sub handler ($)
{
my ($q) = @_;
try_read_config($q->url());
my $path = $q->path_info();
$path =~ s/^\///;
$path =~ s/\/$//;
if (defined $directories{$path}) {
if ($q->path_info() =~ /\/$/) {
print_dir($path);
} else {
print "Location: ", $q->url(-path_info=>1), "/\n\n";
}
return;
}
my ($dir, $stat, $ext) = ($q->path_info() =~
/^(.*)\/([^\/]+)(\.html|-(day|week|month|year)\.$imagetype)$/);
$dir =~ s/^\///;
print_error("Undefined statistics")
unless defined $targets{$stat};
print_error("Incorrect directory")
unless defined $targets{$stat}{directory} || $targets{$stat}{directory} eq $dir;
my $tgt = $targets{$stat};
common_args($stat, $tgt, $q);
# We may be running under mod_perl or something. Do not destroy
# the original settings of timezone.
my $oldtz;
if (defined $tgt->{timezone}) {
$oldtz = $ENV{TZ};
$ENV{TZ} = $tgt->{timezone};
}
if ($ext eq '.html') {
do_html($tgt);
} elsif ($ext eq '-day.' . $imagetype) {
do_image($tgt, 'day');
} elsif ($ext eq '-week.' . $imagetype) {
do_image($tgt, 'week');
} elsif ($ext eq '-month.' . $imagetype) {
do_image($tgt, 'month');
} elsif ($ext eq '-year.' . $imagetype) {
do_image($tgt, 'year');
} else {
print_error("Unknown extension");
}
$ENV{TZ} = $oldtz
if defined $oldtz;
}
sub do_html($)
{
my ($tgt) = @_;
my @day = do_image($tgt, 'day');
my @week = do_image($tgt, 'week');
my @month = do_image($tgt, 'month');
my @year = do_image($tgt, 'year');
http_headers('text/html', $tgt->{config});
print <<'EOF';
<HTML>
<HEAD>
<TITLE>
EOF
print $tgt->{title} if defined $tgt->{title};
print "</TITLE>\n";
html_comments($tgt, 'd', @{$day[0]}) if $#day != -1;
html_comments($tgt, 'w', @{$week[0]}) if $#week != -1;
html_comments($tgt, 'm', @{$month[0]}) if $#month != -1;
html_comments($tgt, 'y', @{$year[0]}) if $#year != -1;
print $tgt->{addhead} if defined $tgt->{addhead};
print "</HEAD>\n", $tgt->{bodytag}, "\n";
print $tgt->{pagetop} if defined $tgt->{pagetop};
unless (defined $tgt->{options}{noinfo}) {
my @st = stat $tgt->{rrd};
print "<HR>\nThe statistics were last updated ",
strftime("<B>%A, %d %B, %H:%M:%S %Z</B>\n",
localtime($st[9]));
}
my $dayavg = $tgt->{config}->{interval};
html_graph($tgt, 'day', 'Daily', $dayavg . ' Minute', \@day);
html_graph($tgt, 'week', 'Weekly', '30 Minute', \@week);
html_graph($tgt, 'month', 'Monthly', '2 Hour', \@month);
html_graph($tgt, 'year', 'Yearly', '1 Day', \@year);
unless (defined $tgt->{options}{nolegend}) {
print <<EOF;
<HR>
<table WIDTH=500 BORDER=0 CELLPADDING=4 CELLSPACING=0>
EOF
print <<EOF unless ($tgt->{options}{noi});
<tr>
<td ALIGN=RIGHT><font SIZE=-1 COLOR="$tgt->{col1}">
<b>$tgt->{colname1} ###</b></font></td>
<td><font SIZE=-1>$tgt->{legend1}</font></td>
</tr>
EOF
print <<EOF unless ($tgt->{options}{noo});
<tr>
<td ALIGN=RIGHT><font SIZE=-1 COLOR="$tgt->{col2}">
<b>$tgt->{colname2} ###</b></font></td>
<td><font SIZE=-1>$tgt->{legend2}</font></td>
</tr>
EOF
if ($tgt->{withpeak} ne '') {
print <<EOF unless ($tgt->{options}{noi});
