initial

14 files changed, 740 insertions, 0 deletions

diff --git a/vendor/aws/aws-sdk-php/src/Arn/AccessPointArn.php b/vendor/aws/aws-sdk-php/src/Arn/AccessPointArn.php
new file mode 100644
index 0000000..e7b88ee
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/AccessPointArn.php
@@ -0,0 +1,66 @@
+<?php
+namespace Aws\Arn;
+
+use Aws\Arn\Exception\InvalidArnException;
+
+/**
+ * @internal
+ */
+class AccessPointArn extends Arn implements AccessPointArnInterface
+{
+    use ResourceTypeAndIdTrait;
+
+    /**
+     * AccessPointArn constructor
+     *
+     * @param $data
+     */
+    public function __construct($data)
+    {
+        parent::__construct($data);
+        static::validate($this->data);
+    }
+
+    public static function parse($string)
+    {
+        $data = parent::parse($string);
+        $data = self::parseResourceTypeAndId($data);
+        $data['accesspoint_name'] = $data['resource_id'];
+        return $data;
+    }
+
+    public function getAccesspointName()
+    {
+        return $this->data['accesspoint_name'];
+    }
+
+    /**
+     * Validation specific to AccessPointArn
+     *
+     * @param array $data
+     */
+    protected static function validate(array $data)
+    {
+        self::validateRegion($data, 'access point ARN');
+        self::validateAccountId($data, 'access point ARN');
+
+        if ($data['resource_type'] !== 'accesspoint') {
+            throw new InvalidArnException("The 6th component of an access point ARN"
+                . " represents the resource type and must be 'accesspoint'.");
+        }
+
+        if (empty($data['resource_id'])) {
+            throw new InvalidArnException("The 7th component of an access point ARN"
+                . " represents the resource ID and must not be empty.");
+        }
+        if (strpos($data['resource_id'], ':') !== false) {
+            throw new InvalidArnException("The resource ID component of an access"
+                . " point ARN must not contain additional components"
+                . " (delimited by ':').");
+        }
+        if (!self::isValidHostLabel($data['resource_id'])) {
+            throw new InvalidArnException("The resource ID in an access point ARN"
+                . " must be a valid host label value.");
+        }
+    }
+}
diff --git a/vendor/aws/aws-sdk-php/src/Arn/AccessPointArnInterface.php b/vendor/aws/aws-sdk-php/src/Arn/AccessPointArnInterface.php
new file mode 100644
index 0000000..9eb5f2b
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/AccessPointArnInterface.php
@@ -0,0 +1,10 @@
+<?php
+namespace Aws\Arn;
+
+/**
+ * @internal
+ */
+interface AccessPointArnInterface extends ArnInterface
+{
+    public function getAccesspointName();
+}
diff --git a/vendor/aws/aws-sdk-php/src/Arn/Arn.php b/vendor/aws/aws-sdk-php/src/Arn/Arn.php
new file mode 100644
index 0000000..50367c6
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/Arn.php
@@ -0,0 +1,188 @@
+<?php
+namespace Aws\Arn;
+
+use Aws\Arn\Exception\InvalidArnException;
+
+/**
+ * Amazon Resource Names (ARNs) uniquely identify AWS resources. The Arn class
+ * parses and stores a generic ARN object representation that can apply to any
+ * service resource.
+ *
+ * @internal
+ */
+class Arn implements ArnInterface
+{
+    protected $data;
+    protected $string;
+
+    public static function parse($string)
+    {
+        $data = [
+            'arn' => null,
+            'partition' => null,
+            'service' => null,
+            'region' => null,
+            'account_id' => null,
+            'resource' => null,
+        ];
+
+        $length = strlen($string);
+        $lastDelim = 0;
+        $numComponents = 0;
+        for ($i = 0; $i < $length; $i++) {
+
+            if (($numComponents < 5 && $string[$i] === ':')) {
+                // Split components between delimiters
+                $data[key($data)] = substr($string, $lastDelim, $i - $lastDelim);
+
+                // Do not include delimiter character itself
+                $lastDelim = $i + 1;
+                next($data);
+                $numComponents++;
+            }
+
+            if ($i === $length - 1) {
+                // Put the remainder in the last component.
