clean install

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/BaseConstraint.php

@@ -0,0 +1,148 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Constraints;
+
+use JsonSchema\Entity\JsonPointer;
+use JsonSchema\Exception\InvalidArgumentException;
+use JsonSchema\Exception\ValidationException;
+use JsonSchema\Validator;
+
+/**
+ * A more basic constraint definition - used for the public
+ * interface to avoid exposing library internals.
+ */
+class BaseConstraint
+{
+    /**
+     * @var array Errors
+     */
+    protected $errors = array();
+
+    /**
+     * @var int All error types which have occurred
+     */
+    protected $errorMask = Validator::ERROR_NONE;
+
+    /**
+     * @var Factory
+     */
+    protected $factory;
+
+    /**
+     * @param Factory $factory
+     */
+    public function __construct(?Factory $factory = null)
+    {
+        $this->factory = $factory ?: new Factory();
+    }
+
+    public function addError(?JsonPointer $path, $message, $constraint = '', ?array $more = null)
+    {
+        $error = array(
+            'property' => $this->convertJsonPointerIntoPropertyPath($path ?: new JsonPointer('')),
+            'pointer' => ltrim(strval($path ?: new JsonPointer('')), '#'),
+            'message' => $message,
+            'constraint' => $constraint,
+            'context' => $this->factory->getErrorContext(),
+        );
+
+        if ($this->factory->getConfig(Constraint::CHECK_MODE_EXCEPTIONS)) {
+            throw new ValidationException(sprintf('Error validating %s: %s', $error['pointer'], $error['message']));
+        }
+
+        if (is_array($more) && count($more) > 0) {
+            $error += $more;
+        }
+
+        $this->errors[] = $error;
+        $this->errorMask |= $error['context'];
+    }
+
+    public function addErrors(array $errors)
+    {
+        if ($errors) {
+            $this->errors = array_merge($this->errors, $errors);
+            $errorMask = &$this->errorMask;
+            array_walk($errors, function ($error) use (&$errorMask) {
+                if (isset($error['context'])) {
+                    $errorMask |= $error['context'];
+                }
+            });
+        }
+    }
+
+    public function getErrors($errorContext = Validator::ERROR_ALL)
+    {
+        if ($errorContext === Validator::ERROR_ALL) {
+            return $this->errors;
+        }
+
+        return array_filter($this->errors, function ($error) use ($errorContext) {
+            if ($errorContext & $error['context']) {
+                return true;
+            }
+        });
+    }
+
+    public function numErrors($errorContext = Validator::ERROR_ALL)
+    {
+        if ($errorContext === Validator::ERROR_ALL) {
+            return count($this->errors);
+        }
+
+        return count($this->getErrors($errorContext));
+    }
+
+    public function isValid()
+    {
+        return !$this->getErrors();
+    }
+
+    /**
+     * Clears any reported errors.  Should be used between
+     * multiple validation checks.
+     */
+    public function reset()
+    {
+        $this->errors = array();
+        $this->errorMask = Validator::ERROR_NONE;
+    }
+
+    /**
+     * Get the error mask
+     *
+     * @return int
+     */
+    public function getErrorMask()
+    {
+        return $this->errorMask;
+    }
+
+    /**
+     * Recursively cast an associative array to an object
+     *
+     * @param array $array
+     *
+     * @return object
+     */
+    public static function arrayToObjectRecursive($array)
+    {
+        $json = json_encode($array);
+        if (json_last_error() !== \JSON_ERROR_NONE) {
+            $message = 'Unable to encode schema array as JSON';
+            if (function_exists('json_last_error_msg')) {
+                $message .= ': ' . json_last_error_msg();
+            }
+            throw new InvalidArgumentException($message);
+        }
+
+        return (object) json_decode($json);
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/CollectionConstraint.php

@@ -0,0 +1,121 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Constraints;
+
+use JsonSchema\Entity\JsonPointer;
+
+/**
+ * The CollectionConstraint Constraints, validates an array against a given schema
+ *
+ * @author Robert Schönthal <seroscho@googlemail.com>
+ * @author Bruno Prieto Reis <bruno.p.reis@gmail.com>
+ */
+class CollectionConstraint extends Constraint
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function check(&$value, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        // Verify minItems
+        if (isset($schema->minItems) && count($value) < $schema->minItems) {
+            $this->addError($path, 'There must be a minimum of ' . $schema->minItems . ' items in the array', 'minItems', array('minItems' => $schema->minItems));
+        }
+
+        // Verify maxItems
+        if (isset($schema->maxItems) && count($value) > $schema->maxItems) {
+            $this->addError($path, 'There must be a maximum of ' . $schema->maxItems . ' items in the array', 'maxItems', array('maxItems' => $schema->maxItems));
+        }
+
+        // Verify uniqueItems
+        if (isset($schema->uniqueItems) && $schema->uniqueItems) {
+            $unique = $value;
+            if (is_array($value) && count($value)) {
+                $unique = array_map(function ($e) {
+                    return var_export($e, true);
+                }, $value);
+            }
+            if (count(array_unique($unique)) != count($value)) {
+                $this->addError($path, 'There are no duplicates allowed in the array', 'uniqueItems');
+            }
+        }
+
+        // Verify items
+        if (isset($schema->items)) {
+            $this->validateItems($value, $schema, $path, $i);
+        }
+    }
+
+    /**
+     * Validates the items
+     *
+     * @param array            $value
+     * @param \stdClass        $schema
+     * @param JsonPointer|null $path
+     * @param string           $i
+     */
+    protected function validateItems(&$value, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        if (is_object($schema->items)) {
+            // just one type definition for the whole array
+            foreach ($value as $k => &$v) {
+                $initErrors = $this->getErrors();
+
+                // First check if its defined in "items"
+                $this->checkUndefined($v, $schema->items, $path, $k);
+
+                // Recheck with "additionalItems" if the first test fails
+                if (count($initErrors) < count($this->getErrors()) && (isset($schema->additionalItems) && $schema->additionalItems !== false)) {
+                    $secondErrors = $this->getErrors();
+                    $this->checkUndefined($v, $schema->additionalItems, $path, $k);
+                }
+
+                // Reset errors if needed
+                if (isset($secondErrors) && count($secondErrors) < count($this->getErrors())) {
+                    $this->errors = $secondErrors;
+                } elseif (isset($secondErrors) && count($secondErrors) === count($this->getErrors())) {
+                    $this->errors = $initErrors;
+                }
+            }
+            unset($v); /* remove dangling reference to prevent any future bugs
+                        * caused by accidentally using $v elsewhere */
+        } else {
+            // Defined item type definitions
+            foreach ($value as $k => &$v) {
+                if (array_key_exists($k, $schema->items)) {
+                    $this->checkUndefined($v, $schema->items[$k], $path, $k);
+                } else {
+                    // Additional items
+                    if (property_exists($schema, 'additionalItems')) {
+                        if ($schema->additionalItems !== false) {
+                            $this->checkUndefined($v, $schema->additionalItems, $path, $k);
+                        } else {
+                            $this->addError(
+                                $path, 'The item ' . $i . '[' . $k . '] is not defined and the definition does not allow additional items', 'additionalItems', array('additionalItems' => $schema->additionalItems));
+                        }
+                    } else {
+                        // Should be valid against an empty schema
+                        $this->checkUndefined($v, new \stdClass(), $path, $k);
+                    }
+                }
+            }
+            unset($v); /* remove dangling reference to prevent any future bugs
+                        * caused by accidentally using $v elsewhere */
+
+            // Treat when we have more schema definitions than values, not for empty arrays
+            if (count($value) > 0) {
+                for ($k = count($value); $k < count($schema->items); $k++) {
+                    $undefinedInstance = $this->factory->createInstanceFor('undefined');
+                    $this->checkUndefined($undefinedInstance, $schema->items[$k], $path, $k);
+                }
+            }
+        }
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/Constraint.php

@@ -0,0 +1,218 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Constraints;
+
+use JsonSchema\Entity\JsonPointer;
+
+/**
+ * The Base Constraints, all Validators should extend this class
+ *
+ * @author Robert Schönthal <seroscho@googlemail.com>
+ * @author Bruno Prieto Reis <bruno.p.reis@gmail.com>
+ */
+abstract class Constraint extends BaseConstraint implements ConstraintInterface
+{
+    protected $inlineSchemaProperty = '$schema';
+
+    const CHECK_MODE_NONE =             0x00000000;
+    const CHECK_MODE_NORMAL =           0x00000001;
+    const CHECK_MODE_TYPE_CAST =        0x00000002;
+    const CHECK_MODE_COERCE_TYPES =     0x00000004;
+    const CHECK_MODE_APPLY_DEFAULTS =   0x00000008;
+    const CHECK_MODE_EXCEPTIONS =       0x00000010;
+    const CHECK_MODE_DISABLE_FORMAT =   0x00000020;
+    const CHECK_MODE_ONLY_REQUIRED_DEFAULTS   = 0x00000080;
+    const CHECK_MODE_VALIDATE_SCHEMA =  0x00000100;
+
+    /**
+     * Bubble down the path
+     *
+     * @param JsonPointer|null $path Current path
+     * @param mixed            $i    What to append to the path
+     *
+     * @return JsonPointer;
+     */
+    protected function incrementPath(?JsonPointer $path, $i)
+    {
+        $path = $path ?: new JsonPointer('');
+
+        if ($i === null || $i === '') {
+            return $path;
+        }
+
+        $path = $path->withPropertyPaths(
+            array_merge(
+                $path->getPropertyPaths(),
+                array($i)
+            )
+        );
+
+        return $path;
+    }
+
+    /**
+     * Validates an array
+     *
+     * @param mixed            $value
+     * @param mixed            $schema
+     * @param JsonPointer|null $path
+     * @param mixed            $i
+     */
+    protected function checkArray(&$value, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        $validator = $this->factory->createInstanceFor('collection');
+        $validator->check($value, $schema, $path, $i);
+
+        $this->addErrors($validator->getErrors());
+    }
+
+    /**
+     * Validates an object
+     *
+     * @param mixed            $value
+     * @param mixed            $schema
+     * @param JsonPointer|null $path
+     * @param mixed            $properties
+     * @param mixed            $additionalProperties
+     * @param mixed            $patternProperties
+     */
+    protected function checkObject(&$value, $schema = null, ?JsonPointer $path = null, $properties = null,
+        $additionalProperties = null, $patternProperties = null, $appliedDefaults = array())
+    {
+        $validator = $this->factory->createInstanceFor('object');
+        $validator->check($value, $schema, $path, $properties, $additionalProperties, $patternProperties, $appliedDefaults);
+
+        $this->addErrors($validator->getErrors());
+    }
+
+    /**
+     * Validates the type of a property
+     *
+     * @param mixed            $value
+     * @param mixed            $schema
+     * @param JsonPointer|null $path
+     * @param mixed            $i
+     */
+    protected function checkType(&$value, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        $validator = $this->factory->createInstanceFor('type');
+        $validator->check($value, $schema, $path, $i);
+
+        $this->addErrors($validator->getErrors());
+    }
+
+    /**
+     * Checks a undefined element
+     *
+     * @param mixed            $value
+     * @param mixed            $schema
+     * @param JsonPointer|null $path
+     * @param mixed            $i
+     */
+    protected function checkUndefined(&$value, $schema = null, ?JsonPointer $path = null, $i = null, $fromDefault = false)
+    {
+        $validator = $this->factory->createInstanceFor('undefined');
+
+        $validator->check($value, $this->factory->getSchemaStorage()->resolveRefSchema($schema), $path, $i, $fromDefault);
+
+        $this->addErrors($validator->getErrors());
+    }
+
+    /**
+     * Checks a string element
+     *
+     * @param mixed            $value
+     * @param mixed            $schema
+     * @param JsonPointer|null $path
+     * @param mixed            $i
+     */
+    protected function checkString($value, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        $validator = $this->factory->createInstanceFor('string');
+        $validator->check($value, $schema, $path, $i);
+
+        $this->addErrors($validator->getErrors());
+    }
+
+    /**
+     * Checks a number element
+     *
+     * @param mixed       $value
+     * @param mixed       $schema
+     * @param JsonPointer $path
+     * @param mixed       $i
+     */
+    protected function checkNumber($value, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        $validator = $this->factory->createInstanceFor('number');
+        $validator->check($value, $schema, $path, $i);
+
+        $this->addErrors($validator->getErrors());
+    }
+
+    /**
+     * Checks a enum element
+     *
+     * @param mixed            $value
+     * @param mixed            $schema
+     * @param JsonPointer|null $path
+     * @param mixed            $i
+     */
+    protected function checkEnum($value, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        $validator = $this->factory->createInstanceFor('enum');
+        $validator->check($value, $schema, $path, $i);
+
+        $this->addErrors($validator->getErrors());
+    }
+
+    /**
+     * Checks format of an element
+     *
+     * @param mixed            $value
+     * @param mixed            $schema
+     * @param JsonPointer|null $path
+     * @param mixed            $i
+     */
+    protected function checkFormat($value, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        $validator = $this->factory->createInstanceFor('format');
+        $validator->check($value, $schema, $path, $i);
+
+        $this->addErrors($validator->getErrors());
+    }
+
+    /**
+     * Get the type check based on the set check mode.
+     *
+     * @return TypeCheck\TypeCheckInterface
+     */
+    protected function getTypeCheck()
+    {
+        return $this->factory->getTypeCheck();
+    }
+
+    /**
+     * @param JsonPointer $pointer
+     *
+     * @return string property path
+     */
+    protected function convertJsonPointerIntoPropertyPath(JsonPointer $pointer)
+    {
+        $result = array_map(
+            function ($path) {
+                return sprintf(is_numeric($path) ? '[%d]' : '.%s', $path);
+            },
+            $pointer->getPropertyPaths()
+        );
+
+        return trim(implode('', $result), '.');
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/ConstraintInterface.php

