IncidentsTable::getStackHash() - Code Metrics - Inspection of "Limit number of stored errors to 20" - phpmyadmin/error-reporting-server - Measure and Improve Code Quality continuously with Scrutinizer

Completed
Push — master ( 7f3e63...891bdf )

by Michal
created 2017-07-11 07:51 UTC
IncidentsTable::getStackHash() A

↳ Parent: IncidentsTable
Complexity

Conditions	4
Paths	4
Size

Total Lines	15
Code Lines	9
Duplication

Lines	0
Ratio	0 %
Code Coverage

Tests	9
CRAP Score	4
Importance

Changes
Metric	Value
dl	0
loc	15
rs	9.2
c	0
b	0
f	0
ccs	9
cts	9
cp	1
cc	4
eloc	9
nc	4
nop	1
crap	4
<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */

/**
 * An incident a representing a single incident of a submited bug.
 *
 * phpMyAdmin Error reporting server
 * Copyright (c) phpMyAdmin project (https://www.phpmyadmin.net/)
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright Copyright (c) phpMyAdmin project (https://www.phpmyadmin.net/)
 * @license   https://opensource.org/licenses/mit-license.php MIT License
 *
 * @see      https://www.phpmyadmin.net/
 */

namespace App\Model\Table;

use Cake\Log\Log;
use Cake\Model\Model;
use Cake\ORM\Table;
use Cake\ORM\TableRegistry;

/**
 * An incident a representing a single incident of a submited bug.
 */
class IncidentsTable extends Table
{
    /**
     * @var array
     *
     * @see http://book.cakephp.org/2.0/en/models/behaviors.html#using-behaviors
     * @see Model::$actsAs
     */
    public $actsAs = array('Summarizable');

    /**
     * @var array
     *
     * @see http://book.cakephp.org/2.0/en/models/model-attributes.html#validate
     * @see http://book.cakephp.org/2.0/en/models/data-validation.html
     * @see Model::$validate
     */
    public $validate = array(
        'pma_version' => array(
            'rule' => 'notEmpty',
            'required' => true,
        ),
        'php_version' => array(
            'rule' => 'notEmpty',
            'required' => true,
        ),
        'full_report' => array(
            'rule' => 'notEmpty',
            'required' => true,
        ),
        'stacktrace' => array(
            'rule' => 'notEmpty',
            'required' => true,
        ),
        'browser' => array(
            'rule' => 'notEmpty',
            'required' => true,
        ),
        'stackhash' => array(
            'rule' => 'notEmpty',
            'required' => true,
        ),
        'user_os' => array(
            'rule' => 'notEmpty',
            'required' => true,
        ),
        'locale' => array(
            'rule' => 'notEmpty',
            'required' => true,
        ),
        'script_name' => array(
            'rule' => 'notEmpty',
            'required' => true,
        ),
        'server_software' => array(
            'rule' => 'notEmpty',
            'required' => true,
        ),
        'configuration_storage' => array(
            'rule' => 'notEmpty',
            'required' => true,
        ),
    );

    /**
     * @var array
     *
     * @see http://book.cakephp.org/2.0/en/models/associations-linking-models-together.html#belongsto
     * @see Model::$belongsTo
     */

    /**
     * The fields which are summarized in the report page with charts and are also
     * used in the overall stats and charts for the website.
     *
     * @var array
     */
    public $summarizableFields = array(
        'browser', 'pma_version', 'php_version',
        'locale', 'server_software', 'user_os', 'script_name',
        'configuration_storage',
    );

    public function __construct($id = false, $table = null, $ds = null)
    {
        parent::__construct($id, $table, $ds);


        $this->filterTimes = array(
class MyClass { }

$x = new MyClass();
$x->foo = true;
            'all_time' => array(
                'label' => 'All Time',
                'limit' => null,
                'group' => "DATE_FORMAT(Incidents.created, '%m %Y')",
            ),
            'day' => array(
                'label' => 'Last Day',
                'limit' => date('Y-m-d', strtotime('-1 day')),
                'group' => "DATE_FORMAT(Incidents.created, '%a %b %d %Y %H')",
            ),
            'week' => array(
                'label' => 'Last Week',
                'limit' => date('Y-m-d', strtotime('-1 week')),
                'group' => "DATE_FORMAT(Incidents.created, '%a %b %d %Y')",
            ),
            'month' => array(
                'label' => 'Last Month',
                'limit' => date('Y-m-d', strtotime('-1 month')),
                'group' => "DATE_FORMAT(Incidents.created, '%a %b %d %Y')",
            ),
            'year' => array(
                'label' => 'Last Year',
                'limit' => date('Y-m-d', strtotime('-1 year')),
                'group' => "DATE_FORMAT(Incidents.created, '%b %u %Y')",
            ),
        );
    }