<tr>
<td ALIGN=RIGHT><font SIZE=-1 COLOR="$tgt->{col3}">
<b>$tgt->{colname3} ###</b></font></td>
<td><font SIZE=-1>$tgt->{legend3}</font></td>
</tr>
EOF
print <<EOF unless ($tgt->{options}{noo});
<tr>
<td ALIGN=RIGHT><font SIZE=-1 COLOR="$tgt->{col4}">
<b>$tgt->{colname4} ###</b></font></td>
<td><font SIZE=-1>$tgt->{legend4}</font></td>
</tr>
EOF
}
print <<EOF;
</table>
EOF
}
print_banner($tgt->{config})
unless defined $tgt->{options}{nobanner};
print $tgt->{pagefoot} if defined $tgt->{pagefoot};
print "\n", <<'EOF';
</body>
</html>
EOF
}
sub html_comments($$@)
{
my ($tgt, $letter, @val) = @_;
return if $#val == -1;
unless ($tgt->{options}{noi}) {
print "<!-- maxin $letter ", $val[1], " -->\n";
print "<!-- avin $letter ", $val[3], " -->\n";
print "<!-- cuin $letter ", $val[5], " -->\n";
}
unless ($tgt->{options}{noo}) {
print "<!-- maxout $letter ", $val[0], " -->\n";
print "<!-- avout $letter ", $val[2], " -->\n";
print "<!-- cuout $letter ", $val[4], " -->\n";
}
}
sub html_graph($$$$$)
{
my ($tgt, $ext, $freq, $period, $params) = @_;
return unless defined $tgt->{$ext};
my @values = @{$params->[0]};
my $x = $params->[1];
my $y = $params->[2];
$x *= $tgt->{xzoom} if defined $tgt->{xzoom};
$y *= $tgt->{yzoom} if defined $tgt->{yzoom};
my $kilo = $tgt->{kilo};
my @kmg = split(',', $tgt->{kmg});
my $fmt;
if (defined $tgt->{options}{integer}) {
$fmt = '%d';
} else {
$fmt = '%.1f';
}
my @percent = do_percent($tgt, \@values);
my @relpercent = do_relpercent($tgt, \@values);
my @nv;
for my $val (@values) {
if (@kmg == 0) { # kMG[target]: <empty>
push @nv, sprintf($fmt, $val);
next;
}
for my $si (@kmg) {
if ($val < 10000) {
push @nv, sprintf($fmt, $val) . " $si";
last;
}
$val /= $kilo;
}
}
@values = @nv;
print "<HR>\n<B>\`$freq\' Graph ($period Average)</B><BR>\n";
print '<IMG SRC="', $tgt->{url}, '-', $ext, '.' . $imagetype .
'" WIDTH=', $x, ' HEIGHT=', $y, ' ALT="', $freq,
' Graph" VSPACE=10 ALIGN=TOP><BR>', "\n";
print '<TABLE CELLPADDING=0 CELLSPACING=0>';
print <<EOF if $tgt->{legendi} ne '' && !$tgt->{options}{noi};
<TR>
<TD ALIGN=RIGHT><SMALL>Max <FONT COLOR="$tgt->{col1}">$tgt->{legendi}</FONT></SMALL></TD>
<TD ALIGN=RIGHT><SMALL> $values[1]$tgt->{shortlegend}$percent[1]</SMALL></TD>
<TD WIDTH=5></TD>
<TD ALIGN=RIGHT><SMALL>Average <FONT COLOR="$tgt->{col1}">$tgt->{legendi}</FONT></SMALL></TD>
<TD ALIGN=RIGHT><SMALL> $values[3]$tgt->{shortlegend}$percent[3]</SMALL></TD>
<TD WIDTH=5></TD>
<TD ALIGN=RIGHT><SMALL>Current <FONT COLOR="$tgt->{col1}">$tgt->{legendi}</FONT></SMALL></TD>
<TD ALIGN=RIGHT><SMALL> $values[5]$tgt->{shortlegend}$percent[5]</SMALL></TD>
</TR>
EOF
print <<EOF if $tgt->{legendo} ne '' && !$tgt->{options}{noo};
<TR>
<TD ALIGN=RIGHT><SMALL>Max <FONT COLOR="$tgt->{col2}">$tgt->{legendo}</FONT></SMALL></TD>
<TD ALIGN=RIGHT><SMALL> $values[0]$tgt->{shortlegend}$percent[0]</SMALL></TD>
<TD WIDTH=5></TD>
<TD ALIGN=RIGHT><SMALL>Average <FONT COLOR="$tgt->{col2}">$tgt->{legendo}</FONT></SMALL></TD>
