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-rw-r--r--application/clicommands/CheckCommand.php268
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diff --git a/application/clicommands/CheckCommand.php b/application/clicommands/CheckCommand.php
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+<?php
+
+// Icinga Web 2 X.509 Module | (c) 2019 Icinga GmbH | GPLv2
+
+namespace Icinga\Module\X509\Clicommands;
+
+use DateInterval;
+use DateTime;
+use DateTimeInterface;
+use Icinga\Application\Logger;
+use Icinga\Module\X509\Command;
+use Icinga\Module\X509\Common\Database;
+use Icinga\Module\X509\Model\X509Certificate;
+use Icinga\Module\X509\Model\X509Target;
+use ipl\Sql\Expression;
+use ipl\Stdlib\Filter;
+
+class CheckCommand extends Command
+{
+ /**
+ * Check a host's certificate
+ *
+ * This command utilizes this module's database to check if the given host serves valid certificates.
+ *
+ * USAGE
+ *
+ * icingacli x509 check host [options]
+ *
+ * OPTIONS
+ *
+ * You can either pass --ip or --host or both at the same time but at least one is mandatory.
+ *
+ * --ip A hosts IP address
+ * --host A hosts name
+ * --port The port to check in particular
+ * --warning Less remaining time results in state WARNING
+ * Default: 25%
+ * --critical Less remaining time results in state CRITICAL
+ * Default: 10%
+ * --allow-self-signed Ignore if a certificate or its issuer has been
+ * self-signed
+ *
+ * EXAMPLES
+ *
+ * icingacli x509 check host --ip 10.0.10.78
+ * icingacli x509 check host --host mail.example.org
+ * icingacli x509 check host --ip 10.0.10.78 --host mail.example.org --port 993
+ *
+ * THRESHOLD DEFINITION
+ *
+ * Thresholds can either be defined relative (in percent) or absolute
+ * (time interval). Time intervals consist of a digit and an accompanying
+ * unit (e.g. "3M" are three months). Supported units are:
+ *
+ * Year: y, Y
+ * Month: M
+ * Day: d, D
+ * Hour: h, H
+ * Minute: m
+ * Second: s, S
+ */
+ public function hostAction()
+ {
+ $ip = $this->params->get('ip');
+ $hostname = $this->params->get('host');
+ if ($ip === null && $hostname === null) {
+ $this->showUsage('host');
+ exit(3);
+ }
+
+ $targets = X509Target::on(Database::get())->with([
+ 'chain',
+ 'chain.certificate',
+ 'chain.certificate.issuer_certificate'
+ ]);
+
+ $targets->getWith()['target.chain.certificate.issuer_certificate']->setJoinType('LEFT');
+
+ $targets->columns([
+ 'port',
+ 'chain.valid',
+ 'chain.invalid_reason',
+ 'subject' => 'chain.certificate.subject',
+ 'self_signed' => new Expression('COALESCE(%s, %s)', [
+ 'chain.certificate.issuer_certificate.self_signed',
+ 'chain.certificate.self_signed'
+ ])
+ ]);
+
+ // Sub query for `valid_from` column
+ $validFrom = $targets->createSubQuery(new X509Certificate(), 'chain.certificate');
+ $validFrom
+ ->columns([new Expression('MAX(GREATEST(%s, %s))', ['valid_from', 'issuer_certificate.valid_from'])])
+ ->getSelectBase()
+ ->resetWhere()
+ ->where(new Expression('sub_certificate_link.certificate_chain_id = target_chain.id'));
+
+ // Sub query for `valid_to` column
+ $validTo = $targets->createSubQuery(new X509Certificate(), 'chain.certificate');
+ $validTo
+ ->columns([new Expression('MIN(LEAST(%s, %s))', ['valid_to', 'issuer_certificate.valid_to'])])
+ ->getSelectBase()
+ // Reset the where clause generated within the createSubQuery() method.