@@ -0,0 +1,65 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Constraints;
+
+use JsonSchema\Entity\JsonPointer;
+
+/**
+ * The Constraints Interface
+ *
+ * @author Robert Schönthal <seroscho@googlemail.com>
+ */
+interface ConstraintInterface
+{
+    /**
+     * returns all collected errors
+     *
+     * @return array
+     */
+    public function getErrors();
+
+    /**
+     * adds errors to this validator
+     *
+     * @param array $errors
+     */
+    public function addErrors(array $errors);
+
+    /**
+     * adds an error
+     *
+     * @param JsonPointer|null $path
+     * @param string           $message
+     * @param string           $constraint the constraint/rule that is broken, e.g.: 'minLength'
+     * @param array            $more       more array elements to add to the error
+     */
+    public function addError(?JsonPointer $path, $message, $constraint='', ?array $more = null);
+
+    /**
+     * checks if the validator has not raised errors
+     *
+     * @return bool
+     */
+    public function isValid();
+
+    /**
+     * invokes the validation of an element
+     *
+     * @abstract
+     *
+     * @param mixed            $value
+     * @param mixed            $schema
+     * @param JsonPointer|null $path
+     * @param mixed            $i
+     *
+     * @throws \JsonSchema\Exception\ExceptionInterface
+     */
+    public function check(&$value, $schema = null, ?JsonPointer $path = null, $i = null);
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/EnumConstraint.php

@@ -0,0 +1,54 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Constraints;
+
+use JsonSchema\Entity\JsonPointer;
+
+/**
+ * The EnumConstraint Constraints, validates an element against a given set of possibilities
+ *
+ * @author Robert Schönthal <seroscho@googlemail.com>
+ * @author Bruno Prieto Reis <bruno.p.reis@gmail.com>
+ */
+class EnumConstraint extends Constraint
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function check(&$element, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        // Only validate enum if the attribute exists
+        if ($element instanceof UndefinedConstraint && (!isset($schema->required) || !$schema->required)) {
+            return;
+        }
+        $type = gettype($element);
+
+        foreach ($schema->enum as $enum) {
+            $enumType = gettype($enum);
+            if ($this->factory->getConfig(self::CHECK_MODE_TYPE_CAST) && $type == 'array' && $enumType == 'object') {
+                if ((object) $element == $enum) {
+                    return;
+                }
+            }
+
+            if ($type === gettype($enum)) {
+                if ($type == 'object') {
+                    if ($element == $enum) {
+                        return;
+                    }
+                } elseif ($element === $enum) {
+                    return;
+                }
+            }
+        }
+
+        $this->addError($path, 'Does not have a value in the enumeration ' . json_encode($schema->enum), 'enum', array('enum' => $schema->enum));
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/Factory.php

@@ -0,0 +1,220 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Constraints;
+
+use JsonSchema\Exception\InvalidArgumentException;
+use JsonSchema\SchemaStorage;
+use JsonSchema\SchemaStorageInterface;
+use JsonSchema\Uri\UriRetriever;
+use JsonSchema\UriRetrieverInterface;
+use JsonSchema\Validator;
+
+/**
+ * Factory for centralize constraint initialization.
+ */
+class Factory
+{
+    /**
+     * @var SchemaStorage
+     */
+    protected $schemaStorage;
+
+    /**
+     * @var UriRetriever
+     */
+    protected $uriRetriever;
+
+    /**
+     * @var int
+     */
+    private $checkMode = Constraint::CHECK_MODE_NORMAL;
+
+    /**
+     * @var TypeCheck\TypeCheckInterface[]
+     */
+    private $typeCheck = array();
+
+    /**
+     * @var int Validation context
+     */
+    protected $errorContext = Validator::ERROR_DOCUMENT_VALIDATION;
+
+    /**
+     * @var array
+     */
+    protected $constraintMap = array(
+        'array' => 'JsonSchema\Constraints\CollectionConstraint',
+        'collection' => 'JsonSchema\Constraints\CollectionConstraint',
+        'object' => 'JsonSchema\Constraints\ObjectConstraint',
+        'type' => 'JsonSchema\Constraints\TypeConstraint',
+        'undefined' => 'JsonSchema\Constraints\UndefinedConstraint',
+        'string' => 'JsonSchema\Constraints\StringConstraint',
+        'number' => 'JsonSchema\Constraints\NumberConstraint',
+        'enum' => 'JsonSchema\Constraints\EnumConstraint',
+        'format' => 'JsonSchema\Constraints\FormatConstraint',
+        'schema' => 'JsonSchema\Constraints\SchemaConstraint',
+        'validator' => 'JsonSchema\Validator'
+    );
+
+    /**
+     * @var array<ConstraintInterface>
+     */
+    private $instanceCache = array();
+
+    /**
+     * @param SchemaStorage         $schemaStorage
+     * @param UriRetrieverInterface $uriRetriever
+     * @param int                   $checkMode
+     */
+    public function __construct(
+        ?SchemaStorageInterface $schemaStorage = null,
+        ?UriRetrieverInterface $uriRetriever = null,
+        $checkMode = Constraint::CHECK_MODE_NORMAL
+    ) {
+        // set provided config options
+        $this->setConfig($checkMode);
+
+        $this->uriRetriever = $uriRetriever ?: new UriRetriever();
+        $this->schemaStorage = $schemaStorage ?: new SchemaStorage($this->uriRetriever);
+    }
+
+    /**
+     * Set config values
+     *
+     * @param int $checkMode Set checkMode options - does not preserve existing flags
+     */
+    public function setConfig($checkMode = Constraint::CHECK_MODE_NORMAL)
+    {
+        $this->checkMode = $checkMode;
+    }
+
+    /**
+     * Enable checkMode flags
+     *
+     * @param int $options
+     */
+    public function addConfig($options)
+    {
+        $this->checkMode |= $options;
+    }
+
+    /**
+     * Disable checkMode flags
+     *
+     * @param int $options
+     */
+    public function removeConfig($options)
+    {
+        $this->checkMode &= ~$options;
+    }
+
+    /**
+     * Get checkMode option
+     *
+     * @param int $options Options to get, if null then return entire bitmask
+     *
+     * @return int
+     */
+    public function getConfig($options = null)
+    {
+        if ($options === null) {
+            return $this->checkMode;
+        }
+
+        return $this->checkMode & $options;
+    }
+
+    /**
+     * @return UriRetrieverInterface
+     */
+    public function getUriRetriever()
+    {
+        return $this->uriRetriever;
+    }
+
+    public function getSchemaStorage()
+    {
+        return $this->schemaStorage;
+    }
+
+    public function getTypeCheck()
+    {
+        if (!isset($this->typeCheck[$this->checkMode])) {
+            $this->typeCheck[$this->checkMode] = ($this->checkMode & Constraint::CHECK_MODE_TYPE_CAST)
+                ? new TypeCheck\LooseTypeCheck()
+                : new TypeCheck\StrictTypeCheck();
+        }
+
+        return $this->typeCheck[$this->checkMode];
+    }
+
+    /**
+     * @param string $name
+     * @param string $class
+     *
+     * @return Factory
+     */
+    public function setConstraintClass($name, $class)
+    {
+        // Ensure class exists
+        if (!class_exists($class)) {
+            throw new InvalidArgumentException('Unknown constraint ' . $name);
+        }
+        // Ensure class is appropriate
+        if (!in_array('JsonSchema\Constraints\ConstraintInterface', class_implements($class))) {
+            throw new InvalidArgumentException('Invalid class ' . $name);
+        }
+        $this->constraintMap[$name] = $class;
+
+        return $this;
+    }
+
+    /**
+     * Create a constraint instance for the given constraint name.
+     *
+     * @param string $constraintName
+     *
+     * @throws InvalidArgumentException if is not possible create the constraint instance
+     *
+     * @return ConstraintInterface|ObjectConstraint
+     */
+    public function createInstanceFor($constraintName)
+    {
+        if (!isset($this->constraintMap[$constraintName])) {
+            throw new InvalidArgumentException('Unknown constraint ' . $constraintName);
+        }
+
+        if (!isset($this->instanceCache[$constraintName])) {
+            $this->instanceCache[$constraintName] = new $this->constraintMap[$constraintName]($this);
+        }
+
+        return clone $this->instanceCache[$constraintName];
+    }
+
+    /**
+     * Get the error context
+     *
+     * @return string
+     */
+    public function getErrorContext()
+    {
+        return $this->errorContext;
+    }
+
+    /**
+     * Set the error context
+     *
+     * @param string $validationContext
+     */
+    public function setErrorContext($errorContext)
+    {
+        $this->errorContext = $errorContext;
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/FormatConstraint.php

@@ -0,0 +1,214 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Constraints;
+
+use JsonSchema\Entity\JsonPointer;
+use JsonSchema\Rfc3339;
+
+/**
+ * Validates against the "format" property
+ *
+ * @author Justin Rainbow <justin.rainbow@gmail.com>
+ *
+ * @see   http://tools.ietf.org/html/draft-zyp-json-schema-03#section-5.23
+ */
+class FormatConstraint extends Constraint
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function check(&$element, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        if (!isset($schema->format) || $this->factory->getConfig(self::CHECK_MODE_DISABLE_FORMAT)) {
+            return;
+        }
+
+        switch ($schema->format) {
+            case 'date':
+                if (!$date = $this->validateDateTime($element, 'Y-m-d')) {
+                    $this->addError($path, sprintf('Invalid date %s, expected format YYYY-MM-DD', json_encode($element)), 'format', array('format' => $schema->format));
+                }
+                break;
+
+            case 'time':
+                if (!$this->validateDateTime($element, 'H:i:s')) {
+                    $this->addError($path, sprintf('Invalid time %s, expected format hh:mm:ss', json_encode($element)), 'format', array('format' => $schema->format));
+                }
+                break;
+
+            case 'date-time':
+                if (null === Rfc3339::createFromString($element)) {
+                    $this->addError($path, sprintf('Invalid date-time %s, expected format YYYY-MM-DDThh:mm:ssZ or YYYY-MM-DDThh:mm:ss+hh:mm', json_encode($element)), 'format', array('format' => $schema->format));
+                }
+                break;
+
+            case 'utc-millisec':
+                if (!$this->validateDateTime($element, 'U')) {
+                    $this->addError($path, sprintf('Invalid time %s, expected integer of milliseconds since Epoch', json_encode($element)), 'format', array('format' => $schema->format));
+                }
+                break;
+
+            case 'regex':
+                if (!$this->validateRegex($element)) {
+                    $this->addError($path, 'Invalid regex format ' . $element, 'format', array('format' => $schema->format));
+                }
+                break;
+
+            case 'color':
+                if (!$this->validateColor($element)) {
+                    $this->addError($path, 'Invalid color', 'format', array('format' => $schema->format));
+                }
+                break;
+
+            case 'style':
+                if (!$this->validateStyle($element)) {
+                    $this->addError($path, 'Invalid style', 'format', array('format' => $schema->format));
+                }
+                break;
+
+            case 'phone':
+                if (!$this->validatePhone($element)) {
+                    $this->addError($path, 'Invalid phone number', 'format', array('format' => $schema->format));
+                }
+                break;
+
+            case 'uri':
+                if (null === filter_var($element, FILTER_VALIDATE_URL, FILTER_NULL_ON_FAILURE)) {
+                    $this->addError($path, 'Invalid URL format', 'format', array('format' => $schema->format));
+                }
+                break;
+
+            case 'uriref':
+            case 'uri-reference':
+                if (null === filter_var($element, FILTER_VALIDATE_URL, FILTER_NULL_ON_FAILURE)) {
+                    // FILTER_VALIDATE_URL does not conform to RFC-3986, and cannot handle relative URLs, but
+                    // the json-schema spec uses RFC-3986, so need a bit of hackery to properly validate them.
+                    // See https://tools.ietf.org/html/rfc3986#section-4.2 for additional information.
+                    if (substr($element, 0, 2) === '//') { // network-path reference
+                        $validURL = filter_var('scheme:' . $element, FILTER_VALIDATE_URL, FILTER_NULL_ON_FAILURE);
+                    } elseif (substr($element, 0, 1) === '/') { // absolute-path reference
+                        $validURL = filter_var('scheme://host' . $element, FILTER_VALIDATE_URL, FILTER_NULL_ON_FAILURE);
+                    } elseif (strlen($element)) { // relative-path reference
+                        $pathParts = explode('/', $element, 2);
+                        if (strpos($pathParts[0], ':') !== false) {
+                            $validURL = null;
+                        } else {
+                            $validURL = filter_var('scheme://host/' . $element, FILTER_VALIDATE_URL, FILTER_NULL_ON_FAILURE);
+                        }
+                    } else {
+                        $validURL = null;
+                    }
+                    if ($validURL === null) {
+                        $this->addError($path, 'Invalid URL format', 'format', array('format' => $schema->format));
+                    }
+                }
+                break;
+
+            case 'email':
+                $filterFlags = FILTER_NULL_ON_FAILURE;
+                if (defined('FILTER_FLAG_EMAIL_UNICODE')) {
+                    // Only available from PHP >= 7.1.0, so ignore it for coverage checks
+                    $filterFlags |= constant('FILTER_FLAG_EMAIL_UNICODE'); // @codeCoverageIgnore
+                }
+                if (null === filter_var($element, FILTER_VALIDATE_EMAIL, $filterFlags)) {
+                    $this->addError($path, 'Invalid email', 'format', array('format' => $schema->format));
+                }
+                break;
+
+            case 'ip-address':
+            case 'ipv4':
+                if (null === filter_var($element, FILTER_VALIDATE_IP, FILTER_NULL_ON_FAILURE | FILTER_FLAG_IPV4)) {
+                    $this->addError($path, 'Invalid IP address', 'format', array('format' => $schema->format));
+                }
+                break;
+
+            case 'ipv6':
+                if (null === filter_var($element, FILTER_VALIDATE_IP, FILTER_NULL_ON_FAILURE | FILTER_FLAG_IPV6)) {
+                    $this->addError($path, 'Invalid IP address', 'format', array('format' => $schema->format));
+                }
+                break;
+
+            case 'host-name':
+            case 'hostname':
+                if (!$this->validateHostname($element)) {
+                    $this->addError($path, 'Invalid hostname', 'format', array('format' => $schema->format));
+                }
+                break;
+
+            default:
+                // Empty as it should be:
+                // The value of this keyword is called a format attribute. It MUST be a string.
+                // A format attribute can generally only validate a given set of instance types.
+                // If the type of the instance to validate is not in this set, validation for
+                // this format attribute and instance SHOULD succeed.
+                // http://json-schema.org/latest/json-schema-validation.html#anchor105
+                break;
+        }
+    }
+
+    protected function validateDateTime($datetime, $format)
+    {
+        $dt = \DateTime::createFromFormat($format, $datetime);
+
+        if (!$dt) {
+            return false;
+        }
+
+        if ($datetime === $dt->format($format)) {
+            return true;
+        }
+
+        // handles the case where a non-6 digit microsecond datetime is passed
+        // which will fail the above string comparison because the passed
+        // $datetime may be '2000-05-01T12:12:12.123Z' but format() will return
+        // '2000-05-01T12:12:12.123000Z'
+        if ((strpos('u', $format) !== -1) && (preg_match('/\.\d+Z$/', $datetime))) {
+            return true;
+        }
+
+        return false;
+    }
+
+    protected function validateRegex($regex)
+    {
+        return false !== @preg_match('/' . $regex . '/u', '');
+    }
+
+    protected function validateColor($color)
+    {
+        if (in_array(strtolower($color), array('aqua', 'black', 'blue', 'fuchsia',
+            'gray', 'green', 'lime', 'maroon', 'navy', 'olive', 'orange', 'purple',
+            'red', 'silver', 'teal', 'white', 'yellow'))) {
+            return true;
+        }
+
+        return preg_match('/^#([a-f0-9]{3}|[a-f0-9]{6})$/i', $color);
+    }
+
+    protected function validateStyle($style)
+    {
+        $properties     = explode(';', rtrim($style, ';'));
+        $invalidEntries = preg_grep('/^\s*[-a-z]+\s*:\s*.+$/i', $properties, PREG_GREP_INVERT);
+
+        return empty($invalidEntries);
+    }
+
+    protected function validatePhone($phone)
+    {
+        return preg_match('/^\+?(\(\d{3}\)|\d{3}) \d{3} \d{4}$/', $phone);
+    }
+
+    protected function validateHostname($host)
+    {
+        $hostnameRegex = '/^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$/i';
+
+        return preg_match($hostnameRegex, $host);
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/NumberConstraint.php