<TD ALIGN=RIGHT><SMALL> $values[2]$tgt->{shortlegend}$percent[2]</SMALL></TD>
<TD WIDTH=5></TD>
<TD ALIGN=RIGHT><SMALL>Current <FONT COLOR="$tgt->{col2}">$tgt->{legendo}</FONT></SMALL></TD>
<TD ALIGN=RIGHT><SMALL> $values[4]$tgt->{shortlegend}$percent[4]</SMALL></TD>
EOF
if (defined $tgt->{options}{dorelpercent}) {
print <<"EOF";
</TR><TR>
<TD ALIGN=RIGHT><SMALL>Max <FONT COLOR="$tgt->{col5}"> Percentage:</FONT></SMALL></TD>
<TD ALIGN=RIGHT><SMALL> $relpercent[0]</SMALL></TD>
<TD WIDTH=5></TD>
<TD ALIGN=RIGHT><SMALL>Average <FONT COLOR="$tgt->{col5}"> Percentage:</FONT></SMALL></TD>
<TD ALIGN=RIGHT><SMALL> $relpercent[1]</SMALL></TD>
<TD WIDTH=5></TD>
<TD ALIGN=RIGHT><SMALL>Current <FONT COLOR="$tgt->{col5}"> Percentage:</FONT></SMALL></TD>
<TD ALIGN=RIGHT><SMALL> $relpercent[2]</SMALL></TD>
EOF
}
print <<'EOF';
</TR>
</TABLE>
EOF
}
sub do_percent($$)
{
my ($tgt, $values) = @_;
my @percent = ('', '', '', '', '', '');
return @percent if defined $tgt->{options}{nopercent};
for my $val (0..$#$values) {
my $mx = ($val % 2 == 1) ? $tgt->{maxbytes1} : $tgt->{maxbytes2};
next unless defined $mx;
my $p = sprintf("%.1f", $values->[$val]*100/$mx);
$percent[$val] = ' (' . $p . '%)';
}
@percent;
}
sub do_relpercent($$)
{
my ($tgt, $values) = @_;
my @percent = ('', '', '');
return @percent unless defined $tgt->{options}{dorelpercent};
for my $val (0..2) {
$percent[$val] = sprintf("%.1f",
$values->[2*$val+1] * 100 / $values->[2*$val])
if $values->[2*$val] > 0;
$percent[$val] ||= 0;
$percent[$val] .= ' %';
}
@percent;
}
sub http_headers($$)
{
my ($content_type, $cfg) = @_;
print <<"EOF";
Content-Type: $content_type
Refresh: $cfg->{refresh}
Pragma: no-cache
EOF
# Expires header calculation stolen from CGI.pm
print strftime("Expires: %a, %d %b %Y %H:%M:%S GMT\n",
gmtime(time+60*$cfg->{interval}));
print "\n";
}
sub do_image($$)
{
my ($target, $ext) = @_;
my $file = $target->{$ext};
return unless defined $file;
# Now the vertical rule at the end of the day
my @t = localtime(time);
$t[0] = $t[1] = $t[2] = 0;
my $seconds;
my $oldsec;
my $back;
my $xgrid;
my $unscaled;
my $withpeak;
my $noi = 1 if $target->{options}{noi};
my $noo = 1 if $target->{options}{noo};
if ($ext eq 'day') {
$seconds = timelocal(@t);
$back = 30*3600; # 30 hours
$oldsec = $seconds - 86400;
$unscaled = 1 if $target->{unscaled} =~ /d/;
$withpeak = 1 if $target->{withpeak} =~ /d/;
# We need this only for day graph. The other ones
# are magically correct.
$xgrid = 'HOUR:1:HOUR:6:HOUR:2:0:' . $percent_h;
} elsif ($ext eq 'week') {
$seconds = timelocal(@t);
$t[6] = ($t[6]+6) % 7;
$seconds -= $t[6]*86400;
$back = 8*86400; # 8 days
$oldsec = $seconds - 7*86400;
$unscaled = 1 if $target->{unscaled} =~ /w/;
$withpeak = 1 if $target->{withpeak} =~ /w/;
} elsif ($ext eq 'month') {
$t[3] = 1;
$seconds = timelocal(@t);
$back = 36*86400; # 36 days
$oldsec = $seconds - 30*86400; # FIXME (the right # of days!!)
