401 lines
13 KiB
PHP
401 lines
13 KiB
PHP
<?php
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/**
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* dmarc-srg - A php parser, viewer and summary report generator for incoming DMARC reports.
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* Copyright (C) 2020 Aleksey Andreev (liuch)
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*
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* Available at:
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* https://github.com/liuch/dmarc-srg
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation, either version 3 of the License.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* =========================
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*
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* This file contains SummaryReport class
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*
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* @category API
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* @package DmarcSrg
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* @author Aleksey Andreev (liuch)
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* @license https://www.gnu.org/licenses/gpl-3.0.html GNU/GPLv3
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*/
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namespace Liuch\DmarcSrg\Report;
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use Liuch\DmarcSrg\Statistics;
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use Liuch\DmarcSrg\Exception\SoftException;
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use Liuch\DmarcSrg\Exception\LogicException;
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/**
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* This class is for generating summary data for the specified period and domain
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*/
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class SummaryReport
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{
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private const LAST_WEEK = -1;
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private const LAST_MONTH = -2;
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private $period = 0;
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private $domain = null;
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private $stat = null;
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private $subject = '';
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/**
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* Constructor
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*
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* @param string $period The period for which the report is created
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* Must me one of the following values: `lastweek`, `lastmonth`, and `lastndays:N`
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* where N is the number of days the report is created for
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*/
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public function __construct(string $period)
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{
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switch ($period) {
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case 'lastweek':
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$period = self::LAST_WEEK;
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$subject = ' weekly';
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break;
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case 'lastmonth':
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$period = self::LAST_MONTH;
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$subject = ' monthly';
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break;
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default:
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$ndays = 0;
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$av = explode(':', $period);
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if (count($av) === 2 && $av[0] === 'lastndays') {
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$ndays = intval($av[1]);
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if ($ndays <= 0) {
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throw new SoftException('The parameter "days" has an incorrect value');
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}
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$subject = sprintf(' %d day%s', $ndays, ($ndays > 1 ? 's' : ''));
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}
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$period = $ndays;
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break;
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}
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if (empty($subject)) {
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throw new SoftException('The parameter "period" has an incorrect value');
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}
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$this->period = $period;
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$this->subject = "DMARC{$subject} digest";
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}
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/**
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* Binds a domain to the report
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*
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* @param Domain $domain The domain for which the report is created
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*
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* @return self
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*/
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public function setDomain($domain)
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{
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$this->domain = $domain;
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$this->stat = null;
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return $this;
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}
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/**
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* Returns the report data as an array
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*
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* @return array
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*/
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public function toArray(): array
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{
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$this->ensureData();
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$res = [];
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$stat = $this->stat;
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$range = $stat->range();
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$res['date_range'] = [ 'begin' => $range[0], 'end' => $range[1] ];
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$res['summary'] = $stat->summary();
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$res['sources'] = $stat->ips();
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$res['organizations'] = $stat->organizations();
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return $res;
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}
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/**
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* Returns the subject string. It is used in email messages.
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*
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* @return string
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*/
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public function subject(): string
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{
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return $this->subject;
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}
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/**
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* Returns the report as an array of text strings
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*
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* @return array
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*/
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public function text(): array
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{
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$rdata = $this->reportData();
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$res = [];
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$res[] = '# Domain: ' . $this->domain->fqdn();
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$res[] = ' Range: ' . $rdata['range'];