+                if (in_array($numComponents, [5])) {
+                    $data['resource'] = substr($string, $lastDelim);
+                } else {
+                    // If there are < 5 components, put remainder in current
+                    // component.
+                    $data[key($data)] = substr($string, $lastDelim);
+                }
+            }
+        }
+
+        return $data;
+    }
+
+    public function __construct($data)
+    {
+        if (is_array($data)) {
+            $this->data = $data;
+        } elseif (is_string($data)) {
+            $this->data = static::parse($data);
+        } else {
+            throw new InvalidArnException('Constructor accepts a string or an'
+                . ' array as an argument.');
+        }
+
+        static::validate($this->data);
+    }
+
+    public function __toString()
+    {
+        if (!isset($this->string)) {
+            $components = [
+                $this->getPrefix(),
+                $this->getPartition(),
+                $this->getService(),
+                $this->getRegion(),
+                $this->getAccountId(),
+                $this->getResource(),
+            ];
+
+            $this->string = implode(':', $components);
+        }
+        return $this->string;
+    }
+
+    public function getPrefix()
+    {
+        return $this->data['arn'];
+    }
+
+    public function getPartition()
+    {
+        return $this->data['partition'];
+    }
+
+    public function getService()
+    {
+        return $this->data['service'];
+    }
+
+    public function getRegion()
+    {
+        return $this->data['region'];
+    }
+
+    public function getAccountId()
+    {
+        return $this->data['account_id'];
+    }
+
+    public function getResource()
+    {
+        return $this->data['resource'];
+    }
+
+    public function toArray()
+    {
+        return $this->data;
+    }
+
+    /**
+     * Minimally restrictive generic ARN validation
+     *
+     * @param array $data
+     */
+    protected static function validate(array $data)
+    {
+        if ($data['arn'] !== 'arn') {
+            throw new InvalidArnException("The 1st component of an ARN must be"
+                . " 'arn'.");
+        }
+
+        if (empty($data['partition'])) {
+            throw new InvalidArnException("The 2nd component of an ARN"
+                . " represents the partition and must not be empty.");
+        }
+
+        if (empty($data['service'])) {
+            throw new InvalidArnException("The 3rd component of an ARN"
+                . " represents the service and must not be empty.");
+        }
+
+        if (empty($data['resource'])) {
+            throw new InvalidArnException("The 6th component of an ARN"
+                . " represents the resource information and must not be empty."
+                . " Individual service ARNs may include additional delimiters"
+                . " to further qualify resources.");
+        }
+    }
+
+    protected static function validateAccountId($data, $arnName)
+    {
+        if (!self::isValidHostLabel($data['account_id'])) {
+            throw new InvalidArnException("The 5th component of a {$arnName}"
+                . " is required, represents the account ID, and"
+                . " must be a valid host label.");
+        }
+    }
+
+    protected static function validateRegion($data, $arnName)
+    {
+        if (empty($data['region'])) {
+            throw new InvalidArnException("The 4th component of a {$arnName}"
+                . " represents the region and must not be empty.");
+        }
+    }
+
+    /**
+     * Validates whether a string component is a valid host label
+     *
+     * @param $string
+     * @return bool
+     */
+    protected static function isValidHostLabel($string)
+    {
+        if (empty($string) || strlen($string) > 63) {
+            return false;
+        }
+        if ($value = preg_match("/^[a-zA-Z0-9-]+$/", $string)) {
+            return true;
+        }
+        return false;
+    }
+}
\ No newline at end of file
diff --git a/vendor/aws/aws-sdk-php/src/Arn/ArnInterface.php b/vendor/aws/aws-sdk-php/src/Arn/ArnInterface.php
new file mode 100644
index 0000000..c30c6cc
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/ArnInterface.php
@@ -0,0 +1,37 @@
+<?php
+namespace Aws\Arn;
+
+/**
+ * Amazon Resource Names (ARNs) uniquely identify AWS resources. Classes
+ * implementing ArnInterface parse and store an ARN object representation.
+ *
+ * Valid ARN formats include:
+ *
+ *   arn:partition:service:region:account-id:resource-id
+ *   arn:partition:service:region:account-id:resource-type/resource-id
+ *   arn:partition:service:region:account-id:resource-type:resource-id
+ *
+ * Some components may be omitted, depending on the service and resource type.