$unscaled = 1 if $target->{unscaled} =~ /m/;
$withpeak = 1 if $target->{withpeak} =~ /m/;
} elsif ($ext eq 'year') {
$t[3] = 1;
$t[4] = 0;
$seconds = timelocal(@t);
$back = 396*86400; # 365 + 31 days
$oldsec = $seconds - 365*86400; # FIXME (the right # of days!!)
$unscaled = 1 if $target->{unscaled} =~ /y/;
$withpeak = 1 if $target->{withpeak} =~ /y/;
} else {
print_error("Unknown file extension: $ext");
}
my @local_args;
if ($unscaled) {
@local_args = ('-u', $target->{maxbytes1});
push @local_args, '--rigid' unless defined $target->{absmax};
}
if ($xgrid) {
push @local_args, '-x', $xgrid;
}
my @local_args_end;
if ($withpeak) {
push @local_args_end, 'LINE1:maxin'.$target->{col3}.':MaxIn'
unless $noi;
push @local_args_end, 'LINE1:maxout'.$target->{col4}.':MaxOut'
unless $noo;
}
my @rv = RRDs::graph($file, '-s', "-$back", @local_args,
@{$target->{args}}, "VRULE:$oldsec#ff0000",
"VRULE:$seconds#ff0000", @local_args_end);
my $rrd_error = RRDs::error;
print_error("RRDs::graph failed, $rrd_error") if defined $rrd_error;
# In array context just return the values
if (wantarray) {
if (defined $target->{factor}) {
@{$rv[0]} = map { $_ * $target->{factor} } @{$rv[0]};
}
if ($noi) {
return ([$rv[0][0], 0, $rv[0][1], 0, $rv[0][2], 0],
$rv[1], $rv[2]);
} elsif ($noo) {
return ([0, $rv[0][0], 0, $rv[0][1], 0, $rv[0][2]],
$rv[1], $rv[2]);
} else {
return @rv;
}
}
# Not in array context ==> print out the PNG file.
open PNG, "<$file" or print_error("Can't open $file: $!");
binmode PNG;
http_headers("image/$imagetype", $target->{config});
my $buf;
# could be sendfile in Linux ;-)
while(sysread PNG, $buf, 8192) {
print $buf;
}
close PNG;
}
sub common_args($$$)
{
my ($name, $target, $q) = @_;
return @{$target->{args}} if defined @{$target->{args}};
my $noi = 1 if $target->{options}{noi};
my $noo = 1 if $target->{options}{noo};
$target->{name} = $name;
$target->{directory} = ''
unless defined $target->{directory};
my $tdir = $target->{directory};
$tdir .= '/'
unless $tdir eq '' || $tdir =~ /\/$/;
$target->{url} = $q->url . '/' . $tdir . $name;
my $cfg = $target->{config};
my $dir = $cfg->{workdir};
$dir = $cfg->{logdir}
if defined $cfg->{logdir};
$target->{rrd} = $dir . '/' . $tdir . $name . '.rrd';
%{$target->{options}} = ()
unless defined %{$target->{options}};
$dir = $cfg->{workdir};
$dir = $cfg->{imagedir}
if defined $cfg->{imagedir};
$target->{suppress} ||= '';
$target->{day} = $dir . '/' . $tdir . $name
. '-day.' . $imagetype unless $target->{suppress} =~ /d/;
$target->{week} = $dir . '/' . $tdir . $name
. '-week.' . $imagetype unless $target->{suppress} =~ /w/;
$target->{month} = $dir . '/' . $tdir . $name
. '-month.' . $imagetype unless $target->{suppress} =~ /m/;
$target->{year} = $dir . '/' . $tdir . $name
. '-year.' . $imagetype unless $target->{suppress} =~ /y/;
$target->{maxbytes1} = $target->{maxbytes}
if defined $target->{maxbytes} && !defined $target->{maxbytes1};