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$res[] = '';
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$res[] = '## Summary';
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$total = $rdata['summary']['total'];
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$res[] = sprintf(' Total: %d', $total);
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$res[] = sprintf(' DKIM or SPF aligned: %s', self::num2percent($rdata['summary']['aligned'], $total));
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$res[] = sprintf(' Not aligned: %s', self::num2percent($rdata['summary']['n_aligned'], $total));
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$res[] = sprintf(' Organizations: %d', $rdata['summary']['organizations']);
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$res[] = '';
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if (count($rdata['sources']) > 0) {
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$res[] = '## Sources';
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$res[] = sprintf(
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' %-25s %13s %13s %13s',
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'',
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'Total',
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'SPF aligned',
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'DKIM aligned'
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);
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foreach ($rdata['sources'] as &$it) {
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$total = $it['emails'];
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$spf_a = $it['spf_aligned'];
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$dkim_a = $it['dkim_aligned'];
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$spf_str = self::num2percent($spf_a, $total);
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$dkim_str = self::num2percent($dkim_a, $total);
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$res[] = sprintf(
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' %-25s %13d %13s %13s',
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$it['ip'],
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$total,
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$spf_str,
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$dkim_str
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);
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}
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unset($it);
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$res[] = '';
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}
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if (count($rdata['organizations']) > 0) {
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$res[] = '## Organizations';
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$org_len = 15;
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foreach ($rdata['organizations'] as &$org) {
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$org_len = max($org_len, mb_strlen($org['name']));
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}
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unset($org);
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$org_len = min($org_len, 55);
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$res[] = sprintf(" %-{$org_len}s %8s %8s", '', 'emails', 'reports');
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$frm_str = " %-{$org_len}s %8d %8d";
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foreach ($rdata['organizations'] as &$org) {
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$res[] = sprintf(
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$frm_str,
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trim($org['name']),
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$org['emails'],
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$org['reports']
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);
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}
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unset($org);
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$res[] = '';
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}
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return $res;
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}
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/**
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* Returns the report as an array of html strings
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*
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* @return array
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*/
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public function html(): array
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{
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$h2a = 'style="margin:15px 0 5px;"';
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$t2a = 'style="border-collapse:collapse;border-spacing:0;"';
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$c1a = 'style="font-style:italic;"';
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$d1s = 'padding-left:1em;';
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$d2s = 'min-width:4em;';
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$d3s = 'border:1px solid #888;';
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$d4s = 'text-align:right;';
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$d5s = 'padding:.3em;';
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$add_red = function (int $num) {
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return $num > 0 ? 'color:#f00;' : '';
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};
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$add_green = function (int $num) {
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return $num > 0 ? 'color:#080;' : '';
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};
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$rdata = $this->reportData();
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$res = [];
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$res[] = "<h2 {$h2a}>Domain: " . htmlspecialchars($this->domain->fqdn()) . '</h2>';
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$res[] = '<p style="margin:0;">Range: ' . htmlspecialchars($rdata['range']) . '</p>';
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$res[] = "<h3 {$h2a}>Summary</h3>";
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$res[] = '<table>';
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$total = $rdata['summary']['total'];
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$a_cnt = $rdata['summary']['aligned'];
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$n_cnt = $rdata['summary']['n_aligned'];
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$res[] = " <tr><td>Total: </td><td style=\"{$d1s}\">" . $total . '</td></tr>';
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$color = $add_green($a_cnt);
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$res[] = " <tr><td>DKIM or SPF aligned: </td><td style=\"{$d1s}{$color}\">{$a_cnt}</td></tr>";
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$color = $add_red($n_cnt);
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$res[] = " <tr><td>Not aligned: </td><td style=\"{$d1s}{$color}\">{$n_cnt}</td></tr>";
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$res[] = " <tr><td>Organizations: </td><td style=\"{$d1s}\">" .
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$rdata['summary']['organizations'] .
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'</td></tr>';
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$res[] = '</table>';
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$rs2 = 'rowspan="2"';
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$cs3 = 'colspan="3"';
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$s_cnt = count($rdata['sources']);
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if ($s_cnt > 0) {
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$res[] = "<h3 {$h2a}>Sources</h3>";
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$res[] = "<table {$t2a}>";
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$res[] = " <caption {$c1a}>Total records: {$s_cnt}</caption>";
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$res[] = ' <thead>';
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$style = "style=\"{$d3s}{$d5s}\"";
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$res[] = " <tr><th {$rs2} {$style}>IP address</th><th {$rs2} {$style}>Email volume</th>" .
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"<th {$cs3} {$style}>SPF</th><th {$cs3} {$style}>DKIM</th></tr>";
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$style = "style=\"{$d2s}{$d3s}{$d5s}\"";
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$res[] = " <tr><th {$style}>pass</th><th {$style}>fail</th><th {$style}>rate</th>" .
