#!/usr/bin/perl
###############################################################################
# #
# IPFire.org - A linux based firewall #
# Copyright (C) 2005-2021 IPFire Team #
# #
# 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 3 of the License, or #
# (at your option) any later version. #
# #
# 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, see . #
# #
###############################################################################
use strict;
use URI;
use Text::Wrap;
use experimental 'smartmatch';
# debugging
#use warnings;
#use CGI::Carp 'fatalsToBrowser';
require '/var/ipfire/general-functions.pl';
require "${General::swroot}/lang.pl";
require "${General::swroot}/header.pl";
require "${General::swroot}/graphs.pl";
# List of graph origins that getrrdimage.cgi can process directly
# (unknown origins are forwarded to ensure compatibility)
my @supported_origins = ("hardwaregraphs.cgi", "media.cgi",
"memory.cgi", "netexternal.cgi", "netinternal.cgi", "netother.cgi",
"netovpnrw.cgi", "netovpnsrv.cgi", "qos.cgi", "services.cgi", "system.cgi");
### Process GET parameters ###
# URL format: /?origin=[graph origin cgi]&graph=[graph name]&range=[time range]
my $uri = URI->new($ENV{'REQUEST_URI'});
my %query = $uri->query_form;
my $origin = lc ($query{'origin'} // ''); # lower case
my $graph = $query{'graph'} // '';
my $range = lc ($query{'range'} // ''); # lower case
# Check parameters
unless(($origin =~ /^\w+?\.cgi$/) && ($graph =~ /^[\w\-.,; ]+?$/) && ($range ~~ @Graphs::time_ranges)) {
# Send HTTP headers
_start_svg_output();
_print_error("URL parameters missing or malformed.");
exit;
}
# Unsupported graph origin: Redirect request to the CGI specified in the "origin" parameter
# This enables backwards compatibility with addons that use Graphs::makegraphbox to ouput their own graphs
unless(($origin ~~ @supported_origins) || ($origin eq "getrrdimage.cgi")) {
# Rewrite to old URL format: /[graph origin cgi]?[graph name]?[time range]
my $location = "https://$ENV{'SERVER_NAME'}:$ENV{'SERVER_PORT'}/cgi-bin/${origin}?${graph}?${range}";
# Send HTTP redirect
print "Status: 302 Found\n";
print "Location: $location\n";
print "Content-type: text/html; charset=UTF-8\n";
print "\n"; # End of HTTP headers
print "Unsupported origin, request redirected to '$location'";
exit;
}
### Create graphs ###
# Send HTTP headers
_start_svg_output();
# Graphs are first grouped by their origin.
# This is because some graph categories require special parameter handling.
my $graphstatus = '';
if($origin eq "hardwaregraphs.cgi") { ## hardwaregraphs.cgi
if($graph eq "hwtemp") {
$graphstatus = Graphs::updatehwtempgraph($range);
} elsif($graph eq "hwfan") {
$graphstatus = Graphs::updatehwfangraph($range);
} elsif($graph eq "hwvolt") {
$graphstatus = Graphs::updatehwvoltgraph($range);
} elsif($graph eq "thermaltemp") {
$graphstatus = Graphs::updatethermaltempgraph($range);
} elsif($graph =~ "sd?") {
$graphstatus = Graphs::updatehddgraph($graph, $range);
} elsif($graph =~ "nvme?") {
$graphstatus = Graphs::updatehddgraph($graph, $range);
} else {
$graphstatus = "Unknown graph name.";
}
# ------
} elsif($origin eq "media.cgi") { ## media.cgi
if ($graph =~ "sd?" || $graph =~ "mmcblk?" || $graph =~ "nvme?n?" || $graph =~ "xvd??" || $graph =~ "vd?" || $graph =~ "md*" ) {