$target->{maxbytes2} = $target->{maxbytes1}
if defined $target->{maxbytes1} && !defined $target->{maxbytes2};
my @args = ();
push @args, '--lazy', '-c', 'FONT#000000', '-c',
'MGRID#000000', '-c', 'FRAME#000000',
'-g', '-l', '0';
$target->{background} = '#f5f5f5'
unless defined $target->{background};
push @args, '-c', 'BACK'. $target->{background};
push @args, '-c', 'SHADEA' . $target->{background},
'-c', 'SHADEB' . $target->{background}
if defined $target->{options}{noborder};
if (defined $target->{options}{noarrow}) {
push @args, '-c', 'ARROW' . $target->{background};
} else {
push @args, '-c', 'ARROW#000000';
}
push @args, '-b', $target->{kilo}
if defined $target->{kilo};
if (defined $target->{xsize}) {
if (defined $target->{xscale}) {
push @args, '-w', $target->{xsize}*$target->{xscale};
} else {
push @args, '-w', $target->{xsize};
}
}
if (defined $target->{ysize}) {
if (defined $target->{yscale}) {
push @args, '-h', $target->{ysize}*$target->{yscale};
} else {
push @args, '-h', $target->{ysize};
}
}
my $scale = 1;
if (defined $target->{options}->{perminute}) {
$scale *= 60;
} elsif (defined $target->{options}->{perhour}) {
$scale *= 3600;
}
if (defined $target->{options}->{bits}) {
$scale *= 8;
$target->{ylegend} = 'Bits per second'
unless defined $target->{ylegend};
$target->{legend1} = 'Incoming Traffic in Bits per Second'
unless defined $target->{legend1};
$target->{legend2} = 'Outgoing Traffic in Bits per Second'
unless defined $target->{legend2};
$target->{legend3} = 'Peak Incoming Traffic in Bits per Second'
unless defined $target->{legend3};
$target->{legend4} = 'Peak Outgoing Traffic in Bits per Second'
unless defined $target->{legend4};
$target->{shortlegend} = 'b/s'
unless defined $target->{shortlegend};
} else {
$target->{ylegend} = 'Bytes per second'
unless defined $target->{ylegend};
$target->{legend1} = 'Incoming Traffic in Bytes per Second'
unless defined $target->{legend1};
$target->{legend2} = 'Outgoing Traffic in Bytes per Second'
unless defined $target->{legend2};
$target->{legend3} = 'Peak Incoming Traffic in Bytes per Second'
unless defined $target->{legend3};
$target->{legend4} = 'Peak Outgoing Traffic in Bytes per Second'
unless defined $target->{legend4};
$target->{shortlegend} = 'B/s'
unless defined $target->{shortlegend};
}
if ($scale > 1) {
push @args, "DEF:in0=$target->{rrd}:ds0:AVERAGE",
"CDEF:in=in0,$scale,*",
"DEF:maxin0=$target->{rrd}:ds0:MAX",
"CDEF:maxin=maxin0,$scale,*"
unless $noi;
push @args, "DEF:out0=$target->{rrd}:ds1:AVERAGE",
"CDEF:out=out0,$scale,*",
"DEF:maxout0=$target->{rrd}:ds1:MAX",
"CDEF:maxout=maxout0,$scale,*"
unless $noo;
} else {
push @args, "DEF:in=$target->{rrd}:ds0:AVERAGE",
"DEF:maxin=$target->{rrd}:ds0:MAX"
unless $noi;
push @args, "DEF:out=$target->{rrd}:ds1:AVERAGE",
"DEF:maxout=$target->{rrd}:ds1:MAX"
unless $noo;
}
my $i=1;
for my $coltext (split(/,/, $target->{colours})) {
