Validator::getArguments() - Code Metrics - horros/agavi2 - Measure and Improve Code Quality continuously with Scrutinizer

Validator::getArguments() A
last analyzed 2017-05-30 13:20 UTC

↳ Parent: Validator
Complexity

Conditions	1
Paths	1
Size

Total Lines	4
Code Lines	2
Duplication

Lines	0
Ratio	0 %
Importance

Changes
Metric	Value
cc	1
eloc	2
nc	1
nop	0
dl	0
loc	4
rs	10
c	0
b	0
f	0
<?php
namespace Agavi\Validator;

// +---------------------------------------------------------------------------+
// | This file is part of the Agavi package.                                   |
// | Copyright (c) 2005-2011 the Agavi Project.                                |
// |                                                                           |
// | For the full copyright and license information, please view the LICENSE   |
// | file that was distributed with this source code. You can also view the    |
// | LICENSE file online at http://www.agavi.org/LICENSE.txt                   |
// |   vi: set noexpandtab:                                                    |
// |   Local Variables:                                                        |
// |   indent-tabs-mode: t                                                     |
// |   End:                                                                    |
// +---------------------------------------------------------------------------+
use Agavi\Core\Context;
use Agavi\Exception\ConfigurationException;
use Agavi\Exception\ValidatorException;
use Agavi\Request\RequestDataHolder;
use Agavi\Util\ArrayPathDefinition;
use Agavi\Util\ParameterHolder;
use Agavi\Util\Toolkit;
use Agavi\Util\VirtualArrayPath;

/**
 * Validator allows you to validate input
 *
 * Parameters for use in most validators:
 *   'name'       name of validator
 *   'base'       base path for validation of arrays
 *   'arguments'  an array of input parameter keys to validate
 *   'export'     destination for exported data
 *   'depends'    list of dependencies needed by the validator
 *   'provides'   list of dependencies the validator provides after success
 *   'severity'   error severity in case of failure
 *   'error'      error message when validation fails
 *   'errors'     an array of errors with the reason as key
 *   'required'   if true the validator will fail when the input parameter is
 *                not set
 *
 * @package    agavi
 * @subpackage validator
 *
 * @author     Dominik del Bondio <[email protected]>
 * @author     Uwe Mesecke <[email protected]>
 * @copyright  Authors
 * @copyright  The Agavi Project
 *
 * @since      0.11.0
 *
 * @version    $Id$
 */
abstract class Validator extends ParameterHolder
{
    /**
     * validator field success flag
     */
    const NOT_PROCESSED = -1;

    /**
     * validator error severity (the validator succeeded)
     */
    const SUCCESS = 0;

    /**
     * validator error severity (validator failed but without impact on result
     * of whole validation process, completely silent and does not remove the
     * "failed" parameters from the input parameters)
     */
    const INFO = 100;
    
    /**
     * validator error severity (validator failed but without impact on result
     * of whole validation process and completely silent)
     */
    const SILENT = 200;
    const NONE = Validator::SILENT;
    
    /**
     * validator error severity (validator failed but without impact on result
     * of whole validation process)
     */
    const NOTICE = 300;

    /**
     * validation error severity (validator failed but validation process
     * continues)
     */
    const ERROR = 400;

    /**
     * validation error severity (validator failed and validation process will
     * be aborted)
     */
    const CRITICAL = 500;

    /**
     * @var        Context An Context instance.
     */
    protected $context = null;

    /**
     * @var        ValidatorContainerInterface parent validator container (in
     *                                      most cases the validator manager)
     */
    protected $parentContainer = null;

    /**
     * @var        VirtualArrayPath The current base for input names,
     *                                   dependencies etc.
     */
    protected $curBase = null;

    /**
     * @var        string The name of this validator instance. This will either
     *                    be the user supplied name (if any) or a random string
     */
    protected $name = null;

    /**
     * @var        RequestDataHolder The parameters which should be validated
     *                                  in the current validation run.
     */
    protected $validationParameters = null;

    /**
     * @var        array The name of the request parameters serving as argument to
     *                   this validator.
     */
    protected $arguments = array();

    /**
     * @var        array The error messages.
     */
    protected $errorMessages = array();

    /**
     * @var        ValidationIncident The current incident.
     */
    protected $incident = null;
    
    /**
     * @var        array The affected arguments of this validation run.
     */
    protected $affectedArguments = array();

    /**
     * Returns the base path of this validator.
     *
     * @return     VirtualArrayPath The basepath of this validator
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    public function getBase()
    {
        return $this->curBase;
    }