@@ -0,0 +1,81 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Constraints;
+
+use JsonSchema\Entity\JsonPointer;
+
+/**
+ * The NumberConstraint Constraints, validates an number against a given schema
+ *
+ * @author Robert Schönthal <seroscho@googlemail.com>
+ * @author Bruno Prieto Reis <bruno.p.reis@gmail.com>
+ */
+class NumberConstraint extends Constraint
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function check(&$element, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        // Verify minimum
+        if (isset($schema->exclusiveMinimum)) {
+            if (isset($schema->minimum)) {
+                if ($schema->exclusiveMinimum && $element <= $schema->minimum) {
+                    $this->addError($path, 'Must have a minimum value of ' . $schema->minimum, 'exclusiveMinimum', array('minimum' => $schema->minimum));
+                } elseif ($element < $schema->minimum) {
+                    $this->addError($path, 'Must have a minimum value of ' . $schema->minimum, 'minimum', array('minimum' => $schema->minimum));
+                }
+            } else {
+                $this->addError($path, 'Use of exclusiveMinimum requires presence of minimum', 'missingMinimum');
+            }
+        } elseif (isset($schema->minimum) && $element < $schema->minimum) {
+            $this->addError($path, 'Must have a minimum value of ' . $schema->minimum, 'minimum', array('minimum' => $schema->minimum));
+        }
+
+        // Verify maximum
+        if (isset($schema->exclusiveMaximum)) {
+            if (isset($schema->maximum)) {
+                if ($schema->exclusiveMaximum && $element >= $schema->maximum) {
+                    $this->addError($path, 'Must have a maximum value of ' . $schema->maximum, 'exclusiveMaximum', array('maximum' => $schema->maximum));
+                } elseif ($element > $schema->maximum) {
+                    $this->addError($path, 'Must have a maximum value of ' . $schema->maximum, 'maximum', array('maximum' => $schema->maximum));
+                }
+            } else {
+                $this->addError($path, 'Use of exclusiveMaximum requires presence of maximum', 'missingMaximum');
+            }
+        } elseif (isset($schema->maximum) && $element > $schema->maximum) {
+            $this->addError($path, 'Must have a maximum value of ' . $schema->maximum, 'maximum', array('maximum' => $schema->maximum));
+        }
+
+        // Verify divisibleBy - Draft v3
+        if (isset($schema->divisibleBy) && $this->fmod($element, $schema->divisibleBy) != 0) {
+            $this->addError($path, 'Is not divisible by ' . $schema->divisibleBy, 'divisibleBy', array('divisibleBy' => $schema->divisibleBy));
+        }
+
+        // Verify multipleOf - Draft v4
+        if (isset($schema->multipleOf) && $this->fmod($element, $schema->multipleOf) != 0) {
+            $this->addError($path, 'Must be a multiple of ' . $schema->multipleOf, 'multipleOf', array('multipleOf' => $schema->multipleOf));
+        }
+
+        $this->checkFormat($element, $schema, $path, $i);
+    }
+
+    private function fmod($number1, $number2)
+    {
+        $modulus = ($number1 - round($number1 / $number2) * $number2);
+        $precision = 0.0000000001;
+
+        if (-$precision < $modulus && $modulus < $precision) {
+            return 0.0;
+        }
+
+        return $modulus;
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/ObjectConstraint.php

@@ -0,0 +1,192 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Constraints;
+
+use JsonSchema\Entity\JsonPointer;
+
+/**
+ * The ObjectConstraint Constraints, validates an object against a given schema
+ *
+ * @author Robert Schönthal <seroscho@googlemail.com>
+ * @author Bruno Prieto Reis <bruno.p.reis@gmail.com>
+ */
+class ObjectConstraint extends Constraint
+{
+    /**
+     * @var array List of properties to which a default value has been applied
+     */
+    protected $appliedDefaults = array();
+
+    /**
+     * {@inheritdoc}
+     */
+    public function check(&$element, $schema = null, ?JsonPointer $path = null, $properties = null,
+        $additionalProp = null, $patternProperties = null, $appliedDefaults = array())
+    {
+        if ($element instanceof UndefinedConstraint) {
+            return;
+        }
+
+        $this->appliedDefaults = $appliedDefaults;
+
+        $matches = array();
+        if ($patternProperties) {
+            // validate the element pattern properties
+            $matches = $this->validatePatternProperties($element, $path, $patternProperties);
+        }
+
+        if ($properties) {
+            // validate the element properties
+            $this->validateProperties($element, $properties, $path);
+        }
+
+        // validate additional element properties & constraints
+        $this->validateElement($element, $matches, $schema, $path, $properties, $additionalProp);
+    }
+
+    public function validatePatternProperties($element, ?JsonPointer $path, $patternProperties)
+    {
+        $try = array('/', '#', '+', '~', '%');
+        $matches = array();
+        foreach ($patternProperties as $pregex => $schema) {
+            $delimiter = '/';
+            // Choose delimiter. Necessary for patterns like ^/ , otherwise you get error
+            foreach ($try as $delimiter) {
+                if (strpos($pregex, $delimiter) === false) { // safe to use
+                    break;
+                }
+            }
+
+            // Validate the pattern before using it to test for matches
+            if (@preg_match($delimiter . $pregex . $delimiter . 'u', '') === false) {
+                $this->addError($path, 'The pattern "' . $pregex . '" is invalid', 'pregex', array('pregex' => $pregex));
+                continue;
+            }
+            foreach ($element as $i => $value) {
+                if (preg_match($delimiter . $pregex . $delimiter . 'u', $i)) {
+                    $matches[] = $i;
+                    $this->checkUndefined($value, $schema ?: new \stdClass(), $path, $i, in_array($i, $this->appliedDefaults));
+                }
+            }
+        }
+
+        return $matches;
+    }
+
+    /**
+     * Validates the element properties
+     *
+     * @param \StdClass        $element        Element to validate
+     * @param array            $matches        Matches from patternProperties (if any)
+     * @param \StdClass        $schema         ObjectConstraint definition
+     * @param JsonPointer|null $path           Current test path
+     * @param \StdClass        $properties     Properties
+     * @param mixed            $additionalProp Additional properties
+     */
+    public function validateElement($element, $matches, $schema = null, ?JsonPointer $path = null,
+        $properties = null, $additionalProp = null)
+    {
+        $this->validateMinMaxConstraint($element, $schema, $path);
+
+        foreach ($element as $i => $value) {
+            $definition = $this->getProperty($properties, $i);
+
+            // no additional properties allowed
+            if (!in_array($i, $matches) && $additionalProp === false && $this->inlineSchemaProperty !== $i && !$definition) {
+                $this->addError($path, 'The property ' . $i . ' is not defined and the definition does not allow additional properties', 'additionalProp');
+            }
+
+            // additional properties defined
+            if (!in_array($i, $matches) && $additionalProp && !$definition) {
+                if ($additionalProp === true) {
+                    $this->checkUndefined($value, null, $path, $i, in_array($i, $this->appliedDefaults));
+                } else {
+                    $this->checkUndefined($value, $additionalProp, $path, $i, in_array($i, $this->appliedDefaults));
+                }
+            }
+
+            // property requires presence of another
+            $require = $this->getProperty($definition, 'requires');
+            if ($require && !$this->getProperty($element, $require)) {
+                $this->addError($path, 'The presence of the property ' . $i . ' requires that ' . $require . ' also be present', 'requires');
+            }
+
+            $property = $this->getProperty($element, $i, $this->factory->createInstanceFor('undefined'));
+            if (is_object($property)) {
+                $this->validateMinMaxConstraint(!($property instanceof UndefinedConstraint) ? $property : $element, $definition, $path);
+            }
+        }
+    }
+
+    /**
+     * Validates the definition properties
+     *
+     * @param \stdClass        $element    Element to validate
+     * @param \stdClass        $properties Property definitions
+     * @param JsonPointer|null $path       Path?
+     */
+    public function validateProperties(&$element, $properties = null, ?JsonPointer $path = null)
+    {
+        $undefinedConstraint = $this->factory->createInstanceFor('undefined');
+
+        foreach ($properties as $i => $value) {
+            $property = &$this->getProperty($element, $i, $undefinedConstraint);
+            $definition = $this->getProperty($properties, $i);
+
+            if (is_object($definition)) {
+                // Undefined constraint will check for is_object() and quit if is not - so why pass it?
+                $this->checkUndefined($property, $definition, $path, $i, in_array($i, $this->appliedDefaults));
+            }
+        }
+    }
+
+    /**
+     * retrieves a property from an object or array
+     *
+     * @param mixed  $element  Element to validate
+     * @param string $property Property to retrieve
+     * @param mixed  $fallback Default value if property is not found
+     *
+     * @return mixed
+     */
+    protected function &getProperty(&$element, $property, $fallback = null)
+    {
+        if (is_array($element) && (isset($element[$property]) || array_key_exists($property, $element)) /*$this->checkMode == self::CHECK_MODE_TYPE_CAST*/) {
+            return $element[$property];
+        } elseif (is_object($element) && property_exists($element, $property)) {
+            return $element->$property;
+        }
+
+        return $fallback;
+    }
+
+    /**
+     * validating minimum and maximum property constraints (if present) against an element
+     *
+     * @param \stdClass        $element          Element to validate
+     * @param \stdClass        $objectDefinition ObjectConstraint definition
+     * @param JsonPointer|null $path             Path to test?
+     */
+    protected function validateMinMaxConstraint($element, $objectDefinition, ?JsonPointer $path = null)
+    {
+        // Verify minimum number of properties
+        if (isset($objectDefinition->minProperties) && !is_object($objectDefinition->minProperties)) {
+            if ($this->getTypeCheck()->propertyCount($element) < $objectDefinition->minProperties) {
+                $this->addError($path, 'Must contain a minimum of ' . $objectDefinition->minProperties . ' properties', 'minProperties', array('minProperties' => $objectDefinition->minProperties));
+            }
+        }
+        // Verify maximum number of properties
+        if (isset($objectDefinition->maxProperties) && !is_object($objectDefinition->maxProperties)) {
+            if ($this->getTypeCheck()->propertyCount($element) > $objectDefinition->maxProperties) {
+                $this->addError($path, 'Must contain no more than ' . $objectDefinition->maxProperties . ' properties', 'maxProperties', array('maxProperties' => $objectDefinition->maxProperties));
+            }
+        }
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/SchemaConstraint.php