my ($text, $rgb) = ($coltext =~ /^([^#]+)(#[0-9a-fA-F]{6})$/);
$target->{'col'.$i} = $rgb;
$target->{'colname'.$i} = $text;
$i++;
}
push @args, '-v', $target->{ylegend};
push @args, 'AREA:in' . $target->{col1} . ':In',
unless $noi;
push @args, 'LINE2:out' . $target->{col2} . ':Out'
unless $noo;
push @args, 'PRINT:out:MAX:%.1lf' unless $noo;
push @args, 'PRINT:in:MAX:%.1lf' unless $noi;
push @args, 'PRINT:out:AVERAGE:%.1lf' unless $noo;
push @args, 'PRINT:in:AVERAGE:%.1lf' unless $noi;
push @args, 'PRINT:out:LAST:%.1lf' unless $noo;
push @args, 'PRINT:in:LAST:%.1lf' unless $noi;
if (defined $target->{maxbytes1}) {
$target->{maxbytes1} *= $scale;
push @args, 'HRULE:' . $target->{maxbytes1} . '#cc0000';
}
if (defined $target->{maxbytes2}) {
$target->{maxbytes2} *= $scale;
push @args, 'HRULE:' . $target->{maxbytes2} . '#cccc00'
if $target->{maxbytes2} != $target->{maxbytes1};
}
@{$target->{args}} = @args;
@args;
}
sub try_read_config($)
{
my ($prefix) = (@_);
$prefix =~ s/\/[^\/]*$//;
# Verify the version of RRDtool:
if (!defined $RRDs::VERSION || $RRDs::VERSION < 1.000331) {
print_error("Please install more up-to date RRDtool - need at least 1.000331");
}
my $read_cfg;
if (!defined $config_time) {
$read_cfg = 1;
} else {
for my $file (@all_config_files) {
my @stat = stat $file;
if ($config_time < $stat[9]) {
$read_cfg = 1;
last;
}
}
}
return unless $read_cfg;
my %defaults = (
xsize => 400,
ysize => 100,
kmg => ',k,M,G,T,P',
kilo => 1000,
bodytag => "<BODY BGCOLOR=#ffffff>\n",
colours => 'GREEN#00cc00,BLUE#0000ff,DARK GREEN#006600,MAGENTA#ff00ff,AMBER#ef9f4f',
legendi => ' In:',
legendo => ' Out:',
unscaled => '',
withpeak => '',
directory => '',
);
%targets = ();
@all_config_files = @config_files;
my $order = 0;
for my $cfgfile (@config_files) {
%{$targets{_}} = %defaults;
%{$targets{'^'}} = ();
%{$targets{'$'}} = ();
my $cfgref = {
refresh => 300,
interval => 5,
icondir => $prefix
};
read_mrtg_config($cfgfile, \%defaults, $cfgref, \$order);
}
parse_directories();
delete $targets{'^'};
delete $targets{_};
delete $targets{'$'};
$config_time = time;
}
sub read_mrtg_config($$$$);
sub read_mrtg_config($$$$)
{
my ($file, $def, $cfgref, $order) = @_;
my %defaults = %$def;
my @lines;
open(CFG, "<$file") || print_error("Cannot open config file: $!");
while (<CFG>) {
chomp; # remove newline
s/\s+$//; # remove trailing space
s/\s+/ /g; # collapse white spaces to ' '
next if /^ *\#/; # skip comment lines
next if /^\s*$/; # skip empty lines
if (/^ \S/) { # multiline options
$lines[$#lines] .= $_;
} else {
push @lines, $_;
}
}
close CFG;
foreach (@lines) {
if (/^\s*([\w\d]+)\[(\S+)\]\s*:\s*(.*)$/) {
my ($tgt, $opt, $val) = (lc($2), lc($1), $3);
unless (exists $targets{$tgt}) {
# pre-set defaults constructed on all of ^, _, and $
for my $key (%{$targets{'^'}}) {
$targets{$tgt}{$key} = $targets{'^'}{$key};
}
for my $key (%{$targets{'$'}}) {
$targets{$tgt}{$key} .= $targets{'$'}{$key};
