1 files changed, 172 insertions, 0 deletions
diff --git a/vendor/spomky-labs/otphp/src/TOTP.php b/vendor/spomky-labs/otphp/src/TOTP.php
new file mode 100644
index 000000000..e9bce9e14
--- /dev/null
+++ b/vendor/spomky-labs/otphp/src/TOTP.php
@@ -0,0 +1,172 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OTPHP;
+
+use InvalidArgumentException;
+use function is_int;
+
+/**
+ * @see \OTPHP\Test\TOTPTest
+ */
+final class TOTP extends OTP implements TOTPInterface
+{
+    public static function create(
+        null|string $secret = null,
+        int $period = self::DEFAULT_PERIOD,
+        string $digest = self::DEFAULT_DIGEST,
+        int $digits = self::DEFAULT_DIGITS,
+        int $epoch = self::DEFAULT_EPOCH
+    ): self {
+        $totp = $secret !== null
+            ? self::createFromSecret($secret)
+            : self::generate()
+        ;
+        $totp->setPeriod($period);
+        $totp->setDigest($digest);
+        $totp->setDigits($digits);
+        $totp->setEpoch($epoch);
+
+        return $totp;
+    }
+
+    public static function createFromSecret(string $secret): self
+    {
+        $totp = new self($secret);
+        $totp->setPeriod(self::DEFAULT_PERIOD);
+        $totp->setDigest(self::DEFAULT_DIGEST);
+        $totp->setDigits(self::DEFAULT_DIGITS);
+        $totp->setEpoch(self::DEFAULT_EPOCH);
+
+        return $totp;
+    }
+
+    public static function generate(): self
+    {
+        return self::createFromSecret(self::generateSecret());
+    }
+
+    public function getPeriod(): int
+    {
+        $value = $this->getParameter('period');
+        is_int($value) || throw new InvalidArgumentException('Invalid "period" parameter.');
+
+        return $value;
+    }
+
+    public function getEpoch(): int
+    {
+        $value = $this->getParameter('epoch');
+        is_int($value) || throw new InvalidArgumentException('Invalid "epoch" parameter.');
+
+        return $value;
+    }
+
+    public function expiresIn(): int
+    {
+        $period = $this->getPeriod();
+
+        return $period - (time() % $this->getPeriod());
+    }
+
+    public function at(int $input): string
+    {
+        return $this->generateOTP($this->timecode($input));
+    }
+
+    public function now(): string
+    {
+        return $this->at(time());
+    }
+
+    /**
+     * If no timestamp is provided, the OTP is verified at the actual timestamp. When used, the leeway parameter will
+     * allow time drift. The passed value is in seconds.
+     */
+    public function verify(string $otp, null|int $timestamp = null, null|int $leeway = null): bool
+    {
+        $timestamp ??= time();
+        $timestamp >= 0 || throw new InvalidArgumentException('Timestamp must be at least 0.');
+
+        if ($leeway === null) {
+            return $this->compareOTP($this->at($timestamp), $otp);
+        }
+
+        $leeway = abs($leeway);
+        $leeway < $this->getPeriod() || throw new InvalidArgumentException(
+            'The leeway must be lower than the TOTP period'
+        );
+
+        return $this->compareOTP($this->at($timestamp - $leeway), $otp)
+            || $this->compareOTP($this->at($timestamp), $otp)
+            || $this->compareOTP($this->at($timestamp + $leeway), $otp);
+    }
+
+    public function getProvisioningUri(): string
+    {
+        $params = [];
+        if ($this->getPeriod() !== 30) {
+            $params['period'] = $this->getPeriod();
+        }
+
+        if ($this->getEpoch() !== 0) {
+            $params['epoch'] = $this->getEpoch();
+        }
+
+        return $this->generateURI('totp', $params);
+    }
+
+    public function setPeriod(int $period): void
+    {
+        $this->setParameter('period', $period);
+    }
+
+    public function setEpoch(int $epoch): void
+    {
+        $this->setParameter('epoch', $epoch);
+    }
+
+    /**
+     * @return array<string, callable>
+     */
+    protected function getParameterMap(): array
+    {
+        return array_merge(
+            parent::getParameterMap(),
+            [
+                'period' => static function ($value): int {
+                    (int) $value > 0 || throw new InvalidArgumentException('Period must be at least 1.');
+
+                    return (int) $value;
+                },
+                'epoch' => static function ($value): int {
+                    (int) $value >= 0 || throw new InvalidArgumentException(
+                        'Epoch must be greater than or equal to 0.'
+                    );
+
+                    return (int) $value;
+                },
+            ]
+        );
+    }
+
+    /**
+     * @param array<string, mixed> $options
+     */
+    protected function filterOptions(array &$options): void
+    {
+        parent::filterOptions($options);
+
+        if (isset($options['epoch']) && $options['epoch'] === 0) {
+            unset($options['epoch']);
+        }
+
+        ksort($options);
+    }
+
+    private function timecode(int $timestamp): int
+    {
+        return (int) floor(($timestamp - $this->getEpoch()) / $this->getPeriod());
+    }
+}