@@ -0,0 +1,94 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Constraints;
+
+use JsonSchema\Entity\JsonPointer;
+use JsonSchema\Exception\InvalidArgumentException;
+use JsonSchema\Exception\InvalidSchemaException;
+use JsonSchema\Exception\RuntimeException;
+use JsonSchema\Validator;
+
+/**
+ * The SchemaConstraint Constraints, validates an element against a given schema
+ *
+ * @author Robert Schönthal <seroscho@googlemail.com>
+ * @author Bruno Prieto Reis <bruno.p.reis@gmail.com>
+ */
+class SchemaConstraint extends Constraint
+{
+    const DEFAULT_SCHEMA_SPEC = 'http://json-schema.org/draft-04/schema#';
+
+    /**
+     * {@inheritdoc}
+     */
+    public function check(&$element, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        if ($schema !== null) {
+            // passed schema
+            $validationSchema = $schema;
+        } elseif ($this->getTypeCheck()->propertyExists($element, $this->inlineSchemaProperty)) {
+            // inline schema
+            $validationSchema = $this->getTypeCheck()->propertyGet($element, $this->inlineSchemaProperty);
+        } else {
+            throw new InvalidArgumentException('no schema found to verify against');
+        }
+
+        // cast array schemas to object
+        if (is_array($validationSchema)) {
+            $validationSchema = BaseConstraint::arrayToObjectRecursive($validationSchema);
+        }
+
+        // validate schema against whatever is defined in $validationSchema->$schema. If no
+        // schema is defined, assume self::DEFAULT_SCHEMA_SPEC (currently draft-04).
+        if ($this->factory->getConfig(self::CHECK_MODE_VALIDATE_SCHEMA)) {
+            if (!$this->getTypeCheck()->isObject($validationSchema)) {
+                throw new RuntimeException('Cannot validate the schema of a non-object');
+            }
+            if ($this->getTypeCheck()->propertyExists($validationSchema, '$schema')) {
+                $schemaSpec = $this->getTypeCheck()->propertyGet($validationSchema, '$schema');
+            } else {
+                $schemaSpec = self::DEFAULT_SCHEMA_SPEC;
+            }
+
+            // get the spec schema
+            $schemaStorage = $this->factory->getSchemaStorage();
+            if (!$this->getTypeCheck()->isObject($schemaSpec)) {
+                $schemaSpec = $schemaStorage->getSchema($schemaSpec);
+            }
+
+            // save error count, config & subtract CHECK_MODE_VALIDATE_SCHEMA
+            $initialErrorCount = $this->numErrors();
+            $initialConfig = $this->factory->getConfig();
+            $initialContext = $this->factory->getErrorContext();
+            $this->factory->removeConfig(self::CHECK_MODE_VALIDATE_SCHEMA | self::CHECK_MODE_APPLY_DEFAULTS);
+            $this->factory->addConfig(self::CHECK_MODE_TYPE_CAST);
+            $this->factory->setErrorContext(Validator::ERROR_SCHEMA_VALIDATION);
+
+            // validate schema
+            try {
+                $this->check($validationSchema, $schemaSpec);
+            } catch (\Exception $e) {
+                if ($this->factory->getConfig(self::CHECK_MODE_EXCEPTIONS)) {
+                    throw new InvalidSchemaException('Schema did not pass validation', 0, $e);
+                }
+            }
+            if ($this->numErrors() > $initialErrorCount) {
+                $this->addError($path, 'Schema is not valid', 'schema');
+            }
+
+            // restore the initial config
+            $this->factory->setConfig($initialConfig);
+            $this->factory->setErrorContext($initialContext);
+        }
+
+        // validate element against $validationSchema
+        $this->checkUndefined($element, $validationSchema, $path, $i);
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/StringConstraint.php

@@ -0,0 +1,60 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Constraints;
+
+use JsonSchema\Entity\JsonPointer;
+
+/**
+ * The StringConstraint Constraints, validates an string against a given schema
+ *
+ * @author Robert Schönthal <seroscho@googlemail.com>
+ * @author Bruno Prieto Reis <bruno.p.reis@gmail.com>
+ */
+class StringConstraint extends Constraint
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function check(&$element, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        // Verify maxLength
+        if (isset($schema->maxLength) && $this->strlen($element) > $schema->maxLength) {
+            $this->addError($path, 'Must be at most ' . $schema->maxLength . ' characters long', 'maxLength', array(
+                'maxLength' => $schema->maxLength,
+            ));
+        }
+
+        //verify minLength
+        if (isset($schema->minLength) && $this->strlen($element) < $schema->minLength) {
+            $this->addError($path, 'Must be at least ' . $schema->minLength . ' characters long', 'minLength', array(
+                'minLength' => $schema->minLength,
+            ));
+        }
+
+        // Verify a regex pattern
+        if (isset($schema->pattern) && !preg_match('#' . str_replace('#', '\\#', $schema->pattern) . '#u', $element)) {
+            $this->addError($path, 'Does not match the regex pattern ' . $schema->pattern, 'pattern', array(
+                'pattern' => $schema->pattern,
+            ));
+        }
+
+        $this->checkFormat($element, $schema, $path, $i);
+    }
+
+    private function strlen($string)
+    {
+        if (extension_loaded('mbstring')) {
+            return mb_strlen($string, mb_detect_encoding($string));
+        }
+
+        // mbstring is present on all test platforms, so strlen() can be ignored for coverage
+        return strlen($string); // @codeCoverageIgnore
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/TypeCheck/LooseTypeCheck.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace JsonSchema\Constraints\TypeCheck;
+
+class LooseTypeCheck implements TypeCheckInterface
+{
+    public static function isObject($value)
+    {
+        return
+            is_object($value) ||
+            (is_array($value) && (count($value) == 0 || self::isAssociativeArray($value)));
+    }
+
+    public static function isArray($value)
+    {
+        return
+            is_array($value) &&
+            (count($value) == 0 || !self::isAssociativeArray($value));
+    }
+
+    public static function propertyGet($value, $property)
+    {
+        if (is_object($value)) {
+            return $value->{$property};
+        }
+
+        return $value[$property];
+    }
+
+    public static function propertySet(&$value, $property, $data)
+    {
+        if (is_object($value)) {
+            $value->{$property} = $data;
+        } else {
+            $value[$property] = $data;
+        }
+    }
+
+    public static function propertyExists($value, $property)
+    {
+        if (is_object($value)) {
+            return property_exists($value, $property);
+        }
+
+        return array_key_exists($property, $value);
+    }
+
+    public static function propertyCount($value)
+    {
+        if (is_object($value)) {
+            return count(get_object_vars($value));
+        }
+
+        return count($value);
+    }
+
+    /**
+     * Check if the provided array is associative or not
+     *
+     * @param array $arr
+     *
+     * @return bool
+     */
+    private static function isAssociativeArray($arr)
+    {
+        return array_keys($arr) !== range(0, count($arr) - 1);
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/TypeCheck/StrictTypeCheck.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace JsonSchema\Constraints\TypeCheck;
+
+class StrictTypeCheck implements TypeCheckInterface
+{
+    public static function isObject($value)
+    {
+        return is_object($value);
+    }
+
+    public static function isArray($value)
+    {
+        return is_array($value);
+    }
+
+    public static function propertyGet($value, $property)
+    {
+        return $value->{$property};
+    }
+
+    public static function propertySet(&$value, $property, $data)
+    {
+        $value->{$property} = $data;
+    }
+
+    public static function propertyExists($value, $property)
+    {
+        return property_exists($value, $property);
+    }
+
+    public static function propertyCount($value)
+    {
+        if (!is_object($value)) {
+            return 0;
+        }
+
+        return count(get_object_vars($value));
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/TypeCheck/TypeCheckInterface.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace JsonSchema\Constraints\TypeCheck;
+
+interface TypeCheckInterface
+{
+    public static function isObject($value);
+
+    public static function isArray($value);
+
+    public static function propertyGet($value, $property);
+
+    public static function propertySet(&$value, $property, $data);
+
+    public static function propertyExists($value, $property);
+
+    public static function propertyCount($value);
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/TypeConstraint.php

@@ -0,0 +1,261 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Constraints;
+
+use JsonSchema\Entity\JsonPointer;
+use JsonSchema\Exception\InvalidArgumentException;
+use UnexpectedValueException as StandardUnexpectedValueException;
+
+/**
+ * The TypeConstraint Constraints, validates an element against a given type
+ *
+ * @author Robert Schönthal <seroscho@googlemail.com>
+ * @author Bruno Prieto Reis <bruno.p.reis@gmail.com>
+ */
+class TypeConstraint extends Constraint
+{
+    /**
+     * @var array|string[] type wordings for validation error messages
+     */
+    public static $wording = array(
+        'integer' => 'an integer',
+        'number'  => 'a number',
+        'boolean' => 'a boolean',
+        'object'  => 'an object',
+        'array'   => 'an array',
+        'string'  => 'a string',
+        'null'    => 'a null',
+        'any'     => null, // validation of 'any' is always true so is not needed in message wording
+        0         => null, // validation of a false-y value is always true, so not needed as well
+    );
+
+    /**
+     * {@inheritdoc}
+     */
+    public function check(&$value = null, $schema = null, ?JsonPointer $path = null, $i = null)
+    {
+        $type = isset($schema->type) ? $schema->type : null;
+        $isValid = false;
+        $wording = array();
+
+        if (is_array($type)) {
+            $this->validateTypesArray($value, $type, $wording, $isValid, $path);
+        } elseif (is_object($type)) {
+            $this->checkUndefined($value, $type, $path);
+
+            return;
+        } else {
+            $isValid = $this->validateType($value, $type);
+        }
+
+        if ($isValid === false) {
+            if (!is_array($type)) {
+                $this->validateTypeNameWording($type);
+                $wording[] = self::$wording[$type];
+            }
+            $this->addError($path, ucwords(gettype($value)) . ' value found, but ' .
+                $this->implodeWith($wording, ', ', 'or') . ' is required', 'type');
+        }
+    }
+
+    /**
+     * Validates the given $value against the array of types in $type. Sets the value
+     * of $isValid to true, if at least one $type mateches the type of $value or the value
+     * passed as $isValid is already true.
+     *
+     * @param mixed $value             Value to validate
+     * @param array $type              TypeConstraints to check agains
+     * @param array $validTypesWording An array of wordings of the valid types of the array $type
+     * @param bool  $isValid           The current validation value
+     * @param $path
+     */
+    protected function validateTypesArray(&$value, array $type, &$validTypesWording, &$isValid, $path)
+    {
+        foreach ($type as $tp) {
+            // $tp can be an object, if it's a schema instead of a simple type, validate it
+            // with a new type constraint
+            if (is_object($tp)) {
+                if (!$isValid) {
+                    $validator = $this->factory->createInstanceFor('type');
+                    $subSchema = new \stdClass();
+                    $subSchema->type = $tp;
+                    $validator->check($value, $subSchema, $path, null);
+                    $error = $validator->getErrors();
+                    $isValid = !(bool) $error;
+                    $validTypesWording[] = self::$wording['object'];
+                }
+            } else {
+                $this->validateTypeNameWording($tp);
+                $validTypesWording[] = self::$wording[$tp];
+                if (!$isValid) {
+                    $isValid = $this->validateType($value, $tp);
+                }
+            }
+        }
+    }
+
+    /**
+     * Implodes the given array like implode() with turned around parameters and with the
+     * difference, that, if $listEnd isn't false, the last element delimiter is $listEnd instead of
+     * $delimiter.
+     *
+     * @param array  $elements  The elements to implode
+     * @param string $delimiter The delimiter to use
+     * @param bool   $listEnd   The last delimiter to use (defaults to $delimiter)
+     *
+     * @return string
+     */
+    protected function implodeWith(array $elements, $delimiter = ', ', $listEnd = false)
+    {
+        if ($listEnd === false || !isset($elements[1])) {
+            return implode($delimiter, $elements);
+        }
+        $lastElement  = array_slice($elements, -1);
+        $firsElements = join($delimiter, array_slice($elements, 0, -1));
+        $implodedElements = array_merge(array($firsElements), $lastElement);
+
+        return join(" $listEnd ", $implodedElements);
+    }
+
+    /**
+     * Validates the given $type, if there's an associated self::$wording. If not, throws an
+     * exception.
+     *
+     * @param string $type The type to validate
+     *
+     * @throws StandardUnexpectedValueException
+     */
+    protected function validateTypeNameWording($type)
+    {
+        if (!array_key_exists($type, self::$wording)) {
+            throw new StandardUnexpectedValueException(
+                sprintf(
+                    'No wording for %s available, expected wordings are: [%s]',
+                    var_export($type, true),
+                    implode(', ', array_filter(self::$wording)))
+            );
+        }
+    }
+
+    /**
+     * Verifies that a given value is of a certain type
+     *
+     * @param mixed  $value Value to validate
+     * @param string $type  TypeConstraint to check against
+     *
+     * @throws InvalidArgumentException
+     *
+     * @return bool
+     */
+    protected function validateType(&$value, $type)
+    {
+        //mostly the case for inline schema
+        if (!$type) {
+            return true;
+        }
+
+        if ('any' === $type) {
+            return true;
+        }
+
+        if ('object' === $type) {
+            return $this->getTypeCheck()->isObject($value);
+        }
+
+        if ('array' === $type) {
+            return $this->getTypeCheck()->isArray($value);
+        }
+
+        $coerce = $this->factory->getConfig(Constraint::CHECK_MODE_COERCE_TYPES);
+
+        if ('integer' === $type) {
+            if ($coerce) {
+                $value = $this->toInteger($value);
+            }
+
+            return is_int($value);
+        }
+
+        if ('number' === $type) {
+            if ($coerce) {
+                $value = $this->toNumber($value);
+            }
+
+            return is_numeric($value) && !is_string($value);
+        }
+
+        if ('boolean' === $type) {
+            if ($coerce) {
+                $value = $this->toBoolean($value);
+            }
+
+            return is_bool($value);
+        }
+
+        if ('string' === $type) {
+            return is_string($value);
+        }
+
+        if ('email' === $type) {
+            return is_string($value);
+        }
+
+        if ('null' === $type) {
+            return is_null($value);
+        }
+
+        throw new InvalidArgumentException((is_object($value) ? 'object' : $value) . ' is an invalid type for ' . $type);
+    }
+
+    /**
+     * Converts a value to boolean. For example, "true" becomes true.
+     *
+     * @param $value The value to convert to boolean
+     *
+     * @return bool|mixed
+     */
+    protected function toBoolean($value)
+    {
+        if ($value === 'true') {
+            return true;
+        }
+
+        if ($value === 'false') {
+            return false;
+        }
+
+        return $value;
+    }
+
+    /**
+     * Converts a numeric string to a number. For example, "4" becomes 4.
+     *
+     * @param mixed $value the value to convert to a number
+     *
+     * @return int|float|mixed
+     */
+    protected function toNumber($value)
+    {
+        if (is_numeric($value)) {
+            return $value + 0; // cast to number
+        }
+
+        return $value;
+    }
+
+    protected function toInteger($value)
+    {
+        if (is_numeric($value) && (int) $value == $value) {
+            return (int) $value; // cast to number
+        }
+
+        return $value;
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/UndefinedConstraint.php

