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#
# Monitorix - A lightweight system monitoring tool.
#
# Copyright (C) 2005-2022 by Jordi Sanfeliu <jordi@fibranet.cat>
#
# 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, 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
package emailreports;
use strict;
use warnings;
use Monitorix;
use MIME::Lite;
use LWP::UserAgent;
use Exporter 'import';
our @EXPORT = qw(emailreports_send);
sub emailreports_send {
my $myself = (caller(0))[3];
my ($config, $report, $when, $debug) = @_;
my $emailreports = $config->{emailreports};
my $imgfmt_lc = lc($config->{image_format});
my $base_cgi = $config->{base_cgi};
my $imgs_dir = $config->{imgs_dir};
my $images;
my $mime;
my $subject;
logger("$myself: sending $report reports.");
my $uri = URI->new($emailreports->{url_prefix});
my $scheme = $uri->scheme || "";
my $userinfo = $uri->userinfo || "";
$userinfo .= "@" unless !$userinfo;
my $hostname = $uri->host || "";
my $port = $uri->port || "";
my $prefix = "$scheme://$userinfo$hostname:$port";
$mime = "image/png";
$mime = "image/svg+xml" if uc($config->{image_format}) eq "SVG";
my $html = <<"EOF";
<html>
<head>
<style>
EOF
open(IN, "$config->{base_dir}/css/white.css");
while(<IN>) { $html .= $_; }
close(IN);
$html .= <<"EOF";
</style>
</head>
<table class='cgi-header-table'>
<tr>
<th class='td-title'><b> Host: </b></th>
<td class='td-title-host'>
<b> $hostname </b>
</td>
<td class='td-title' ><b> $report </b></td>
</tr>
</table>
<br>
EOF
my $html_footer = <<EOF;
<p class='text-copyright'>
<a href='https://www.monitorix.org'><img src='cid:image_logo' border='0'></a>
<br>
Copyright © 2005-2022 Jordi Sanfeliu
</body>
</html>
EOF
foreach (split(',', $emailreports->{$report}->{graphs})) {
my $g = trim($_);
my $n;
my $e;
my $ssl = "";
$ssl = "ssl_opts => {verify_hostname => 0}"
if lc($config->{accept_selfsigned_certs}) eq "y";
# generate the graphs and get the html source
my $url = $prefix . $base_cgi . "/monitorix.cgi?mode=localhost&graph=_$g&when=$when&color=white";
my $ua = LWP::UserAgent->new(timeout => 120, $ssl);
$ua->agent($config->{user_agent_id}) if $config->{user_agent_id} || "";
my $response = $ua->request(HTTP::Request->new('GET', $url));
if(!$response->is_success) {
logger("$myself: ERROR: Unable to connect to '$url'.");
logger("$myself: " . $response->status_line);
$html .= "<pre>\n";
$html .= $response->status_line;
$html .= "</pre>\n";
}
my $data = $response->content;
$e = 0;
foreach ($data =~ /<!-- graph table begins -->/gi) {
$data =~ s/\n/@@@/g;
(my $graph) = $data =~ m/<!-- graph table begins -->@@@(.*?)<!-- graph table ends -->/;
if(!$graph) {
logger("$myself: unable to retrieve graphs from '$g'. It's enabled?");
next;
}
$graph =~ s/@@@/\n/g;
$graph =~ s/<a href=.*?>//g;
$graph =~ s/><\/a>/>/g;
# get the images
my @tmp = ();
$n = 1;
foreach (split('\n', $graph)) {
if(/<img src=/) {
push(@tmp, "<img src='cid:image_$g$e$n.$imgfmt_lc' border='0'>");
($url) = $_ =~ m/<img src=['"](.*?)['"] /;
my $uri = URI->new($url);
my $path = $uri->path || "";
$response = $ua->request(HTTP::Request->new('GET', "$prefix$path"));
$images->{"image_$g$e$n.$imgfmt_lc"} = $response->content;
$n++;
} else {
push(@tmp, $_);
}
}
$html .= join("\n", @tmp);
$html .= "<br>";
$data =~ s/<!-- graph table begins -->.*?<!-- graph table ends -->//;
$e++;
}
}
# addendum data included in report
if($emailreports->{$report}->{addendum_script}) {
$html .= <<"EOF";
<table class='table-module' width='1'>
<tr>
<td class='td-title'><b> Addendum data </b></td>
</tr>
<tr>
<td class='td-addendum'>
<pre>
EOF
$html .= `$emailreports->{$report}->{addendum_script}`;
$html .= "\n";
$html .= " </pre>\n";
$html .= " </td>\n";
$html .= " </tr>\n";
$html .= "</table>\n";
}
$html .= $html_footer;
$subject = $emailreports->{subject_prefix} || "Monitorix:";
# create the multipart container and add attachments
foreach (split(',', $emailreports->{$report}->{to})) {
my $to = trim($_);
my $msg = new MIME::Lite(
From => $emailreports->{from_address},
To => $to,
Subject => "$subject '$report' Report",
Type => "multipart/related",
Organization => "Monitorix",
);
$msg->attach(
Type => 'text/html',
Data => $html,
);
$msg->attach(
Type => 'image/png',
Id => 'image_logo',
Path => $config->{base_dir} . $config->{logo_bottom},
);
while (my ($key, $val) = each(%{$images})) {
$msg->attach(
Type => "$mime; name=\"$key\"",
Id => $key,
Data => $val,
);
}
if(lc($emailreports->{method} || "") eq "relay") {
$msg->send();
} else {
$msg->send('smtp', $emailreports->{smtp_hostname}, Timeout => 60);
}
logger("\t$myself: to: $to") if $debug;
}
}
1;
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