+ ->resetWhere()
+ ->where(new Expression('sub_certificate_link.certificate_chain_id = target_chain.id'));
+
+ list($validFromSelect, $_) = $validFrom->dump();
+ list($validToSelect, $_) = $validTo->dump();
+ $targets
+ ->withColumns([
+ 'valid_from' => new Expression($validFromSelect),
+ 'valid_to' => new Expression($validToSelect)
+ ])
+ ->getSelectBase()
+ ->where(new Expression('target_chain_link.order = 0'));
+
+ if ($ip !== null) {
+ $targets->filter(Filter::equal('ip', $ip));
+ }
+ if ($hostname !== null) {
+ $targets->filter(Filter::equal('hostname', $hostname));
+ }
+ if ($this->params->has('port')) {
+ $targets->filter(Filter::equal('port', $this->params->get('port')));
+ }
+
+ $allowSelfSigned = (bool) $this->params->get('allow-self-signed', false);
+ $warningThreshold = $this->splitThreshold($this->params->get('warning', '25%'));
+ $criticalThreshold = $this->splitThreshold($this->params->get('critical', '10%'));
+
+ $output = [];
+ $perfData = [];
+
+ $state = 3;
+ foreach ($targets as $target) {
+ if (! $target->chain->valid && (! $target['self_signed'] || ! $allowSelfSigned)) {
+ $invalidMessage = $target['subject'] . ': ' . $target->chain->invalid_reason;
+ $output[$invalidMessage] = $invalidMessage;
+ $state = 2;
+ }
+
+ $now = new DateTime();
+ $validFrom = DateTime::createFromFormat('U.u', sprintf('%F', $target->valid_from / 1000.0));
+ $validTo = DateTime::createFromFormat('U.u', sprintf('%F', $target->valid_to / 1000.0));
+ $criticalAfter = $this->thresholdToDateTime($validFrom, $validTo, $criticalThreshold);
+ $warningAfter = $this->thresholdToDateTime($validFrom, $validTo, $warningThreshold);
+
+ if ($now > $criticalAfter) {
+ $state = 2;
+ } elseif ($state !== 2 && $now > $warningAfter) {
+ $state = 1;
+ } elseif ($state === 3) {
+ $state = 0;
+ }
+
+ $remainingTime = $now->diff($validTo);
+ if (! $remainingTime->invert) {
+ // The certificate has not expired yet
+ $output[$target->subject] = sprintf(
+ '%s expires in %d days',
+ $target->subject,
+ $remainingTime->days
+ );
+ } else {
+ $output[$target->subject] = sprintf(
+ '%s has expired since %d days',
+ $target->subject,
+ $remainingTime->days
+ );
+ }
+
+ $perfData[$target->subject] = sprintf(
+ "'%s'=%ds;%d:;%d:;0;%d",
+ $target->subject,
+ $remainingTime->invert
+ ? 0
+ : $validTo->getTimestamp() - time(),
+ $validTo->getTimestamp() - $warningAfter->getTimestamp(),
+ $validTo->getTimestamp() - $criticalAfter->getTimestamp(),
+ $validTo->getTimestamp() - $validFrom->getTimestamp()
+ );
+ }
+
+ echo ['OK', 'WARNING', 'CRITICAL', 'UNKNOWN'][$state];
+ echo ' - ';
+
+ if (! empty($output)) {
+ echo join('; ', $output);
+ } elseif ($state === 3) {
+ echo 'Host not found';
+ }
+
+ if (! empty($perfData)) {
+ echo '|' . join(' ', $perfData);
+ }
+
+ echo PHP_EOL;
+ exit($state);
+ }
+
+ /**
+ * Parse the given threshold definition
+ *
+ * @param string $threshold
+ *
+ * @return int|DateInterval
+ */
+ protected function splitThreshold(string $threshold)
+ {
+ $match = preg_match('/(\d+)([%\w]{1})/', $threshold, $matches);
+ if (! $match) {
+ Logger::error('Invalid threshold definition: %s', $threshold);
+ exit(3);
+ }
+
+ switch ($matches[2]) {
+ case '%':
+ return (int) $matches[1];
+ case 'y':
+ case 'Y':
+ $intervalSpec = 'P' . $matches[1] . 'Y';
+ break;
+ case 'M':
+ $intervalSpec = 'P' . $matches[1] . 'M';
+ break;
+ case 'd':
+ case 'D':
+ $intervalSpec = 'P' . $matches[1] . 'D';
+ break;
+ case 'h':
+ case 'H':
+ $intervalSpec = 'PT' . $matches[1] . 'H';
+ break;
+ case 'm':
+ $intervalSpec = 'PT' . $matches[1] . 'M';
+ break;
+ case 's':
+ case 'S':
+ $intervalSpec = 'PT' . $matches[1] . 'S';
+ break;
+ default:
+ Logger::error('Unknown threshold unit given: %s', $threshold);
+ exit(3);
+ }
+
+ return new DateInterval($intervalSpec);
+ }
+
+ /**
+ * Convert the given threshold information to a DateTime object
+ *
+ * @param DateTime $from
+ * @param DateTime $to
+ * @param int|DateInterval $thresholdValue
+ *
+ * @return DateTimeInterface
+ */
+ protected function thresholdToDateTime(DateTime $from, DateTime $to, $thresholdValue): DateTimeInterface
+ {
+ $to = clone $to;
+ if ($thresholdValue instanceof DateInterval) {
+ return $to->sub($thresholdValue);
+ }
+
+ $coveredDays = (int) round($from->diff($to)->days * ($thresholdValue / 100));
+ return $to->sub(new DateInterval('P' . $coveredDays . 'D'));
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-13 13:30:05 +0000