@@ -0,0 +1,420 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Constraints;
+
+use JsonSchema\Constraints\TypeCheck\LooseTypeCheck;
+use JsonSchema\Entity\JsonPointer;
+use JsonSchema\Exception\ValidationException;
+use JsonSchema\Uri\UriResolver;
+
+/**
+ * The UndefinedConstraint Constraints
+ *
+ * @author Robert Schönthal <seroscho@googlemail.com>
+ * @author Bruno Prieto Reis <bruno.p.reis@gmail.com>
+ */
+#[\AllowDynamicProperties]
+class UndefinedConstraint extends Constraint
+{
+    /**
+     * @var array List of properties to which a default value has been applied
+     */
+    protected $appliedDefaults = array();
+
+    /**
+     * {@inheritdoc}
+     */
+    public function check(&$value, $schema = null, ?JsonPointer $path = null, $i = null, $fromDefault = false)
+    {
+        if (is_null($schema) || !is_object($schema)) {
+            return;
+        }
+
+        $path = $this->incrementPath($path ?: new JsonPointer(''), $i);
+        if ($fromDefault) {
+            $path->setFromDefault();
+        }
+
+        // check special properties
+        $this->validateCommonProperties($value, $schema, $path, $i);
+
+        // check allOf, anyOf, and oneOf properties
+        $this->validateOfProperties($value, $schema, $path, '');
+
+        // check known types
+        $this->validateTypes($value, $schema, $path, $i);
+    }
+
+    /**
+     * Validates the value against the types
+     *
+     * @param mixed       $value
+     * @param mixed       $schema
+     * @param JsonPointer $path
+     * @param string      $i
+     */
+    public function validateTypes(&$value, $schema, JsonPointer $path, $i = null)
+    {
+        // check array
+        if ($this->getTypeCheck()->isArray($value)) {
+            $this->checkArray($value, $schema, $path, $i);
+        }
+
+        // check object
+        if (LooseTypeCheck::isObject($value)) { // object processing should always be run on assoc arrays,
+                                                // so use LooseTypeCheck here even if CHECK_MODE_TYPE_CAST
+                                                // is not set (i.e. don't use $this->getTypeCheck() here).
+            $this->checkObject(
+                $value,
+                $schema,
+                $path,
+                isset($schema->properties) ? $schema->properties : null,
+                isset($schema->additionalProperties) ? $schema->additionalProperties : null,
+                isset($schema->patternProperties) ? $schema->patternProperties : null,
+                $this->appliedDefaults
+            );
+        }
+
+        // check string
+        if (is_string($value)) {
+            $this->checkString($value, $schema, $path, $i);
+        }
+
+        // check numeric
+        if (is_numeric($value)) {
+            $this->checkNumber($value, $schema, $path, $i);
+        }
+
+        // check enum
+        if (isset($schema->enum)) {
+            $this->checkEnum($value, $schema, $path, $i);
+        }
+    }
+
+    /**
+     * Validates common properties
+     *
+     * @param mixed       $value
+     * @param mixed       $schema
+     * @param JsonPointer $path
+     * @param string      $i
+     */
+    protected function validateCommonProperties(&$value, $schema, JsonPointer $path, $i = '')
+    {
+        // if it extends another schema, it must pass that schema as well
+        if (isset($schema->extends)) {
+            if (is_string($schema->extends)) {
+                $schema->extends = $this->validateUri($schema, $schema->extends);
+            }
+            if (is_array($schema->extends)) {
+                foreach ($schema->extends as $extends) {
+                    $this->checkUndefined($value, $extends, $path, $i);
+                }
+            } else {
+                $this->checkUndefined($value, $schema->extends, $path, $i);
+            }
+        }
+
+        // Apply default values from schema
+        if (!$path->fromDefault()) {
+            $this->applyDefaultValues($value, $schema, $path);
+        }
+
+        // Verify required values
+        if ($this->getTypeCheck()->isObject($value)) {
+            if (!($value instanceof self) && isset($schema->required) && is_array($schema->required)) {
+                // Draft 4 - Required is an array of strings - e.g. "required": ["foo", ...]
+                foreach ($schema->required as $required) {
+                    if (!$this->getTypeCheck()->propertyExists($value, $required)) {
+                        $this->addError(
+                            $this->incrementPath($path ?: new JsonPointer(''), $required),
+                            'The property ' . $required . ' is required',
+                            'required'
+                        );
+                    }
+                }
+            } elseif (isset($schema->required) && !is_array($schema->required)) {
+                // Draft 3 - Required attribute - e.g. "foo": {"type": "string", "required": true}
+                if ($schema->required && $value instanceof self) {
+                    $propertyPaths = $path->getPropertyPaths();
+                    $propertyName = end($propertyPaths);
+                    $this->addError(
+                        $path,
+                        'The property ' . $propertyName . ' is required',
+                        'required'
+                    );
+                }
+            } else {
+                // if the value is both undefined and not required, skip remaining checks
+                // in this method which assume an actual, defined instance when validating.
+                if ($value instanceof self) {
+                    return;
+                }
+            }
+        }
+
+        // Verify type
+        if (!($value instanceof self)) {
+            $this->checkType($value, $schema, $path, $i);
+        }
+
+        // Verify disallowed items
+        if (isset($schema->disallow)) {
+            $initErrors = $this->getErrors();
+
+            $typeSchema = new \stdClass();
+            $typeSchema->type = $schema->disallow;
+            $this->checkType($value, $typeSchema, $path);
+
+            // if no new errors were raised it must be a disallowed value
+            if (count($this->getErrors()) == count($initErrors)) {
+                $this->addError($path, 'Disallowed value was matched', 'disallow');
+            } else {
+                $this->errors = $initErrors;
+            }
+        }
+
+        if (isset($schema->not)) {
+            $initErrors = $this->getErrors();
+            $this->checkUndefined($value, $schema->not, $path, $i);
+
+            // if no new errors were raised then the instance validated against the "not" schema
+            if (count($this->getErrors()) == count($initErrors)) {
+                $this->addError($path, 'Matched a schema which it should not', 'not');
+            } else {
+                $this->errors = $initErrors;
+            }
+        }
+
+        // Verify that dependencies are met
+        if (isset($schema->dependencies) && $this->getTypeCheck()->isObject($value)) {
+            $this->validateDependencies($value, $schema->dependencies, $path);
+        }
+    }
+
+    /**
+     * Check whether a default should be applied for this value
+     *
+     * @param mixed $schema
+     * @param mixed $parentSchema
+     * @param bool  $requiredOnly
+     *
+     * @return bool
+     */
+    private function shouldApplyDefaultValue($requiredOnly, $schema, $name = null, $parentSchema = null)
+    {
+        // required-only mode is off
+        if (!$requiredOnly) {
+            return true;
+        }
+        // draft-04 required is set
+        if (
+            $name !== null
+            && isset($parentSchema->required)
+            && is_array($parentSchema->required)
+            && in_array($name, $parentSchema->required)
+        ) {
+            return true;
+        }
+        // draft-03 required is set
+        if (isset($schema->required) && !is_array($schema->required) && $schema->required) {
+            return true;
+        }
+        // default case
+        return false;
+    }
+
+    /**
+     * Apply default values
+     *
+     * @param mixed       $value
+     * @param mixed       $schema
+     * @param JsonPointer $path
+     */
+    protected function applyDefaultValues(&$value, $schema, $path)
+    {
+        // only apply defaults if feature is enabled
+        if (!$this->factory->getConfig(self::CHECK_MODE_APPLY_DEFAULTS)) {
+            return;
+        }
+
+        // apply defaults if appropriate
+        $requiredOnly = $this->factory->getConfig(self::CHECK_MODE_ONLY_REQUIRED_DEFAULTS);
+        if (isset($schema->properties) && LooseTypeCheck::isObject($value)) {
+            // $value is an object or assoc array, and properties are defined - treat as an object
+            foreach ($schema->properties as $currentProperty => $propertyDefinition) {
+                $propertyDefinition = $this->factory->getSchemaStorage()->resolveRefSchema($propertyDefinition);
+                if (
+                    !LooseTypeCheck::propertyExists($value, $currentProperty)
+                    && property_exists($propertyDefinition, 'default')
+                    && $this->shouldApplyDefaultValue($requiredOnly, $propertyDefinition, $currentProperty, $schema)
+                ) {
+                    // assign default value
+                    if (is_object($propertyDefinition->default)) {
+                        LooseTypeCheck::propertySet($value, $currentProperty, clone $propertyDefinition->default);
+                    } else {
+                        LooseTypeCheck::propertySet($value, $currentProperty, $propertyDefinition->default);
+                    }
+                    $this->appliedDefaults[] = $currentProperty;
+                }
+            }
+        } elseif (isset($schema->items) && LooseTypeCheck::isArray($value)) {
+            $items = array();
+            if (LooseTypeCheck::isArray($schema->items)) {
+                $items = $schema->items;
+            } elseif (isset($schema->minItems) && count($value) < $schema->minItems) {
+                $items = array_fill(count($value), $schema->minItems - count($value), $schema->items);
+            }
+            // $value is an array, and items are defined - treat as plain array
+            foreach ($items as $currentItem => $itemDefinition) {
+                $itemDefinition = $this->factory->getSchemaStorage()->resolveRefSchema($itemDefinition);
+                if (
+                    !array_key_exists($currentItem, $value)
+                    && property_exists($itemDefinition, 'default')
+                    && $this->shouldApplyDefaultValue($requiredOnly, $itemDefinition)) {
+                    if (is_object($itemDefinition->default)) {
+                        $value[$currentItem] = clone $itemDefinition->default;
+                    } else {
+                        $value[$currentItem] = $itemDefinition->default;
+                    }
+                }
+                $path->setFromDefault();
+            }
+        } elseif (
+            $value instanceof self
+            && property_exists($schema, 'default')
+            && $this->shouldApplyDefaultValue($requiredOnly, $schema)) {
+            // $value is a leaf, not a container - apply the default directly
+            $value = is_object($schema->default) ? clone $schema->default : $schema->default;
+            $path->setFromDefault();
+        }
+    }
+
+    /**
+     * Validate allOf, anyOf, and oneOf properties
+     *
+     * @param mixed       $value
+     * @param mixed       $schema
+     * @param JsonPointer $path
+     * @param string      $i
+     */
+    protected function validateOfProperties(&$value, $schema, JsonPointer $path, $i = '')
+    {
+        // Verify type
+        if ($value instanceof self) {
+            return;
+        }
+
+        if (isset($schema->allOf)) {
+            $isValid = true;
+            foreach ($schema->allOf as $allOf) {
+                $initErrors = $this->getErrors();
+                $this->checkUndefined($value, $allOf, $path, $i);
+                $isValid = $isValid && (count($this->getErrors()) == count($initErrors));
+            }
+            if (!$isValid) {
+                $this->addError($path, 'Failed to match all schemas', 'allOf');
+            }
+        }
+
+        if (isset($schema->anyOf)) {
+            $isValid = false;
+            $startErrors = $this->getErrors();
+            $caughtException = null;
+            foreach ($schema->anyOf as $anyOf) {
+                $initErrors = $this->getErrors();
+                try {
+                    $this->checkUndefined($value, $anyOf, $path, $i);
+                    if ($isValid = (count($this->getErrors()) == count($initErrors))) {
+                        break;
+                    }
+                } catch (ValidationException $e) {
+                    $isValid = false;
+                }
+            }
+            if (!$isValid) {
+                $this->addError($path, 'Failed to match at least one schema', 'anyOf');
+            } else {
+                $this->errors = $startErrors;
+            }
+        }
+
+        if (isset($schema->oneOf)) {
+            $allErrors = array();
+            $matchedSchemas = 0;
+            $startErrors = $this->getErrors();
+            foreach ($schema->oneOf as $oneOf) {
+                try {
+                    $this->errors = array();
+                    $this->checkUndefined($value, $oneOf, $path, $i);
+                    if (count($this->getErrors()) == 0) {
+                        $matchedSchemas++;
+                    }
+                    $allErrors = array_merge($allErrors, array_values($this->getErrors()));
+                } catch (ValidationException $e) {
+                    // deliberately do nothing here - validation failed, but we want to check
+                    // other schema options in the OneOf field.
+                }
+            }
+            if ($matchedSchemas !== 1) {
+                $this->addErrors(array_merge($allErrors, $startErrors));
+                $this->addError($path, 'Failed to match exactly one schema', 'oneOf');
+            } else {
+                $this->errors = $startErrors;
+            }
+        }
+    }
+
+    /**
+     * Validate dependencies
+     *
+     * @param mixed       $value
+     * @param mixed       $dependencies
+     * @param JsonPointer $path
+     * @param string      $i
+     */
+    protected function validateDependencies($value, $dependencies, JsonPointer $path, $i = '')
+    {
+        foreach ($dependencies as $key => $dependency) {
+            if ($this->getTypeCheck()->propertyExists($value, $key)) {
+                if (is_string($dependency)) {
+                    // Draft 3 string is allowed - e.g. "dependencies": {"bar": "foo"}
+                    if (!$this->getTypeCheck()->propertyExists($value, $dependency)) {
+                        $this->addError($path, "$key depends on $dependency and $dependency is missing", 'dependencies');
+                    }
+                } elseif (is_array($dependency)) {
+                    // Draft 4 must be an array - e.g. "dependencies": {"bar": ["foo"]}
+                    foreach ($dependency as $d) {
+                        if (!$this->getTypeCheck()->propertyExists($value, $d)) {
+                            $this->addError($path, "$key depends on $d and $d is missing", 'dependencies');
+                        }
+                    }
+                } elseif (is_object($dependency)) {
+                    // Schema - e.g. "dependencies": {"bar": {"properties": {"foo": {...}}}}
+                    $this->checkUndefined($value, $dependency, $path, $i);
+                }
+            }
+        }
+    }
+
+    protected function validateUri($schema, $schemaUri = null)
+    {
+        $resolver = new UriResolver();
+        $retriever = $this->factory->getUriRetriever();
+
+        $jsonSchema = null;
+        if ($resolver->isValid($schemaUri)) {
+            $schemaId = property_exists($schema, 'id') ? $schema->id : null;
+            $jsonSchema = $retriever->retrieve($schemaId, $schemaUri);
+        }
+
+        return $jsonSchema;
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Entity/JsonPointer.php