    /**
     * Returns the "keys" in the path of the base
     *
     * @return     array The keys from left to right
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    public function getBaseKeys()
    {
        $keys = array();
        $l = $this->curBase->length();
        for ($i = 1; $i < $l; ++$i) {
            $keys[] = $this->curBase->get($i);
        }

        return $keys;
    }

    /**
     * Returns the last "keys" in the path of the base
     *
     * @return     mixed The key
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    public function getLastKey()
    {
        $base = $this->curBase;
        if ($base->length() == 0 || ($base->length() == 1 && $base->isAbsolute())) {
            return null;
        }

        return $base->get($base->length() - 1);
    }

    /**
     * Returns the name of this validator.
     *
     * @return     string The name
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * Initialize this validator.
     *
     * @param      Context $context The Context.
     * @param      array   $parameters An array of validator parameters.
     * @param      array   $arguments An array of argument names which should be validated.
     * @param      array   $errors An array of error messages.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    public function initialize(Context $context, array $parameters = array(), array $arguments = array(), array $errors = array())
    {
        $this->context = $context;

        $this->arguments = $arguments;
        $this->errorMessages = $errors;

        if (!isset($parameters['depends']) || !is_array($parameters['depends'])) {

            $parameters['depends'] = (!empty($parameters['depends'])) ? explode(' ', $parameters['depends']) : array();
        }
        if (!isset($parameters['provides']) || !is_array($parameters['provides'])) {

            $parameters['provides'] = (!empty($parameters['provides'])) ? explode(' ', $parameters['provides']) : array();
        }

        if (!isset($parameters['source'])) {
            $parameters['source'] = RequestDataHolder::SOURCE_PARAMETERS;
        }

        $this->setParameters($parameters);

        $this->name = $this->getParameter('name', Toolkit::uniqid());
    }

    /**
     * Retrieve the current application context.
     *
     * @return     Context The current Context instance.
     *
     * @author     David Zülke <[email protected]>
     * @since      0.11.0
     */
    final public function getContext()
    {
        return $this->context;
    }

    /**
     * Retrieve the parent container.
     *
     * @return     ValidatorContainerInterface The parent container.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    final public function getParentContainer()
    {
        return $this->parentContainer;
    }

    /**
     * Sets the parent container.
     *
     * @param      ValidatorContainerInterface $parent The parent container.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    public function setParentContainer(ValidatorContainerInterface $parent)
    {
        // we need a reference here, so when looping happens in a parent
        // we always have the right base
        $this->curBase = $parent->getBase();
        $this->parentContainer = $parent;
    }

    /**
     * Validates the input.
     *
     * This is the method where all the validation stuff is going to happen.
     * Inherited classes have to implement their validation logic here. It
     * returns only true or false as validation results. The handling of
     * error severities is done by the validator itself and should not concern
     * the writer of a new validator.
     *
     * @return     bool The result of the validation.
     *
     * @author     Uwe Mesecke <[email protected]>
     * @since      0.11.0
     */
    abstract protected function validate();

    /**
     * Shuts the validator down.
     *
     * This method can be used in validators to shut down used models or
     * other activities before the validator is killed.
     *
     * @see        AgaviValidationManager::shutdown()
     *
     * @author     Uwe Mesecke <[email protected]>
     * @since      0.11.0
     */
    public function shutdown()
    {
    }

    /**
     * Returns the specified input value.
     *
     * The given parameter is fetched from the request. You should _always_
     * use this method to fetch data from the request because it pays attention
     * to specified paths.
     *
     * @param      string $paramName The name of the parameter to fetch from request.
     *
     * @return     mixed The input value from the validation input.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    protected function &getData($paramName)
    {
        $paramType = $this->getParameter('source');
        $array =& $this->validationParameters->getAll($paramType);
        return $this->curBase->getValueByChildPath($paramName, $array);
    }

    /**
     * Returns true if this validator has multiple arguments which need to be
     * validated.
     *
     * @return     bool Whether this validator has multiple arguments or not.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    protected function hasMultipleArguments()
    {
        return count($this->arguments) > 1;
    }

    /**
     * Returns the name of the argument which should be validated.
     * Returns the name of the first (and typically only) argument by default, or,
     * if a string is provided to the method, returns the name of the argument
     * as configured for that identifier.
     *
     * @param      string $name The optional argument identifier, as configured.
     *
     * @return     string The resulting name of the argument in the request data.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @author     David Zülke <[email protected]>
     *
     * @since      0.11.0
     */
    protected function getArgument($name = null)
    {
        if ($name === null) {
            $argNames = $this->arguments;
            reset($argNames);
            return current($argNames);
        } else {
            if (isset($this->arguments[$name])) {
                return $this->arguments[$name];
            }
        }
    }