+ *
+ * @internal
+ */
+interface ArnInterface
+{
+    public static function parse($string);
+
+    public function __toString();
+
+    public function getPrefix();
+
+    public function getPartition();
+
+    public function getService();
+
+    public function getRegion();
+
+    public function getAccountId();
+
+    public function getResource();
+
+    public function toArray();
+}
\ No newline at end of file
diff --git a/vendor/aws/aws-sdk-php/src/Arn/ArnParser.php b/vendor/aws/aws-sdk-php/src/Arn/ArnParser.php
new file mode 100644
index 0000000..331c507
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/ArnParser.php
@@ -0,0 +1,69 @@
+<?php
+namespace Aws\Arn;
+
+use Aws\Arn\S3\AccessPointArn as S3AccessPointArn;
+use Aws\Arn\ObjectLambdaAccessPointArn;
+use Aws\Arn\S3\MultiRegionAccessPointArn;
+use Aws\Arn\S3\OutpostsBucketArn;
+use Aws\Arn\S3\RegionalBucketArn;
+use Aws\Arn\S3\OutpostsAccessPointArn;
+
+/**
+ * This class provides functionality to parse ARN strings and return a
+ * corresponding ARN object. ARN-parsing logic may be subject to change in the
+ * future, so this should not be relied upon for external customer usage.
+ *
+ * @internal
+ */
+class ArnParser
+{
+    /**
+     * @param $string
+     * @return bool
+     */
+    public static function isArn($string)
+    {
+        return $string !== null && strpos($string, 'arn:') === 0;
+    }
+
+    /**
+     * Parses a string and returns an instance of ArnInterface. Returns a
+     * specific type of Arn object if it has a specific class representation
+     * or a generic Arn object if not.
+     *
+     * @param $string
+     * @return ArnInterface
+     */
+    public static function parse($string)
+    {
+        $data = Arn::parse($string);
+        if ($data['service'] === 's3-object-lambda') {
+            return new ObjectLambdaAccessPointArn($string);
+        }
+        $resource = self::explodeResourceComponent($data['resource']);
+        if ($resource[0] === 'outpost') {
+            if (isset($resource[2]) && $resource[2] === 'bucket') {
+                return new OutpostsBucketArn($string);
+            }
+            if (isset($resource[2]) && $resource[2] === 'accesspoint') {
+                return new OutpostsAccessPointArn($string);
+            }
+        }
+        if (empty($data['region'])) {
+            return new MultiRegionAccessPointArn($string);
+        }
+        if ($resource[0] === 'accesspoint') {
+            if ($data['service'] === 's3') {
+                return new S3AccessPointArn($string);
+            }
+            return new AccessPointArn($string);
+        }
+
+        return new Arn($data);
+    }
+
+    private static function explodeResourceComponent($resource)
+    {
+        return preg_split("/[\/:]/", $resource);
+    }
+}
diff --git a/vendor/aws/aws-sdk-php/src/Arn/Exception/InvalidArnException.php b/vendor/aws/aws-sdk-php/src/Arn/Exception/InvalidArnException.php
new file mode 100644
index 0000000..8690f75
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/Exception/InvalidArnException.php
@@ -0,0 +1,7 @@
+<?php
+namespace Aws\Arn\Exception;
+
+/**
+ * Represents a failed attempt to construct an Arn
+ */
+class InvalidArnException extends \RuntimeException {}
diff --git a/vendor/aws/aws-sdk-php/src/Arn/ObjectLambdaAccessPointArn.php b/vendor/aws/aws-sdk-php/src/Arn/ObjectLambdaAccessPointArn.php
new file mode 100644
index 0000000..48a0667
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/ObjectLambdaAccessPointArn.php
@@ -0,0 +1,35 @@
+<?php
+namespace Aws\Arn;
+
+/**
+ * This class represents an S3 Object bucket ARN, which is in the
+ * following format:
+ *
+ * @internal
+ */
+class ObjectLambdaAccessPointArn extends AccessPointArn
+{
+    /**
+     * Parses a string into an associative array of components that represent
+     * a ObjectLambdaAccessPointArn
+     *
+     * @param $string