@@ -0,0 +1,161 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Entity;
+
+use JsonSchema\Exception\InvalidArgumentException;
+
+/**
+ * @package JsonSchema\Entity
+ *
+ * @author Joost Nijhuis <jnijhuis81@gmail.com>
+ */
+class JsonPointer
+{
+    /** @var string */
+    private $filename;
+
+    /** @var string[] */
+    private $propertyPaths = array();
+
+    /**
+     * @var bool Whether the value at this path was set from a schema default
+     */
+    private $fromDefault = false;
+
+    /**
+     * @param string $value
+     *
+     * @throws InvalidArgumentException when $value is not a string
+     */
+    public function __construct($value)
+    {
+        if (!is_string($value)) {
+            throw new InvalidArgumentException('Ref value must be a string');
+        }
+
+        $splitRef = explode('#', $value, 2);
+        $this->filename = $splitRef[0];
+        if (array_key_exists(1, $splitRef)) {
+            $this->propertyPaths = $this->decodePropertyPaths($splitRef[1]);
+        }
+    }
+
+    /**
+     * @param string $propertyPathString
+     *
+     * @return string[]
+     */
+    private function decodePropertyPaths($propertyPathString)
+    {
+        $paths = array();
+        foreach (explode('/', trim($propertyPathString, '/')) as $path) {
+            $path = $this->decodePath($path);
+            if (is_string($path) && '' !== $path) {
+                $paths[] = $path;
+            }
+        }
+
+        return $paths;
+    }
+
+    /**
+     * @return array
+     */
+    private function encodePropertyPaths()
+    {
+        return array_map(
+            array($this, 'encodePath'),
+            $this->getPropertyPaths()
+        );
+    }
+
+    /**
+     * @param string $path
+     *
+     * @return string
+     */
+    private function decodePath($path)
+    {
+        return strtr($path, array('~1' => '/', '~0' => '~', '%25' => '%'));
+    }
+
+    /**
+     * @param string $path
+     *
+     * @return string
+     */
+    private function encodePath($path)
+    {
+        return strtr($path, array('/' => '~1', '~' => '~0', '%' => '%25'));
+    }
+
+    /**
+     * @return string
+     */
+    public function getFilename()
+    {
+        return $this->filename;
+    }
+
+    /**
+     * @return string[]
+     */
+    public function getPropertyPaths()
+    {
+        return $this->propertyPaths;
+    }
+
+    /**
+     * @param array $propertyPaths
+     *
+     * @return JsonPointer
+     */
+    public function withPropertyPaths(array $propertyPaths)
+    {
+        $new = clone $this;
+        $new->propertyPaths = $propertyPaths;
+
+        return $new;
+    }
+
+    /**
+     * @return string
+     */
+    public function getPropertyPathAsString()
+    {
+        return rtrim('#/' . implode('/', $this->encodePropertyPaths()), '/');
+    }
+
+    /**
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->getFilename() . $this->getPropertyPathAsString();
+    }
+
+    /**
+     * Mark the value at this path as being set from a schema default
+     */
+    public function setFromDefault()
+    {
+        $this->fromDefault = true;
+    }
+
+    /**
+     * Check whether the value at this path was set from a schema default
+     *
+     * @return bool
+     */
+    public function fromDefault()
+    {
+        return $this->fromDefault;
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Exception/ExceptionInterface.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace JsonSchema\Exception;
+
+interface ExceptionInterface
+{
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Exception/InvalidArgumentException.php

@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Exception;
+
+/**
+ * Wrapper for the InvalidArgumentException
+ */
+class InvalidArgumentException extends \InvalidArgumentException implements ExceptionInterface
+{
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Exception/InvalidConfigException.php

@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Exception;
+
+/**
+ * Wrapper for the ResourceNotFoundException
+ */
+class InvalidConfigException extends RuntimeException
+{
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Exception/InvalidSchemaException.php

@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Exception;
+
+/**
+ * Wrapper for the InvalidSchemaMediaType
+ */
+class InvalidSchemaException extends RuntimeException
+{
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Exception/InvalidSchemaMediaTypeException.php

@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Exception;
+
+/**
+ * Wrapper for the InvalidSchemaMediaType
+ */
+class InvalidSchemaMediaTypeException extends RuntimeException
+{
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Exception/InvalidSourceUriException.php

@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Exception;
+
+/**
+ * Wrapper for the InvalidSourceUriException
+ */
+class InvalidSourceUriException extends InvalidArgumentException
+{
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Exception/JsonDecodingException.php

@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Exception;
+
+/**
+ * Wrapper for the JsonDecodingException
+ */
+class JsonDecodingException extends RuntimeException
+{
+    public function __construct($code = JSON_ERROR_NONE, ?\Exception $previous = null)
+    {
+        switch ($code) {
+            case JSON_ERROR_DEPTH:
+                $message = 'The maximum stack depth has been exceeded';
+                break;
+            case JSON_ERROR_STATE_MISMATCH:
+                $message = 'Invalid or malformed JSON';
+                break;
+            case JSON_ERROR_CTRL_CHAR:
+                $message = 'Control character error, possibly incorrectly encoded';
+                break;
+            case JSON_ERROR_UTF8:
+                $message = 'Malformed UTF-8 characters, possibly incorrectly encoded';
+                break;
+            case JSON_ERROR_SYNTAX:
+                $message = 'JSON syntax is malformed';
+                break;
+            default:
+                $message = 'Syntax error';
+        }
+        parent::__construct($message, $code, $previous);
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Exception/ResourceNotFoundException.php

@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Exception;
+
+/**
+ * Wrapper for the ResourceNotFoundException
+ */
+class ResourceNotFoundException extends RuntimeException
+{
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Exception/RuntimeException.php

@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Exception;
+
+/**
+ * Wrapper for the RuntimeException
+ */
+class RuntimeException extends \RuntimeException implements ExceptionInterface
+{
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Exception/UnresolvableJsonPointerException.php

@@ -0,0 +1,19 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Exception;
+
+/**
+ * @package JsonSchema\Exception
+ *
+ * @author Joost Nijhuis <jnijhuis81@gmail.com>
+ */
+class UnresolvableJsonPointerException extends InvalidArgumentException
+{
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Exception/UriResolverException.php

@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Exception;
+
+/**
+ * Wrapper for the UriResolverException
+ */
+class UriResolverException extends RuntimeException
+{
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Exception/ValidationException.php

@@ -0,0 +1,14 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Exception;
+
+class ValidationException extends RuntimeException
+{
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Iterator/ObjectIterator.php

@@ -0,0 +1,149 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Iterator;
+
+/**
+ * @package JsonSchema\Iterator
+ *
+ * @author Joost Nijhuis <jnijhuis81@gmail.com>
+ */
+class ObjectIterator implements \Iterator, \Countable
+{
+    /** @var object */
+    private $object;
+
+    /** @var int */
+    private $position = 0;
+
+    /** @var array */
+    private $data = array();
+
+    /** @var bool */
+    private $initialized = false;
+
+    /**
+     * @param object $object
+     */
+    public function __construct($object)
+    {
+        $this->object = $object;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function current()
+    {
+        $this->initialize();
+
+        return $this->data[$this->position];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function next()
+    {
+        $this->initialize();
+        $this->position++;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function key()
+    {
+        $this->initialize();
+
+        return $this->position;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function valid()
+    {
+        $this->initialize();
+
+        return isset($this->data[$this->position]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function rewind()
+    {
+        $this->initialize();
+        $this->position = 0;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function count()
+    {
+        $this->initialize();
+
+        return count($this->data);
+    }
+
+    /**
+     * Initializer
+     */
+    private function initialize()
+    {
+        if (!$this->initialized) {
+            $this->data = $this->buildDataFromObject($this->object);
+            $this->initialized = true;
+        }
+    }
+
+    /**
+     * @param object $object
+     *
+     * @return array
+     */
+    private function buildDataFromObject($object)
+    {
+        $result = array();
+
+        $stack = new \SplStack();
+        $stack->push($object);
+
+        while (!$stack->isEmpty()) {
+            $current = $stack->pop();
+            if (is_object($current)) {
+                array_push($result, $current);
+            }
+
+            foreach ($this->getDataFromItem($current) as $propertyName => $propertyValue) {
+                if (is_object($propertyValue) || is_array($propertyValue)) {
+                    $stack->push($propertyValue);
+                }
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * @param object|array $item
+     *
+     * @return array
+     */
+    private function getDataFromItem($item)
+    {
+        if (!is_object($item) && !is_array($item)) {
+            return array();
+        }
+
+        return is_object($item) ? get_object_vars($item) : $item;
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Rfc3339.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace JsonSchema;
+
+class Rfc3339
+{
+    const REGEX = '/^(\d{4}-\d{2}-\d{2}[T ]{1}\d{2}:\d{2}:\d{2})(\.\d+)?(Z|([+-]\d{2}):?(\d{2}))$/';
+
+    /**
+     * Try creating a DateTime instance
+     *
+     * @param string $string
+     *
+     * @return \DateTime|null
+     */
+    public static function createFromString($string)
+    {
+        if (!preg_match(self::REGEX, strtoupper($string), $matches)) {
+            return null;
+        }
+
+        $dateAndTime = $matches[1];
+        $microseconds = $matches[2] ?: '.000000';
+        $timeZone = 'Z' !== $matches[3] ? $matches[4] . ':' . $matches[5] : '+00:00';
+        $dateFormat = strpos($dateAndTime, 'T') === false ? 'Y-m-d H:i:s.uP' : 'Y-m-d\TH:i:s.uP';
+        $dateTime = \DateTime::createFromFormat($dateFormat, $dateAndTime . $microseconds . $timeZone, new \DateTimeZone('UTC'));
+
+        return $dateTime ?: null;
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/SchemaStorage.php