    /**
     * Returns all arguments which should be validated.
     *
     * @return     array A list of input arguments names.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    protected function getArguments()
    {
        return $this->arguments;
    }
    
    /**
     * Sets the arguments which should be flagged with the result of the
     * validator
     *
     * @param      array $arguments A list of (absolute) argument names
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    protected function setAffectedArguments($arguments)
    {
        $this->affectedArguments = $arguments;
    }

    /**
     * Returns whether all arguments are set in the validation input parameters.
     * Set means anything but empty string.
     *
     * @param      bool $throwError Whether an error should be thrown for each missing
     *                  argument if this validator is required.
     *
     * @return     bool Whether the arguments are set.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    protected function checkAllArgumentsSet($throwError = true)
    {
        $isRequired = $this->getParameter('required', true);
        $paramType = $this->getParameter('source');
        $result = true;

        foreach ($this->getArguments() as $argument) {
            $pName = $this->curBase->pushRetNew($argument)->__toString();
            if ($this->validationParameters->isValueEmpty($paramType, $pName)) {
                if ($throwError && $isRequired) {
                    $this->throwError('required', $pName);
                }
                $result = false;
            }
        }
        return $result;
    }

    /**
     * Retrieves the error message for the given index with fallback.
     *
     * If the given index does not exist in the error messages array, it first
     * checks if an unnamed error message exists and returns it or falls back the
     * the backup message.
     *
     * @param      string $index The name of the error.
     * @param      string $backupMessage The backup error message.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    protected function getErrorMessage($index = null, $backupMessage = null)
    {
        if ($index !== null && isset($this->errorMessages[$index])) {
            $error = $this->errorMessages[$index];
        } elseif (isset($this->errorMessages[''])) {
            // check if a default error exists.
            $error = $this->errorMessages[''];
        } else {
            $error = $backupMessage;
        }

        return $error;
    }

    /**
     * Submits an error to the error manager.
     *
     * Will look up the index in the errors array with automatic fallback to the
     * default error. You can optionally specify the fields affected by this
     * error. The error will be appended to the current incident.
     *
     * @param      string $index The name of the error parameter to fetch the message
     *                    from.
     * @param      string|array $affectedArgument The arguments which are affected by this error.
     *                          If null is given it will affect all fields.
     * @param      boolean $argumentsRelative Whether the argument names in $affectedArgument are
     *                     relative or absolute.
     * @param      boolean $setAffected Whether to set the affected fields of the validator
     *                     to the $affectedArguments
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    protected function throwError($index = null, $affectedArgument = null, $argumentsRelative = false, $setAffected = false)
    {
        if ($affectedArgument === null) {
            $affectedArguments = $this->getFullArgumentNames();
        } else {
            $affectedArguments = (array) $affectedArgument;
            if ($argumentsRelative) {
                foreach ($affectedArguments as &$arg) {
                    $arg = $this->curBase->pushRetNew($arg)->__toString();
                }
            }
        }
        
        if ($setAffected) {
            $this->affectedArguments = $affectedArguments;
        }

        $error = $this->getErrorMessage($index);

        if ($this->hasParameter('translation_domain')) {
            $error = $this->getContext()->getTranslationManager()->_($error, $this->getParameter('translation_domain'));
        }

        if (!$this->incident) {
            $this->incident = new ValidationIncident($this, self::mapErrorCode($this->getParameter('severity', 'error')));
        }

        foreach ($affectedArguments as &$argument) {
            $argument = new ValidationArgument($argument, $this->getParameter('source'));
        }
        
        if ($error !== null || count($affectedArguments) != 0) {
            // don't throw empty error messages without affected fields
            $this->incident->addError(new ValidationError($error, $index, $affectedArguments));
        }
    }

    /**
     * Exports a value back into the request.
     *
     * Exports data into the request at the index given in the parameter
     * 'export'. If there is no such parameter, then the method returns
     * without exporting.
     *
     * Similar to getData() you should always use export() to submit data to
     * the request because it pays attention to paths and otherwise you could
     * overwrite stuff you don't want to.
     *
     * @param      mixed $value The value to be exported.
     * @param      mixed $argument An optional parameter name which should be used for
     *                   exporting instead of the "export" attribute value, or an
     *                   AgaviValidationArgument object if the value should be
     *                   exported to a different source.
     * @param      int   $result The result status code to use for the exported value.
     *                   Defaults to AgaviValidator::SUCCESS.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @author     David Zülke <[email protected]>
     * @since      0.11.0
     */
    protected function export($value, $argument = null, $result = null)
    {
        if ($argument === null) {
            $argument = $this->getParameter('export');
        }
        
        if ($result === null) {
            $result = $this->getParameter('export_severity', Validator::SUCCESS);
            if (!is_numeric($result) && defined($result)) {
                $result = constant($result);
            }
        }

        if (!($argument instanceof ValidationArgument) && (!is_string($argument) || $argument === '')) {
            return;
        }

        if ($argument instanceof ValidationArgument) {
            $source = $argument->getSource();
            $name = $argument->getName();
        } else {
            $source = $this->getParameter('export_to_source', $this->getParameter('source'));
            $name = $argument;
        }