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"<th {$style}>pass</th><th {$style}>fail</th><th {$style}>rate</th></tr>";
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$res[] = ' </thead>';
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$res[] = ' <tbody>';
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foreach ($rdata['sources'] as &$row) {
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$ip = htmlspecialchars($row['ip']);
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$total = $row['emails'];
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$spf_a = $row['spf_aligned'];
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$spf_n = $total - $spf_a;
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$spf_p = sprintf('%.0f%%', $spf_a / $total * 100);
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$dkim_a = $row['dkim_aligned'];
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$dkim_n = $total - $dkim_a;
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$dkim_p = sprintf('%.0f%%', $dkim_a / $total * 100);
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$style = "style=\"{$d3s}{$d5s}";
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$row_str = " <tr><td {$style}\">{$ip}</td><td {$style}{$d4s}\">{$total}</td>";
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$row_str .= "<td {$style}{$d4s}{$add_green($spf_a)}\">{$spf_a}</td>";
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$row_str .= "<td {$style}{$d4s}{$add_red($spf_n)}\">{$spf_n}</td>";
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$row_str .= "<td {$style}{$d4s}\">{$spf_p}</td>";
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$row_str .= "<td {$style}{$d4s}{$add_green($dkim_a)}\">{$dkim_a}</td>";
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$row_str .= "<td {$style}{$d4s}{$add_red($dkim_n)}\">{$dkim_n}</td>";
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$row_str .= "<td {$style}{$d4s}\">{$dkim_p}</td>";
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$res[] = $row_str . '</tr>';
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}
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unset($row);
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$res[] = ' </tbody>';
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$res[] = '</table>';
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}
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$o_cnt = count($rdata['organizations']);
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if ($o_cnt) {
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$res[] = "<h3 {$h2a}>Organizations</h3>";
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$res[] = "<table {$t2a}>";
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$res[] = " <caption {$c1a}>Total records: {$o_cnt}</caption>";
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$res[] = ' <thead>';
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$style = "style=\"{$d3s}{$d5s}\"";
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$res[] = " <tr><th {$style}>Name</th><th {$style}>Emails</th><th {$style}>Reports</th></tr>";
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$res[] = ' </thead>';
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$res[] = ' <tbody>';
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foreach ($rdata['organizations'] as &$row) {
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$name = htmlspecialchars($row['name']);
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$style2 = "style=\"{$d3s}{$d4s}{$d5s}\"";
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$res[] = " <tr><td {$style}>{$name}</td>" .
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"<td {$style2}>{$row['emails']}</td>" .
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"<td {$style2}>{$row['reports']}</td></tr>";
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}
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unset($row);
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$res[] = ' </tbody>';
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$res[] = '</table>';
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}
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return $res;
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}
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/**
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* Returns the percentage with the original number. If $per is 0 then '0' is returned.
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*
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* @param int $per Value
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* @param int $cent Divisor for percentage calculation
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*
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* @return string
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*/
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private static function num2percent(int $per, int $cent): string
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{
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if (!$per) {
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return '0';
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}
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return sprintf('%.0f%%(%d)', $per / $cent * 100, $per);
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}
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/**
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* Generates the report if it has not already been done
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*
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* @return void
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*/
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private function ensureData(): void
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{
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if (!$this->domain) {
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throw new LogicException('No one domain was specified');
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}
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if (!$this->stat) {
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switch ($this->period) {
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case self::LAST_WEEK:
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$this->stat = Statistics::lastWeek($this->domain);
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break;
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case self::LAST_MONTH:
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$this->stat = Statistics::lastMonth($this->domain);
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break;
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default:
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$this->stat = Statistics::lastNDays($this->domain, $this->period);
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break;
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}
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}
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}
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/**
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* Returns prepared data for the report
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*
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* @return array
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*/
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private function reportData(): array
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{
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$this->ensureData();
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$stat = $this->stat;
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$rdata = [];
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$range = $stat->range();
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$cyear = (new \Datetime())->format('Y');
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$dform = ($range[0]->format('Y') !== $cyear || $range[1]->format('Y') !== $cyear) ? 'M d Y' : 'M d';
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$rdata['range'] = $range[0]->format($dform) . ' - ' . $range[1]->format($dform);
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$summ = $stat->summary();
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$total = $summ['emails']['total'];
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$aligned = $summ['emails']['dkim_spf_aligned'] +
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$summ['emails']['dkim_aligned'] +
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$summ['emails']['spf_aligned'];
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$n_aligned = $total - $aligned;
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$rdata['summary'] = [
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'total' => $total,
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'organizations' => $summ['organizations']
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];
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if ($total > 0) {
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$rdata['summary']['aligned'] = $aligned;
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$rdata['summary']['n_aligned'] = $n_aligned;
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} else {
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$rdata['summary']['aligned'] = $aligned;
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$rdata['summary']['n_aligned'] = $aligned;
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}
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$rdata['sources'] = $stat->ips();
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$rdata['organizations'] = $stat->organizations();
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return $rdata;
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}
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}
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