+     * @return array
+     */
+    public static function parse($string)
+    {
+        $data = parent::parse($string);
+        return parent::parseResourceTypeAndId($data);
+    }
+
+    /**
+     *
+     * @param array $data
+     */
+    protected static function validate(array $data)
+    {
+        parent::validate($data);
+        self::validateRegion($data, 'S3 Object Lambda ARN');
+        self::validateAccountId($data, 'S3 Object Lambda ARN');
+    }
+}
diff --git a/vendor/aws/aws-sdk-php/src/Arn/ResourceTypeAndIdTrait.php b/vendor/aws/aws-sdk-php/src/Arn/ResourceTypeAndIdTrait.php
new file mode 100644
index 0000000..424974f
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/ResourceTypeAndIdTrait.php
@@ -0,0 +1,30 @@
+<?php
+namespace Aws\Arn;
+
+/**
+ * @internal
+ */
+trait ResourceTypeAndIdTrait
+{
+    public function getResourceType()
+    {
+        return $this->data['resource_type'];
+    }
+
+    public function getResourceId()
+    {
+        return $this->data['resource_id'];
+    }
+
+    protected static function parseResourceTypeAndId(array $data)
+    {
+        $resourceData = preg_split("/[\/:]/", $data['resource'], 2);
+        $data['resource_type'] = isset($resourceData[0])
+            ? $resourceData[0]
+            : null;
+        $data['resource_id'] = isset($resourceData[1])
+            ? $resourceData[1]
+            : null;
+        return $data;
+    }
+}
\ No newline at end of file
diff --git a/vendor/aws/aws-sdk-php/src/Arn/S3/AccessPointArn.php b/vendor/aws/aws-sdk-php/src/Arn/S3/AccessPointArn.php
new file mode 100644
index 0000000..5841d90
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/S3/AccessPointArn.php
@@ -0,0 +1,27 @@
+<?php
+namespace Aws\Arn\S3;
+
+use Aws\Arn\AccessPointArn as BaseAccessPointArn;
+use Aws\Arn\AccessPointArnInterface;
+use Aws\Arn\ArnInterface;
+use Aws\Arn\Exception\InvalidArnException;
+
+/**
+ * @internal
+ */
+class AccessPointArn extends BaseAccessPointArn implements AccessPointArnInterface
+{
+    /**
+     * Validation specific to AccessPointArn
+     *
+     * @param array $data
+     */
+    public static function validate(array $data)
+    {
+        parent::validate($data);
+        if ($data['service'] !== 's3') {
+            throw new InvalidArnException("The 3rd component of an S3 access"
+                . " point ARN represents the region and must be 's3'.");
+        }
+    }
+}
\ No newline at end of file
diff --git a/vendor/aws/aws-sdk-php/src/Arn/S3/BucketArnInterface.php b/vendor/aws/aws-sdk-php/src/Arn/S3/BucketArnInterface.php
new file mode 100644
index 0000000..1be0586
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/S3/BucketArnInterface.php
@@ -0,0 +1,12 @@
+<?php
+namespace Aws\Arn\S3;
+
+use Aws\Arn\ArnInterface;
+
+/**
+ * @internal
+ */
+interface BucketArnInterface extends ArnInterface
+{
+    public function getBucketName();
+}
diff --git a/vendor/aws/aws-sdk-php/src/Arn/S3/MultiRegionAccessPointArn.php b/vendor/aws/aws-sdk-php/src/Arn/S3/MultiRegionAccessPointArn.php
new file mode 100644
index 0000000..401ab0c
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/S3/MultiRegionAccessPointArn.php
@@ -0,0 +1,38 @@
+<?php
+namespace Aws\Arn\S3;
+
+use Aws\Arn\Arn;
+use Aws\Arn\ResourceTypeAndIdTrait;
+
+/**
+ * This class represents an S3 multi-region bucket ARN, which is in the
+ * following format:
+ *
+ * @internal
+ */
+class MultiRegionAccessPointArn extends AccessPointArn
+{
+    use ResourceTypeAndIdTrait;
+
+    /**
+     * Parses a string into an associative array of components that represent
+     * a MultiRegionArn
+     *
+     * @param $string
+     * @return array
+     */
+    public static function parse($string)
+    {
+        return parent::parse($string);
+    }
+
+    /**
+     *
+     * @param array $data
+     */
+    public static function validate(array $data)
+    {