        $array =& $this->validationParameters->getAll($source);
        $currentParts = $this->curBase->getParts();
        
        if (count($currentParts) > 0 && strpos($name, '%') !== false) {
            // this is a validator which actually has a base (<arguments base="xx">) set
            // and the export name contains sprintf syntax
            $name = vsprintf($name, $currentParts);
        }
        // CAUTION
        // we had a feature here during development that would allow [] at the end to append values to an array
        // that would, however, mean that we have to cast the value to an array, and, either way, a user would be able to manipulate the keys
        // example: we export to foo[], and the user supplies ?foo[28] in the URL. that means our export will be in foo[29]. foo[28] will be removed by the validation, but the keys are still potentially harmful
        // that's why we decided to remove this again
        $cp = new VirtualArrayPath($name);
        $cp->setValue($array, $value);
        if ($this->parentContainer !== null) {
            // make sure the parameter doesn't get removed by the validation manager
            if (is_array($value)) {
                // for arrays all child elements need to be marked as not processed
                foreach (ArrayPathDefinition::getFlatKeyNames($value) as $keyName) {
                    $this->parentContainer->addArgumentResult(new ValidationArgument($cp->pushRetNew($keyName)->__toString(), $source), $result, $this);
                }
            }
            $this->parentContainer->addArgumentResult(new ValidationArgument($cp->__toString(), $source), $result, $this);
        }
    }

    /**
     * Validates this validator in the given base.
     *
     * @param      VirtualArrayPath $base The base in which the input should be
     *                                   validated.
     *
     * @return     int AgaviValidator::SUCCESS if validation succeeded or given
     *                 error severity.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @author     Uwe Mesecke <[email protected]>
     * @since      0.11.0
     */
    protected function validateInBase(VirtualArrayPath $base)
    {
        $base = clone $base;
        if ($base->length() == 0) {
            // we have an empty base so we do the actual validation
            if ($this->getDependencyManager() && (count($this->getParameter('depends')) > 0 && !$this->getDependencyManager()->checkDependencies($this->getParameter('depends'), $this->curBase))) {

                // dependencies not met, exit with success
                return self::NOT_PROCESSED;
            }

            $this->affectedArguments = $this->getFullArgumentNames();

            $result = self::SUCCESS;
            $errorCode = self::mapErrorCode($this->getParameter('severity', 'error'));

            if ($this->checkAllArgumentsSet(false)) {
                if (!$this->validate()) {
                    // validation failed, exit with configured error code
                    $result = $errorCode;
                }
            } else {
                if ($this->getParameter('required', true)) {
                    $this->throwError('required');
                    $result = $errorCode;
                } else {
                    // we don't throw an error here because this is not an incident per se
                    // but rather a non validated field
                    $result = self::NOT_PROCESSED;
                }
            }

            if ($this->parentContainer !== null) {
                foreach ($this->affectedArguments as $fieldname) {
                    $this->parentContainer->addArgumentResult(new ValidationArgument($fieldname, $this->getParameter('source')), $result, $this);
                }

                if ($this->incident) {
                    $this->parentContainer->addIncident($this->incident);
                }
            }

            $this->incident = null;
            // put dependencies provided by this validator into manager
            if ($this->getDependencyManager() && ($result == self::SUCCESS && count($this->getParameter('provides')) > 0)) {

                $this->getDependencyManager()->addDependTokens($this->getParameter('provides'), $this->curBase);
            }
            return $result;
        } elseif ($base->left() !== '') {
            /*
			 * the next component in the base is no wildcard so we
			 * just put it into our own base and validate further
			 * into the base.
			 */

            $this->curBase->push($base->shift());
            $ret = $this->validateInBase($base);
            $this->curBase->pop();

            return $ret;
        } else {
            /*
			 * now we have a wildcard as next component so we collect
			 * all defined value names in the request at the path
			 * specified by our own base and validate in each of that
			 * names
			 */
            $names = $this->getKeysInCurrentBase();