}
# WARNING: Tobi explicitly said that when all ^, _, and $
# options are set, the result should be just the value
# of the _ option (when the option itself is not explicitly
# defined. I do not agree with him here but I respect this
# and will try to be compatible with MRTG.
for my $key (%{$targets{'_'}}) {
$targets{$tgt}{$key} = $targets{'_'}{$key};
}
# anonymous hash ref - need copy, not ref
delete $targets{$tgt}{options};
# The same as above - we need to create this
# based on [^], [_], and [$] values
%{$targets{$tgt}{options}} = ();
%{$targets{$tgt}{options}} = %{$targets{'^'}{options}}
if defined $targets{'^'}{options};
%{$targets{$tgt}{options}} = (%{$targets{$tgt}{options}},
%{$targets{'_'}{options}})
if defined $targets{'_'}{options};
%{$targets{$tgt}{options}} = (%{$targets{$tgt}{options}},
%{$targets{'$'}{options}})
if defined $targets{'$'}{options};
$targets{$tgt}{order} = ++$$order;
$targets{$tgt}{config} = $cfgref;
}
if ($tgt eq '_' && $val eq '') {
if (defined $defaults{$opt}) {
$targets{_}{$opt} = $defaults{$opt};
} else {
delete $targets{_}{$opt};
}
} elsif (($tgt eq '^' || $tgt eq '$') && $val eq '') {
delete $targets{$tgt}{$opt};
} elsif ($opt eq 'options') {
# Do not forget defaults [^] and [$]
delete $targets{$tgt}{options};
%{$targets{$tgt}{options}} = %{$targets{'^'}{options}}
if defined $targets{'^'}{options};
$val = lc($val);
map { $targets{$tgt}{options}{$_} = 1 } ($val =~ m/([a-z]+)/g);
%{$targets{$tgt}{options}} = (%{$targets{$tgt}{options}},
%{$targets{'$'}{options}})
if defined $targets{'$'}{options};
} else {
my $pre = $targets{'^'}{$opt}
if defined $targets{'^'}{$opt};
$pre ||= '';
$targets{$tgt}{$opt} = $pre.$val;
$targets{$tgt}{$opt} .= $targets{'$'}{$opt}
if defined $targets{'$'}{$opt};
}
next;
} elsif (/^Include\s*:\s*(\S*)$/) {
push @all_config_files, $1;
read_mrtg_config($1, $def, $cfgref, $order);
next;
} elsif (/^([\w\d]+)\s*:\s*(\S.*)$/) {
my ($opt, $val) = (lc($1), $2);
$cfgref->{$opt} = $val;
next;
}
print_error("Parse error in $file near $_");
}
if (defined $cfgref->{pathadd}) {
$ENV{PATH} .= ':'.$cfgref->{pathadd};
}
# if (defined $cfgref->{libadd}) {
# use lib $cfgref->{libadd}
# }
}
sub parse_directories {
%directories = ();
# FIXME: the sort is expensive
for my $name (sort { $targets{$a}{order} <=> $targets{$b}{order} } keys %targets) {
next if $name =~ /^[\$\^_]$/;
my $dir = $targets{$name}{directory}
if defined $targets{$name}{directory};
$dir = '' unless defined $dir;
my $prefix = '';
for my $component (split /\/+/, $dir) {
unless (defined $directories{$prefix.$component}) {
push (@{$directories{$prefix}{subdir}},
$component);
# For the directory, get the global parameters
# from the # config of the first item of the
# directory:
$directories{$prefix}{config} =
$targets{$name}{config};
$directories{$prefix}{bodytag} =
$targets{$name}{bodytag};
$directories{$prefix}{addhead} = $targets{_}{addhead};
$directories{$prefix}{pagetop} = $targets{_}{pagetop};
$directories{$prefix}{pagefoot} = $targets{_}{pagefoot};
}
$prefix .= $component . '/';
}
unless (defined $directories{$dir}) {
$directories{$dir}{config} =
$targets{$name}{config};