+        Arn::validate($data);
+    }
+
+}
diff --git a/vendor/aws/aws-sdk-php/src/Arn/S3/OutpostsAccessPointArn.php b/vendor/aws/aws-sdk-php/src/Arn/S3/OutpostsAccessPointArn.php
new file mode 100644
index 0000000..b77745d
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/S3/OutpostsAccessPointArn.php
@@ -0,0 +1,110 @@
+<?php
+namespace Aws\Arn\S3;
+
+use Aws\Arn\AccessPointArn as BaseAccessPointArn;
+use Aws\Arn\AccessPointArnInterface;
+use Aws\Arn\Arn;
+use Aws\Arn\Exception\InvalidArnException;
+
+/**
+ * This class represents an S3 Outposts access point ARN, which is in the
+ * following format:
+ *
+ * arn:{partition}:s3-outposts:{region}:{accountId}:outpost:{outpostId}:accesspoint:{accesspointName}
+ *
+ * ':' and '/' can be used interchangeably as delimiters for components after
+ * the account ID.
+ *
+ * @internal
+ */
+class OutpostsAccessPointArn extends BaseAccessPointArn implements
+    AccessPointArnInterface,
+    OutpostsArnInterface
+{
+    public static function parse($string)
+    {
+        $data = parent::parse($string);
+        return self::parseOutpostData($data);
+    }
+
+    public function getOutpostId()
+    {
+        return $this->data['outpost_id'];
+    }
+
+    public function getAccesspointName()
+    {
+        return $this->data['accesspoint_name'];
+    }
+
+    private static function parseOutpostData(array $data)
+    {
+        $resourceData = preg_split("/[\/:]/", $data['resource_id']);
+
+        $data['outpost_id'] = isset($resourceData[0])
+            ? $resourceData[0]
+            : null;
+        $data['accesspoint_type'] = isset($resourceData[1])
+            ? $resourceData[1]
+            : null;
+        $data['accesspoint_name'] = isset($resourceData[2])
+            ? $resourceData[2]
+            : null;
+        if (isset($resourceData[3])) {
+            $data['resource_extra'] = implode(':', array_slice($resourceData, 3));
+        }
+
+        return $data;
+    }
+
+    /**
+     * Validation specific to OutpostsAccessPointArn. Note this uses the base Arn
+     * class validation instead of the direct parent due to it having slightly
+     * differing requirements from its parent.
+     *
+     * @param array $data
+     */
+    public static function validate(array $data)
+    {
+        Arn::validate($data);
+
+        if (($data['service'] !== 's3-outposts')) {
+            throw new InvalidArnException("The 3rd component of an S3 Outposts"
+                . " access point ARN represents the service and must be"
+                . " 's3-outposts'.");
+        }
+
+        self::validateRegion($data, 'S3 Outposts access point ARN');
+        self::validateAccountId($data, 'S3 Outposts access point ARN');
+
+        if (($data['resource_type'] !== 'outpost')) {
+            throw new InvalidArnException("The 6th component of an S3 Outposts"
+                . " access point ARN represents the resource type and must be"
+                . " 'outpost'.");
+        }
+
+        if (!self::isValidHostLabel($data['outpost_id'])) {
+            throw new InvalidArnException("The 7th component of an S3 Outposts"
+                . " access point ARN is required, represents the outpost ID, and"
+                . " must be a valid host label.");
+        }
+
+        if ($data['accesspoint_type'] !== 'accesspoint') {
+            throw new InvalidArnException("The 8th component of an S3 Outposts"
+                . " access point ARN must be 'accesspoint'");
+        }
+
+        if (!self::isValidHostLabel($data['accesspoint_name'])) {
+            throw new InvalidArnException("The 9th component of an S3 Outposts"
+                . " access point ARN is required, represents the accesspoint name,"
+                . " and must be a valid host label.");
+        }
+
+        if (!empty($data['resource_extra'])) {
+            throw new InvalidArnException("An S3 Outposts access point ARN"