@@ -0,0 +1,169 @@
+<?php
+
+namespace JsonSchema;
+
+use JsonSchema\Constraints\BaseConstraint;
+use JsonSchema\Entity\JsonPointer;
+use JsonSchema\Exception\UnresolvableJsonPointerException;
+use JsonSchema\Uri\UriResolver;
+use JsonSchema\Uri\UriRetriever;
+
+class SchemaStorage implements SchemaStorageInterface
+{
+    const INTERNAL_PROVIDED_SCHEMA_URI = 'internal://provided-schema/';
+
+    protected $uriRetriever;
+    protected $uriResolver;
+    protected $schemas = array();
+
+    public function __construct(
+        ?UriRetrieverInterface $uriRetriever = null,
+        ?UriResolverInterface $uriResolver = null
+    ) {
+        $this->uriRetriever = $uriRetriever ?: new UriRetriever();
+        $this->uriResolver = $uriResolver ?: new UriResolver();
+    }
+
+    /**
+     * @return UriRetrieverInterface
+     */
+    public function getUriRetriever()
+    {
+        return $this->uriRetriever;
+    }
+
+    /**
+     * @return UriResolverInterface
+     */
+    public function getUriResolver()
+    {
+        return $this->uriResolver;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addSchema($id, $schema = null)
+    {
+        if (is_null($schema) && $id !== self::INTERNAL_PROVIDED_SCHEMA_URI) {
+            // if the schema was user-provided to Validator and is still null, then assume this is
+            // what the user intended, as there's no way for us to retrieve anything else. User-supplied
+            // schemas do not have an associated URI when passed via Validator::validate().
+            $schema = $this->uriRetriever->retrieve($id);
+        }
+
+        // cast array schemas to object
+        if (is_array($schema)) {
+            $schema = BaseConstraint::arrayToObjectRecursive($schema);
+        }
+
+        // workaround for bug in draft-03 & draft-04 meta-schemas (id & $ref defined with incorrect format)
+        // see https://github.com/json-schema-org/JSON-Schema-Test-Suite/issues/177#issuecomment-293051367
+        if (is_object($schema) && property_exists($schema, 'id')) {
+            if ($schema->id == 'http://json-schema.org/draft-04/schema#') {
+                $schema->properties->id->format = 'uri-reference';
+            } elseif ($schema->id == 'http://json-schema.org/draft-03/schema#') {
+                $schema->properties->id->format = 'uri-reference';
+                $schema->properties->{'$ref'}->format = 'uri-reference';
+            }
+        }
+
+        // resolve references
+        $this->expandRefs($schema, $id);
+
+        $this->schemas[$id] = $schema;
+    }
+
+    /**
+     * Recursively resolve all references against the provided base
+     *
+     * @param mixed  $schema
+     * @param string $base
+     */
+    private function expandRefs(&$schema, $base = null)
+    {
+        if (!is_object($schema)) {
+            if (is_array($schema)) {
+                foreach ($schema as &$member) {
+                    $this->expandRefs($member, $base);
+                }
+            }
+
+            return;
+        }
+
+        if (property_exists($schema, 'id') && is_string($schema->id) && $base != $schema->id) {
+            $base = $this->uriResolver->resolve($schema->id, $base);
+        }
+
+        if (property_exists($schema, '$ref') && is_string($schema->{'$ref'})) {
+            $refPointer = new JsonPointer($this->uriResolver->resolve($schema->{'$ref'}, $base));
+            $schema->{'$ref'} = (string) $refPointer;
+        }
+
+        foreach ($schema as &$member) {
+            $this->expandRefs($member, $base);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getSchema($id)
+    {
+        if (!array_key_exists($id, $this->schemas)) {
+            $this->addSchema($id);
+        }
+
+        return $this->schemas[$id];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function resolveRef($ref)
+    {
+        $jsonPointer = new JsonPointer($ref);
+
+        // resolve filename for pointer
+        $fileName = $jsonPointer->getFilename();
+        if (!strlen($fileName)) {
+            throw new UnresolvableJsonPointerException(sprintf(
+                "Could not resolve fragment '%s': no file is defined",
+                $jsonPointer->getPropertyPathAsString()
+            ));
+        }
+
+        // get & process the schema
+        $refSchema = $this->getSchema($fileName);
+        foreach ($jsonPointer->getPropertyPaths() as $path) {
+            if (is_object($refSchema) && property_exists($refSchema, $path)) {
+                $refSchema = $this->resolveRefSchema($refSchema->{$path});
+            } elseif (is_array($refSchema) && array_key_exists($path, $refSchema)) {
+                $refSchema = $this->resolveRefSchema($refSchema[$path]);
+            } else {
+                throw new UnresolvableJsonPointerException(sprintf(
+                    'File: %s is found, but could not resolve fragment: %s',
+                    $jsonPointer->getFilename(),
+                    $jsonPointer->getPropertyPathAsString()
+                ));
+            }
+        }
+
+        return $refSchema;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function resolveRefSchema($refSchema)
+    {
+        if (is_object($refSchema) && property_exists($refSchema, '$ref') && is_string($refSchema->{'$ref'})) {
+            $newSchema = $this->resolveRef($refSchema->{'$ref'});
+            $refSchema = (object) (get_object_vars($refSchema) + get_object_vars($newSchema));
+            unset($refSchema->{'$ref'});
+        }
+
+        return $refSchema;
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/SchemaStorageInterface.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace JsonSchema;
+
+interface SchemaStorageInterface
+{
+    /**
+     * Adds schema with given identifier
+     *
+     * @param string $id
+     * @param object $schema
+     */
+    public function addSchema($id, $schema = null);
+
+    /**
+     * Returns schema for given identifier, or null if it does not exist
+     *
+     * @param string $id
+     *
+     * @return object
+     */
+    public function getSchema($id);
+
+    /**
+     * Returns schema for given reference with all sub-references resolved
+     *
+     * @param string $ref
+     *
+     * @return object
+     */
+    public function resolveRef($ref);
+
+    /**
+     * Returns schema referenced by '$ref' property
+     *
+     * @param mixed $refSchema
+     *
+     * @return object
+     */
+    public function resolveRefSchema($refSchema);
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Uri/Retrievers/AbstractRetriever.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * JsonSchema
+ *
+ * @filesource
+ */
+
+namespace JsonSchema\Uri\Retrievers;
+
+/**
+ * AbstractRetriever implements the default shared behavior
+ * that all descendant Retrievers should inherit
+ *
+ * @author Steven Garcia <webwhammy@gmail.com>
+ */
+abstract class AbstractRetriever implements UriRetrieverInterface
+{
+    /**
+     * Media content type
+     *
+     * @var string
+     */
+    protected $contentType;
+
+    /**
+     * {@inheritdoc}
+     *
+     * @see \JsonSchema\Uri\Retrievers\UriRetrieverInterface::getContentType()
+     */
+    public function getContentType()
+    {
+        return $this->contentType;
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Uri/Retrievers/Curl.php

@@ -0,0 +1,83 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Uri\Retrievers;
+
+use JsonSchema\Exception\RuntimeException;
+use JsonSchema\Validator;
+
+/**
+ * Tries to retrieve JSON schemas from a URI using cURL library
+ *
+ * @author Sander Coolen <sander@jibber.nl>
+ */
+class Curl extends AbstractRetriever
+{
+    protected $messageBody;
+
+    public function __construct()
+    {
+        if (!function_exists('curl_init')) {
+            // Cannot test this, because curl_init is present on all test platforms plus mock
+            throw new RuntimeException('cURL not installed'); // @codeCoverageIgnore
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @see \JsonSchema\Uri\Retrievers\UriRetrieverInterface::retrieve()
+     */
+    public function retrieve($uri)
+    {
+        $ch = curl_init();
+
+        curl_setopt($ch, CURLOPT_URL, $uri);
+        curl_setopt($ch, CURLOPT_HEADER, true);
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept: ' . Validator::SCHEMA_MEDIA_TYPE));
+
+        $response = curl_exec($ch);
+        if (false === $response) {
+            throw new \JsonSchema\Exception\ResourceNotFoundException('JSON schema not found');
+        }
+
+        $this->fetchMessageBody($response);
+        $this->fetchContentType($response);
+
+        curl_close($ch);
+
+        return $this->messageBody;
+    }
+
+    /**
+     * @param string $response cURL HTTP response
+     */
+    private function fetchMessageBody($response)
+    {
+        preg_match("/(?:\r\n){2}(.*)$/ms", $response, $match);
+        $this->messageBody = $match[1];
+    }
+
+    /**
+     * @param string $response cURL HTTP response
+     *
+     * @return bool Whether the Content-Type header was found or not
+     */
+    protected function fetchContentType($response)
+    {
+        if (0 < preg_match("/Content-Type:(\V*)/ims", $response, $match)) {
+            $this->contentType = trim($match[1]);
+
+            return true;
+        }
+
+        return false;
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Uri/Retrievers/FileGetContents.php

@@ -0,0 +1,93 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Uri\Retrievers;
+
+use JsonSchema\Exception\ResourceNotFoundException;
+
+/**
+ * Tries to retrieve JSON schemas from a URI using file_get_contents()
+ *
+ * @author Sander Coolen <sander@jibber.nl>
+ */
+class FileGetContents extends AbstractRetriever
+{
+    protected $messageBody;
+
+    /**
+     * {@inheritdoc}
+     *
+     * @see \JsonSchema\Uri\Retrievers\UriRetrieverInterface::retrieve()
+     */
+    public function retrieve($uri)
+    {
+        $errorMessage = null;
+        set_error_handler(function ($errno, $errstr) use (&$errorMessage) {
+            $errorMessage = $errstr;
+        });
+        $response = file_get_contents($uri);
+        restore_error_handler();
+
+        if ($errorMessage) {
+            throw new ResourceNotFoundException($errorMessage);
+        }
+
+        if (false === $response) {
+            throw new ResourceNotFoundException('JSON schema not found at ' . $uri);
+        }
+
+        if ($response == ''
+            && substr($uri, 0, 7) == 'file://' && substr($uri, -1) == '/'
+        ) {
+            throw new ResourceNotFoundException('JSON schema not found at ' . $uri);
+        }
+
+        $this->messageBody = $response;
+        if (!empty($http_response_header)) {
+            // $http_response_header cannot be tested, because it's defined in the method's local scope
+            // See http://php.net/manual/en/reserved.variables.httpresponseheader.php for more info.
+            $this->fetchContentType($http_response_header); // @codeCoverageIgnore
+        } else {                                            // @codeCoverageIgnore
+            // Could be a "file://" url or something else - fake up the response
+            $this->contentType = null;
+        }
+
+        return $this->messageBody;
+    }
+
+    /**
+     * @param array $headers HTTP Response Headers
+     *
+     * @return bool Whether the Content-Type header was found or not
+     */
+    private function fetchContentType(array $headers)
+    {
+        foreach ($headers as $header) {
+            if ($this->contentType = self::getContentTypeMatchInHeader($header)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * @param string $header
+     *
+     * @return string|null
+     */
+    protected static function getContentTypeMatchInHeader($header)
+    {
+        if (0 < preg_match("/Content-Type:(\V*)/ims", $header, $match)) {
+            return trim($match[1]);
+        }
+
+        return null;
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Uri/Retrievers/PredefinedArray.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace JsonSchema\Uri\Retrievers;
+
+use JsonSchema\Validator;
+
+/**
+ * URI retrieved based on a predefined array of schemas
+ *
+ * @example
+ *
+ *      $retriever = new PredefinedArray(array(
+ *          'http://acme.com/schemas/person#'  => '{ ... }',
+ *          'http://acme.com/schemas/address#' => '{ ... }',
+ *      ))
+ *
+ *      $schema = $retriever->retrieve('http://acme.com/schemas/person#');
+ */
+class PredefinedArray extends AbstractRetriever
+{
+    /**
+     * Contains schemas as URI => JSON
+     *
+     * @var array
+     */
+    private $schemas;
+
+    /**
+     * Constructor
+     *
+     * @param array  $schemas
+     * @param string $contentType
+     */
+    public function __construct(array $schemas, $contentType = Validator::SCHEMA_MEDIA_TYPE)
+    {
+        $this->schemas     = $schemas;
+        $this->contentType = $contentType;
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @see \JsonSchema\Uri\Retrievers\UriRetrieverInterface::retrieve()
+     */
+    public function retrieve($uri)
+    {
+        if (!array_key_exists($uri, $this->schemas)) {
+            throw new \JsonSchema\Exception\ResourceNotFoundException(sprintf(
+                'The JSON schema "%s" was not found.',
+                $uri
+            ));
+        }
+
+        return $this->schemas[$uri];
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Uri/Retrievers/UriRetrieverInterface.php

@@ -0,0 +1,36 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Uri\Retrievers;
+
+/**
+ * Interface for URI retrievers
+ *
+ * @author Sander Coolen <sander@jibber.nl>
+ */
+interface UriRetrieverInterface
+{
+    /**
+     * Retrieve a schema from the specified URI
+     *
+     * @param string $uri URI that resolves to a JSON schema
+     *
+     * @throws \JsonSchema\Exception\ResourceNotFoundException
+     *
+     * @return mixed string|null
+     */
+    public function retrieve($uri);
+
+    /**
+     * Get media content type
+     *
+     * @return string
+     */
+    public function getContentType();
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Uri/UriResolver.php

@@ -0,0 +1,175 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Uri;
+
+use JsonSchema\Exception\UriResolverException;
+use JsonSchema\UriResolverInterface;
+
+/**
+ * Resolves JSON Schema URIs
+ *
+ * @author Sander Coolen <sander@jibber.nl>
+ */
+class UriResolver implements UriResolverInterface
+{
+    /**
+     * Parses a URI into five main components
+     *
+     * @param string $uri
+     *
+     * @return array
+     */
+    public function parse($uri)
+    {
+        preg_match('|^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?|', $uri, $match);
+
+        $components = array();
+        if (5 < count($match)) {
+            $components =  array(
+                'scheme'    => $match[2],
+                'authority' => $match[4],
+                'path'      => $match[5]
+            );
+        }
+        if (7 < count($match)) {
+            $components['query'] = $match[7];
+        }
+        if (9 < count($match)) {
+            $components['fragment'] = $match[9];
+        }
+
+        return $components;
+    }
+
+    /**
+     * Builds a URI based on n array with the main components
+     *
+     * @param array $components
+     *
+     * @return string
+     */
+    public function generate(array $components)
+    {
+        $uri = $components['scheme'] . '://'
+             . $components['authority']
+             . $components['path'];
+
+        if (array_key_exists('query', $components) && strlen($components['query'])) {
+            $uri .= '?' . $components['query'];
+        }
+        if (array_key_exists('fragment', $components)) {
+            $uri .= '#' . $components['fragment'];
+        }
+
+        return $uri;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function resolve($uri, $baseUri = null)
+    {
+        // treat non-uri base as local file path
+        if (
+            !is_null($baseUri) &&
+            !filter_var($baseUri, \FILTER_VALIDATE_URL) &&
+            !preg_match('|^[^/]+://|u', $baseUri)
+        ) {
+            if (is_file($baseUri)) {
+                $baseUri = 'file://' . realpath($baseUri);
+            } elseif (is_dir($baseUri)) {
+                $baseUri = 'file://' . realpath($baseUri) . '/';
+            } else {
+                $baseUri = 'file://' . getcwd() . '/' . $baseUri;
+            }
+        }
+
+        if ($uri == '') {
+            return $baseUri;
+        }
+
+        $components = $this->parse($uri);
+        $path = $components['path'];
+
+        if (!empty($components['scheme'])) {
+            return $uri;
+        }
+        $baseComponents = $this->parse($baseUri);
+        $basePath = $baseComponents['path'];
+
+        $baseComponents['path'] = self::combineRelativePathWithBasePath($path, $basePath);
+        if (isset($components['fragment'])) {
+            $baseComponents['fragment'] = $components['fragment'];
+        }
+
+        return $this->generate($baseComponents);
+    }
+
+    /**
+     * Tries to glue a relative path onto an absolute one
+     *
+     * @param string $relativePath
+     * @param string $basePath
+     *
+     * @throws UriResolverException
+     *
+     * @return string Merged path
+     */
+    public static function combineRelativePathWithBasePath($relativePath, $basePath)
+    {
+        $relativePath = self::normalizePath($relativePath);
+        if ($relativePath == '') {
+            return $basePath;
+        }
+        if ($relativePath[0] == '/') {
+            return $relativePath;
+        }
+
+        $basePathSegments = explode('/', $basePath);
+
+        preg_match('|^/?(\.\./(?:\./)*)*|', $relativePath, $match);
+        $numLevelUp = strlen($match[0]) /3 + 1;
+        if ($numLevelUp >= count($basePathSegments)) {
+            throw new UriResolverException(sprintf("Unable to resolve URI '%s' from base '%s'", $relativePath, $basePath));
+        }
+
+        $basePathSegments = array_slice($basePathSegments, 0, -$numLevelUp);
+        $path = preg_replace('|^/?(\.\./(\./)*)*|', '', $relativePath);
+
+        return implode('/', $basePathSegments) . '/' . $path;
+    }
+
+    /**
+     * Normalizes a URI path component by removing dot-slash and double slashes
+     *
+     * @param string $path
+     *
+     * @return string
+     */
+    private static function normalizePath($path)
+    {
+        $path = preg_replace('|((?<!\.)\./)*|', '', $path);
+        $path = preg_replace('|//|', '/', $path);
+
+        return $path;
+    }
+
+    /**
+     * @param string $uri
+     *
+     * @return bool
+     */
+    public function isValid($uri)
+    {
+        $components = $this->parse($uri);
+
+        return !empty($components);
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Uri/UriRetriever.php