$directories{$dir}{bodytag} =
$targets{$name}{bodytag};
$directories{$dir}{addhead} = $targets{_}{addhead};
$directories{$dir}{pagetop} = $targets{_}{pagetop};
$directories{$dir}{pagefoot} = $targets{_}{pagefoot};
}
push (@{$directories{$dir}{target}}, $name);
}
}
sub print_dir($) {
my ($dir) = @_;
my $dir1 = $dir . '/';
http_headers('text/html', $directories{$dir}{config});
print <<EOF;
<HTML>
<HEAD>
<TITLE>MRTG: Directory $dir1</TITLE>
EOF
print $directories{$dir}{addhead} if defined $directories{$dir}{addhead};
print "</HEAD>\n", $directories{$dir}{bodytag};
print $directories{$dir}{pagetop} if defined $directories{$dir}{pagetop};
my $subdirs_printed;
if (defined @{$directories{$dir}{subdir}}) {
$subdirs_printed = 1;
print <<EOF;
<H1>MRTG subdirectories in the directory $dir1</H1>
<UL>
EOF
for my $item (@{$directories{$dir}{subdir}}) {
print "<LI><A HREF=\"$item/\">$item/</A>\n";
}
print "</UL>\n";
}
if (defined @{$directories{$dir}{target}}) {
print "<HR>\n" if defined $subdirs_printed;
print <<EOF;
<H1>MRTG graphs in the directory $dir1</H1>
<TABLE BORDER=0 WIDTH=100%>
EOF
my $odd;
for my $item (@{$directories{$dir}{target}}) {
my $itemname = $item;
$itemname = $targets{$item}{title}
if defined $targets{$item}{title};
print " <TR>\n" unless $odd;
print <<EOF;
<TD><A HREF="$item.html">$itemname<BR>
<IMG SRC="$item-day.$imagetype" BORDER=0 ALIGN=TOP VSPACE=10 ALT="$item">
</A><BR CLEAR=ALL>
</TD>
EOF
print " </TR>\n" if $odd;
$odd = !$odd;
}
print " </TR>\n</TABLE>\n";
}
print_banner($directories{$dir}{config});
print $directories{$dir}{pagefoot} if defined $directories{$dir}{pagefoot};
print "</BODY>\n</HTML>\n";
}
sub print_banner($) {
my $cfg = shift;
print <<EOF;
<HR>
<table BORDER=0 CELLSPACING=0 CELLPADDING=0>
<tr>
<td WIDTH=63><a ALT="MRTG"
HREF="http://ee-staff.ethz.ch/~oetiker/webtools/mrtg/mrtg.html"><img
BORDER=0 SRC="$cfg->{icondir}/mrtg-l.$imagetype"></a></td>
<td WIDTH=25><a ALT=""
HREF="http://ee-staff.ethz.ch/~oetiker/webtools/mrtg/mrtg.html"><img
BORDER=0 SRC="$cfg->{icondir}/mrtg-m.$imagetype"></a></td>
<td WIDTH=388><a ALT=""
HREF="http://ee-staff.ethz.ch/~oetiker/webtools/mrtg/mrtg.html"><img
BORDER=0 SRC="$cfg->{icondir}/mrtg-r.$imagetype"></a></td>
</tr>
</table>
<spacer TYPE=VERTICAL SIZE=4>
<table BORDER=0 CELLSPACING=0 CELLPADDING=0 WIDTH=476>
<tr VALIGN=top>
<td ALIGN=LEFT><font FACE="Arial,Helvetica" SIZE=2>
version 2.9.17</font></td>
<td ALIGN=RIGHT><font FACE="Arial,Helvetica" SIZE=2>
<a HREF="http://ee-staff.ethz.ch/~oetiker/">Tobias Oetiker</a>
<a HREF="mailto:oetiker\@ee.ethz.ch"><oetiker\@ee.ethz.ch></a>
</font></td>
</tr><tr>
<td></td>
<td ALIGN=RIGHT><font FACE="Arial,Helvetica" SIZE=2>
and <a HREF="http://www.bungi.com">Dave Rand</a> <a HREF="mailto:dlr\@bungi.com"><dlr\@bungi.com></a></font>
</td>
<tr VALIGN=top>
<td ALIGN=LEFT><font FACE="Arial,Helvetica" SIZE=2>
<A HREF=http://www.fi.muni.cz/~kas/mrtg-rrd/>mrtg-rrd.cgi version $version</A>
</font></td>
<td ALIGN=RIGHT><font FACE="Arial,Helvetica" SIZE=2>
<A HREF="http://www.fi.muni.cz/~kas/">Jan "Yenya" Kasprzak</A>
<A HREF="mailto:kas\@fi.muni.cz"><kas\@fi.muni.cz></A>
</font></td>
</tr><tr>