            // if the names array is empty this means we need to throw an error since
            // this means the input doesn't exist
            if (count($names) == 0) {
                if ($this->getDependencyManager() && (count($this->getParameter('depends')) > 0 && !$this->getDependencyManager()->checkDependencies($this->getParameter('depends'), $this->curBase))) {
                    // since the dependencies are only ever checked if the base gets empty (which happens when
                    // the validation is about to validate an argument), but we are already bailing out in an earlier
                    // stage, lets do the dependency check so the validator doesn't accidently return an error even
                    // if it's dependencies aren't met
                    return self::NOT_PROCESSED;
                } else {
                    if ($this->getParameter('required', true)) {
                        $this->throwError('required');
                        return self::mapErrorCode($this->getParameter('severity', 'error'));
                    } else {
                        return self::NOT_PROCESSED;
                    }
                }
            }

            // throw the wildcard away
            $base->shift();

            $ret = self::NOT_PROCESSED;

            // validate in every name defined in the request
            foreach ($names as $name) {
                $newBase = clone $base;
                $newBase->unshift($name);
                $t = $this->validateInBase($newBase);

                if ($t == self::CRITICAL) {
                    return $t;
                }

                // remember the highest error severity
                $ret = max($ret, $t);
            }

            return $ret;
        }
    }

    /**
     * Executes the validator.
     *
     * @param      RequestDataHolder $parameters The data which should be validated.
     *
     * @return     int The validation result (see severity constants).
     *
     * @author     Uwe Mesecke <[email protected]>
     * @since      0.11.0
     */
    public function execute(RequestDataHolder $parameters)
    {
        if ($this->getParameter('source') != RequestDataHolder::SOURCE_PARAMETERS && !in_array($this->getParameter('source'), $parameters->getSourceNames())) {
            throw new ConfigurationException('Unknown source "' . $this->getParameter('source') . '" specified in validator ' . $this->getName());
        }

        $this->validationParameters = $parameters;
        $base = new VirtualArrayPath($this->getParameter('base'));

        $res = $this->validateInBase($base);
        if ($this->incident && $this->parentContainer) {
            $this->parentContainer->addIncident($this->incident);
            $this->incident = null;
        }
        return $res;
    }

    /**
     * Converts string severity codes into integer values
     * (see severity constants)
     *
     * critical -> Validator::CRITICAL
     * error    -> Validator::ERROR
     * notice   -> Validator::NOTICE
     * none     -> Validator::NONE
     * success  -> not allowed to be specified by the user.
     *
     * @param      string $code The error severity as string.
     *
     * @return     int The error severity as in (see severity constants).
     *
     * @throws     <b>AgaviValidatorException</b> if the input was no known
     *                                           severity
     *
     * @author     Uwe Mesecke <[email protected]>
     * @since      0.11.0
     */
    public static function mapErrorCode($code)
    {
        switch (strtolower($code)) {
            case 'critical':
                return self::CRITICAL;
            case 'error':
                return self::ERROR;
            case 'notice':
                return self::NOTICE;
            case 'none':
            case 'silent':
                return self::SILENT;
            case 'info':
                return self::INFO;
            default:
                throw new ValidatorException('unknown error code: '.$code);
        }
    }

    /**
     * Returns all available keys in the currently set base.
     *
     * @return     array The available keys.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    protected function getKeysInCurrentBase()
    {
        $paramType = $this->getParameter('source');

        $array = $this->validationParameters->getAll($paramType);
        $names = $this->curBase->getValue($array, array());

        return is_array($names) ? array_keys($names) : array();
    }

    /**
     * Returns all arguments with their full path.
     *
     * @return     array The arguments.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    protected function getFullArgumentNames()
    {
        $arguments = array();
        foreach ($this->getArguments() as $argument) {
            if ($argument) {
                $arguments[] = $this->curBase->pushRetNew($argument)->__toString();
            } else {
                $arguments[] = $this->curBase->__toString();
            }
        }

        return $arguments;
    }

    /**
     * Returns the depency manager of the parent container if any.
     *
     * @return     DependencyManager The parent's dependency manager.
     *
     * @author     Dominik del Bondio <[email protected]>
     * @since      0.11.0
     */
    public function getDependencyManager()
    {
        if ($this->parentContainer instanceof ValidatorContainerInterface) {
            return $this->parentContainer->getDependencyManager();
        }
        return null;
    }
}

horros / agavi2

Validator::getArguments() A last analyzed 2017-05-30 13:20 UTC

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like

Validator::getArguments() A
last analyzed 2017-05-30 13:20 UTC