+                . " should only have 9 components, delimited by the characters"
+                . " ':' and '/'. '{$data['resource_extra']}' was found after the"
+                . " 9th component.");
+        }
+    }
+}
diff --git a/vendor/aws/aws-sdk-php/src/Arn/S3/OutpostsArnInterface.php b/vendor/aws/aws-sdk-php/src/Arn/S3/OutpostsArnInterface.php
new file mode 100644
index 0000000..20285e0
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/S3/OutpostsArnInterface.php
@@ -0,0 +1,12 @@
+<?php
+namespace Aws\Arn\S3;
+
+use Aws\Arn\ArnInterface;
+
+/**
+ * @internal
+ */
+interface OutpostsArnInterface extends ArnInterface
+{
+    public function getOutpostId();
+}
diff --git a/vendor/aws/aws-sdk-php/src/Arn/S3/OutpostsBucketArn.php b/vendor/aws/aws-sdk-php/src/Arn/S3/OutpostsBucketArn.php
new file mode 100644
index 0000000..7236a58
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Arn/S3/OutpostsBucketArn.php
@@ -0,0 +1,99 @@
+<?php
+namespace Aws\Arn\S3;
+
+use Aws\Arn\Arn;
+use Aws\Arn\Exception\InvalidArnException;
+use Aws\Arn\ResourceTypeAndIdTrait;
+
+/**
+ * This class represents an S3 Outposts bucket ARN, which is in the
+ * following format:
+ *
+ * @internal
+ */
+class OutpostsBucketArn extends Arn implements
+    BucketArnInterface,
+    OutpostsArnInterface
+{
+    use ResourceTypeAndIdTrait;
+
+    /**
+     * Parses a string into an associative array of components that represent
+     * a OutpostsBucketArn
+     *
+     * @param $string
+     * @return array
+     */
+    public static function parse($string)
+    {
+        $data = parent::parse($string);
+        $data = self::parseResourceTypeAndId($data);
+        return self::parseOutpostData($data);
+    }
+
+    public function getBucketName()
+    {
+        return $this->data['bucket_name'];
+    }
+
+    public function getOutpostId()
+    {
+        return $this->data['outpost_id'];
+    }
+
+    private static function parseOutpostData(array $data)
+    {
+        $resourceData = preg_split("/[\/:]/", $data['resource_id'], 3);
+
+        $data['outpost_id'] = isset($resourceData[0])
+            ? $resourceData[0]
+            : null;
+        $data['bucket_label'] = isset($resourceData[1])
+            ? $resourceData[1]
+            : null;
+        $data['bucket_name'] = isset($resourceData[2])
+            ? $resourceData[2]
+            : null;
+
+        return $data;
+    }
+
+    /**
+     *
+     * @param array $data
+     */
+    public static function validate(array $data)
+    {
+        Arn::validate($data);
+
+        if (($data['service'] !== 's3-outposts')) {
+            throw new InvalidArnException("The 3rd component of an S3 Outposts"
+                . " bucket ARN represents the service and must be 's3-outposts'.");
+        }
+
+        self::validateRegion($data, 'S3 Outposts bucket ARN');
+        self::validateAccountId($data, 'S3 Outposts bucket ARN');
+
+        if (($data['resource_type'] !== 'outpost')) {
+            throw new InvalidArnException("The 6th component of an S3 Outposts"
+                . " bucket ARN represents the resource type and must be"
+                . " 'outpost'.");
+        }
+
+        if (!self::isValidHostLabel($data['outpost_id'])) {
+            throw new InvalidArnException("The 7th component of an S3 Outposts"
+                . " bucket ARN is required, represents the outpost ID, and"
+                . " must be a valid host label.");
+        }
+
+        if ($data['bucket_label'] !== 'bucket') {
+            throw new InvalidArnException("The 8th component of an S3 Outposts"
+                . " bucket ARN must be 'bucket'");
+        }
+
+        if (empty($data['bucket_name'])) {
+            throw new InvalidArnException("The 9th component of an S3 Outposts"
+                . " bucket ARN represents the bucket name and must not be empty.");
+        }
+    }
+}