$graphstatus = Graphs::updatediskgraph($graph, $range);
} else {
$graphstatus = "Unknown graph name.";
}
# ------
} elsif($origin eq "memory.cgi") { ## memory.cgi
if($graph eq "memory") {
$graphstatus = Graphs::updatememorygraph($range);
} elsif($graph eq "swap") {
$graphstatus = Graphs::updateswapgraph($range);
} else {
$graphstatus = "Unknown graph name.";
}
# ------
} elsif($origin eq "netexternal.cgi") { ## netexternal.cgi
$graphstatus = Graphs::updateifgraph($graph, $range);
# ------
} elsif($origin eq "netinternal.cgi") { ## netinternal.cgi
if ($graph =~ /wireless/){
$graph =~ s/wireless//g;
$graphstatus = Graphs::updatewirelessgraph($graph, $range);
} else {
$graphstatus = Graphs::updateifgraph($graph, $range);
}
# ------
} elsif($origin eq "netother.cgi") { ## netother.cgi
if($graph eq "conntrack") {
$graphstatus = Graphs::updateconntrackgraph($range);
} elsif($graph eq "fwhits") {
$graphstatus = Graphs::updatefwhitsgraph($range);
} else {
$graphstatus = Graphs::updatepinggraph($graph, $range);
}
# ------
} elsif($origin eq "netovpnrw.cgi") { ## netovpnrw.cgi
if($graph ne "UNDEF") {
$graphstatus = Graphs::updatevpngraph($graph, $range);
} else {
$graphstatus = "Unknown graph name.";
}
# ------
} elsif($origin eq "netovpnsrv.cgi") { ## netovpnsrv.cgi
if ($graph =~ /ipsec-/){
$graph =~ s/ipsec-//g;
$graphstatus = Graphs::updateifgraph($graph, $range);
} else {
$graphstatus = Graphs::updatevpnn2ngraph($graph, $range);
}
# ------
} elsif($origin eq "qos.cgi") { ## qos.cgi
$graphstatus = Graphs::updateqosgraph($graph, $range);
# ------
} elsif($origin eq "services.cgi") { ## services.cgi
if($graph eq "processescpu") {
$graphstatus = Graphs::updateprocessescpugraph($range);
} elsif($graph eq "processesmemory") {
$graphstatus = Graphs::updateprocessesmemorygraph($range);
} else {
$graphstatus = "Unknown graph name.";
}
# ------
} elsif($origin eq "system.cgi") { ## system.cgi
if($graph eq "cpu") {
$graphstatus = Graphs::updatecpugraph($range);
} elsif($graph eq "cpufreq") {
$graphstatus = Graphs::updatecpufreqgraph($range);
} elsif($graph eq "load") {
$graphstatus = Graphs::updateloadgraph($range);
} else {
$graphstatus = "Unknown graph name.";
}
# ------
} else {
$graphstatus = "Unknown graph origin.";
}
### Print error message ###
# Add request parameters for debugging
if($graphstatus) {
$graphstatus = "$graphstatus\n($origin, $graph, $range)";
# Save message in system log for further inspection
General::log($graphstatus);
_print_error($graphstatus);
}
###--- Internal functions ---###
# Send HTTP headers
# (don't print any non-image data to STDOUT afterwards)
sub _start_svg_output {
print "Cache-Control: no-cache, no-store\n";
print "Content-Type: image/svg+xml\n";
print "\n"; # End of HTTP headers
}
# Print error message to SVG output
sub _print_error {
my ($message) = @_;
# Prepare image options
my %img = (
'width' => $Graphs::image_size{'width'},
'height' => $Graphs::image_size{'height'},
'text_center' => int($Graphs::image_size{'width'} / 2),
'line_height' => 20,
'font_family' => "DejaVu Sans, Helvetica, sans-serif" # Matching the IPFire theme
);
# Line-wrap message to fit image (adjust to font width if necessary)
local($Text::Wrap::columns) = int($img{'width'} / 10);
$message = wrap('', '', $message);
# Create new image with fixed background and border
print <
END
;
}