@@ -0,0 +1,349 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema\Uri;
+
+use JsonSchema\Exception\InvalidSchemaMediaTypeException;
+use JsonSchema\Exception\JsonDecodingException;
+use JsonSchema\Exception\ResourceNotFoundException;
+use JsonSchema\Uri\Retrievers\FileGetContents;
+use JsonSchema\Uri\Retrievers\UriRetrieverInterface;
+use JsonSchema\UriRetrieverInterface as BaseUriRetrieverInterface;
+use JsonSchema\Validator;
+
+/**
+ * Retrieves JSON Schema URIs
+ *
+ * @author Tyler Akins <fidian@rumkin.com>
+ */
+class UriRetriever implements BaseUriRetrieverInterface
+{
+    /**
+     * @var array Map of URL translations
+     */
+    protected $translationMap = array(
+        // use local copies of the spec schemas
+        '|^https?://json-schema.org/draft-(0[34])/schema#?|' => 'package://dist/schema/json-schema-draft-$1.json'
+    );
+
+    /**
+     * @var array A list of endpoints for media type check exclusion
+     */
+    protected $allowedInvalidContentTypeEndpoints = array(
+        'http://json-schema.org/',
+        'https://json-schema.org/'
+    );
+
+    /**
+     * @var null|UriRetrieverInterface
+     */
+    protected $uriRetriever = null;
+
+    /**
+     * @var array|object[]
+     *
+     * @see loadSchema
+     */
+    private $schemaCache = array();
+
+    /**
+     * Adds an endpoint to the media type validation exclusion list
+     *
+     * @param string $endpoint
+     */
+    public function addInvalidContentTypeEndpoint($endpoint)
+    {
+        $this->allowedInvalidContentTypeEndpoints[] = $endpoint;
+    }
+
+    /**
+     * Guarantee the correct media type was encountered
+     *
+     * @param UriRetrieverInterface $uriRetriever
+     * @param string                $uri
+     *
+     * @return bool|void
+     */
+    public function confirmMediaType($uriRetriever, $uri)
+    {
+        $contentType = $uriRetriever->getContentType();
+
+        if (is_null($contentType)) {
+            // Well, we didn't get an invalid one
+            return;
+        }
+
+        if (in_array($contentType, array(Validator::SCHEMA_MEDIA_TYPE, 'application/json'))) {
+            return;
+        }
+
+        foreach ($this->allowedInvalidContentTypeEndpoints as $endpoint) {
+            if (strpos($uri, $endpoint) === 0) {
+                return true;
+            }
+        }
+
+        throw new InvalidSchemaMediaTypeException(sprintf('Media type %s expected', Validator::SCHEMA_MEDIA_TYPE));
+    }
+
+    /**
+     * Get a URI Retriever
+     *
+     * If none is specified, sets a default FileGetContents retriever and
+     * returns that object.
+     *
+     * @return UriRetrieverInterface
+     */
+    public function getUriRetriever()
+    {
+        if (is_null($this->uriRetriever)) {
+            $this->setUriRetriever(new FileGetContents());
+        }
+
+        return $this->uriRetriever;
+    }
+
+    /**
+     * Resolve a schema based on pointer
+     *
+     * URIs can have a fragment at the end in the format of
+     * #/path/to/object and we are to look up the 'path' property of
+     * the first object then the 'to' and 'object' properties.
+     *
+     * @param object $jsonSchema JSON Schema contents
+     * @param string $uri        JSON Schema URI
+     *
+     * @throws ResourceNotFoundException
+     *
+     * @return object JSON Schema after walking down the fragment pieces
+     */
+    public function resolvePointer($jsonSchema, $uri)
+    {
+        $resolver = new UriResolver();
+        $parsed = $resolver->parse($uri);
+        if (empty($parsed['fragment'])) {
+            return $jsonSchema;
+        }
+
+        $path = explode('/', $parsed['fragment']);
+        while ($path) {
+            $pathElement = array_shift($path);
+            if (!empty($pathElement)) {
+                $pathElement = str_replace('~1', '/', $pathElement);
+                $pathElement = str_replace('~0', '~', $pathElement);
+                if (!empty($jsonSchema->$pathElement)) {
+                    $jsonSchema = $jsonSchema->$pathElement;
+                } else {
+                    throw new ResourceNotFoundException(
+                        'Fragment "' . $parsed['fragment'] . '" not found'
+                        . ' in ' . $uri
+                    );
+                }
+
+                if (!is_object($jsonSchema)) {
+                    throw new ResourceNotFoundException(
+                        'Fragment part "' . $pathElement . '" is no object '
+                        . ' in ' . $uri
+                    );
+                }
+            }
+        }
+
+        return $jsonSchema;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function retrieve($uri, $baseUri = null, $translate = true)
+    {
+        $resolver = new UriResolver();
+        $resolvedUri = $fetchUri = $resolver->resolve($uri, $baseUri);
+
+        //fetch URL without #fragment
+        $arParts = $resolver->parse($resolvedUri);
+        if (isset($arParts['fragment'])) {
+            unset($arParts['fragment']);
+            $fetchUri = $resolver->generate($arParts);
+        }
+
+        // apply URI translations
+        if ($translate) {
+            $fetchUri = $this->translate($fetchUri);
+        }
+
+        $jsonSchema = $this->loadSchema($fetchUri);
+
+        // Use the JSON pointer if specified
+        $jsonSchema = $this->resolvePointer($jsonSchema, $resolvedUri);
+
+        if ($jsonSchema instanceof \stdClass) {
+            $jsonSchema->id = $resolvedUri;
+        }
+
+        return $jsonSchema;
+    }
+
+    /**
+     * Fetch a schema from the given URI, json-decode it and return it.
+     * Caches schema objects.
+     *
+     * @param string $fetchUri Absolute URI
+     *
+     * @return object JSON schema object
+     */
+    protected function loadSchema($fetchUri)
+    {
+        if (isset($this->schemaCache[$fetchUri])) {
+            return $this->schemaCache[$fetchUri];
+        }
+
+        $uriRetriever = $this->getUriRetriever();
+        $contents = $this->uriRetriever->retrieve($fetchUri);
+        $this->confirmMediaType($uriRetriever, $fetchUri);
+        $jsonSchema = json_decode($contents);
+
+        if (JSON_ERROR_NONE < $error = json_last_error()) {
+            throw new JsonDecodingException($error);
+        }
+
+        $this->schemaCache[$fetchUri] = $jsonSchema;
+
+        return $jsonSchema;
+    }
+
+    /**
+     * Set the URI Retriever
+     *
+     * @param UriRetrieverInterface $uriRetriever
+     *
+     * @return $this for chaining
+     */
+    public function setUriRetriever(UriRetrieverInterface $uriRetriever)
+    {
+        $this->uriRetriever = $uriRetriever;
+
+        return $this;
+    }
+
+    /**
+     * Parses a URI into five main components
+     *
+     * @param string $uri
+     *
+     * @return array
+     */
+    public function parse($uri)
+    {
+        preg_match('|^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?|', $uri, $match);
+
+        $components = array();
+        if (5 < count($match)) {
+            $components =  array(
+                'scheme'    => $match[2],
+                'authority' => $match[4],
+                'path'      => $match[5]
+            );
+        }
+
+        if (7 < count($match)) {
+            $components['query'] = $match[7];
+        }
+
+        if (9 < count($match)) {
+            $components['fragment'] = $match[9];
+        }
+
+        return $components;
+    }
+
+    /**
+     * Builds a URI based on n array with the main components
+     *
+     * @param array $components
+     *
+     * @return string
+     */
+    public function generate(array $components)
+    {
+        $uri = $components['scheme'] . '://'
+             . $components['authority']
+             . $components['path'];
+
+        if (array_key_exists('query', $components)) {
+            $uri .= $components['query'];
+        }
+
+        if (array_key_exists('fragment', $components)) {
+            $uri .= $components['fragment'];
+        }
+
+        return $uri;
+    }
+
+    /**
+     * Resolves a URI
+     *
+     * @param string $uri     Absolute or relative
+     * @param string $baseUri Optional base URI
+     *
+     * @return string
+     */
+    public function resolve($uri, $baseUri = null)
+    {
+        $components = $this->parse($uri);
+        $path = $components['path'];
+
+        if ((array_key_exists('scheme', $components)) && ('http' === $components['scheme'])) {
+            return $uri;
+        }
+
+        $baseComponents = $this->parse($baseUri);
+        $basePath = $baseComponents['path'];
+
+        $baseComponents['path'] = UriResolver::combineRelativePathWithBasePath($path, $basePath);
+
+        return $this->generate($baseComponents);
+    }
+
+    /**
+     * @param string $uri
+     *
+     * @return bool
+     */
+    public function isValid($uri)
+    {
+        $components = $this->parse($uri);
+
+        return !empty($components);
+    }
+
+    /**
+     * Set a URL translation rule
+     */
+    public function setTranslation($from, $to)
+    {
+        $this->translationMap[$from] = $to;
+    }
+
+    /**
+     * Apply URI translation rules
+     */
+    public function translate($uri)
+    {
+        foreach ($this->translationMap as $from => $to) {
+            $uri = preg_replace($from, $to, $uri);
+        }
+
+        // translate references to local files within the json-schema package
+        $uri = preg_replace('|^package://|', sprintf('file://%s/', realpath(__DIR__ . '/../../..')), $uri);
+
+        return $uri;
+    }
+}

vendor/justinrainbow/json-schema/src/JsonSchema/UriResolverInterface.php

@@ -0,0 +1,26 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema;
+
+/**
+ * @package JsonSchema
+ */
+interface UriResolverInterface
+{
+    /**
+     * Resolves a URI
+     *
+     * @param string      $uri     Absolute or relative
+     * @param null|string $baseUri Optional base URI
+     *
+     * @return string Absolute URI
+     */
+    public function resolve($uri, $baseUri = null);
+}

vendor/justinrainbow/json-schema/src/JsonSchema/UriRetrieverInterface.php

@@ -0,0 +1,26 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema;
+
+/**
+ * @package JsonSchema
+ */
+interface UriRetrieverInterface
+{
+    /**
+     * Retrieve a URI
+     *
+     * @param string      $uri     JSON Schema URI
+     * @param null|string $baseUri
+     *
+     * @return object JSON Schema contents
+     */
+    public function retrieve($uri, $baseUri = null);
+}

vendor/justinrainbow/json-schema/src/JsonSchema/Validator.php

@@ -0,0 +1,88 @@
+<?php
+
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace JsonSchema;
+
+use JsonSchema\Constraints\BaseConstraint;
+use JsonSchema\Constraints\Constraint;
+
+/**
+ * A JsonSchema Constraint
+ *
+ * @author Robert Schönthal <seroscho@googlemail.com>
+ * @author Bruno Prieto Reis <bruno.p.reis@gmail.com>
+ *
+ * @see    README.md
+ */
+class Validator extends BaseConstraint
+{
+    const SCHEMA_MEDIA_TYPE = 'application/schema+json';
+
+    const ERROR_NONE                    = 0x00000000;
+    const ERROR_ALL                     = 0xFFFFFFFF;
+    const ERROR_DOCUMENT_VALIDATION     = 0x00000001;
+    const ERROR_SCHEMA_VALIDATION       = 0x00000002;
+
+    /**
+     * Validates the given data against the schema and returns an object containing the results
+     * Both the php object and the schema are supposed to be a result of a json_decode call.
+     * The validation works as defined by the schema proposal in http://json-schema.org.
+     *
+     * Note that the first argument is passed by reference, so you must pass in a variable.
+     */
+    public function validate(&$value, $schema = null, $checkMode = null)
+    {
+        // make sure $schema is an object
+        if (is_array($schema)) {
+            $schema = self::arrayToObjectRecursive($schema);
+        }
+
+        // set checkMode
+        $initialCheckMode = $this->factory->getConfig();
+        if ($checkMode !== null) {
+            $this->factory->setConfig($checkMode);
+        }
+
+        // add provided schema to SchemaStorage with internal URI to allow internal $ref resolution
+        if (is_object($schema) && property_exists($schema, 'id')) {
+            $schemaURI = $schema->id;
+        } else {
+            $schemaURI = SchemaStorage::INTERNAL_PROVIDED_SCHEMA_URI;
+        }
+        $this->factory->getSchemaStorage()->addSchema($schemaURI, $schema);
+
+        $validator = $this->factory->createInstanceFor('schema');
+        $validator->check(
+            $value,
+            $this->factory->getSchemaStorage()->getSchema($schemaURI)
+        );
+
+        $this->factory->setConfig($initialCheckMode);
+
+        $this->addErrors(array_unique($validator->getErrors(), SORT_REGULAR));
+
+        return $validator->getErrorMask();
+    }
+
+    /**
+     * Alias to validate(), to maintain backwards-compatibility with the previous API
+     */
+    public function check($value, $schema)
+    {
+        return $this->validate($value, $schema);
+    }
+
+    /**
+     * Alias to validate(), to maintain backwards-compatibility with the previous API
+     */
+    public function coerce(&$value, $schema)
+    {
+        return $this->validate($value, $schema, Constraint::CHECK_MODE_COERCE_TYPES);
+    }
+}