    /**
     * creates an incident/report record given a raw bug report object.
     *
     * This gets a decoded bug report from the submitted json body. This has not
     * yet been santized. It either adds it as an incident to another report or
     * creates a new report if nothing matches.
     *
     * @param array $bugReport the bug report being submitted
     *
     * @return array of:
     *          1. array of inserted incident ids. If the report/incident was not
     *               correctly saved, false is put in it place.
     *          2. array of newly created report ids. If no new report was created,
     *               an empty array is returned
     */
    public function createIncidentFromBugReport($bugReport)
    {
        if ($bugReport == null) {
            return array('incidents' => array(false), 'reports' => array());
        }
        $incident_ids = array();    // array to hold ids of all the inserted incidents
        $new_report_ids = array(); // array to hold ids of all newly created reports

        // Avoid storing too many errors from single report
        if (isset($bugReport['errors']) && count($bugReport['errors']) > 20) {
            $bugReport['errors'] = array_slice($bugReport['errors'], 0, 20);
        }

        // Also sanitizes the bug report
        $schematizedIncidents = $this->_getSchematizedIncidents($bugReport);
        $incidentsTable = TableRegistry::get('Incidents');
        $reportsTable = TableRegistry::get('Reports');
        foreach ($schematizedIncidents as $index => $si) {

            // find closest report. If not found, create a new report.
            $closestReport = $this->_getClosestReport($bugReport, $index);
            if ($closestReport) {

                $si['report_id'] = $closestReport['id'];
                $si = $incidentsTable->newEntity($si);
                $si->created = date('Y-m-d H:i:s', time());
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                $si->modified = date('Y-m-d H:i:s', time());
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}

                $this->_logLongIncidentSubmissions($si, $incident_ids);
                if (in_array(false, $incident_ids)) {
                    break;
                }
            } else {
                // no close report. Create a new report.
                $report = $this->_getReportDetails($bugReport, $index);

                $this->_logLongIncidentSubmissions($si, $incident_ids);
                if (in_array(false, $incident_ids)) {
                    break;
                }

                $report = $reportsTable->newEntity($report);
                $report->created = date('Y-m-d H:i:s', time());
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                $report->modified = date('Y-m-d H:i:s', time());
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                $reportsTable->save($report);

                $si['report_id'] = $report->id;
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                $new_report_ids[] = $report->id;
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                $si = $incidentsTable->newEntity($si);
                $si->created = date('Y-m-d H:i:s', time());
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                $si->modified = date('Y-m-d H:i:s', time());
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
            }

            $isSaved = $incidentsTable->save($si);
            if ($isSaved) {
                array_push($incident_ids, $si->id);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                if (!$closestReport) {

                    // add notifications entry
                    $tmpIncident = $incidentsTable->findById($si->id)->all()->first();
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                    if (!TableRegistry::get('Notifications')->addNotifications(intval($tmpIncident['report_id']))) {
                        Log::write(
                            'error',
                            'ERRORED: Notification::addNotifications() failed on Report#'
                                . $tmpIncident['report_id'],
                            'alert'
                        );
                    }
                }
            } else {
                array_push($incident_ids, false);
            }
        }

        return array(
            'incidents' => $incident_ids,
            'reports' => $new_report_ids
        );
    }

    /**
     * retrieves the closest report to a given bug report.
     *
     * it checks for another report with the same line number, filename and
     * pma_version
     *
     * @param array $bugReport the bug report being checked
     *                         Integer $index: for php exception type
     * @param mixed $index
     *
     * @return array the first similar report or null
     */
    protected function _getClosestReport($bugReport, $index = 0)
    {
        if (isset($bugReport['exception_type'])
            && $bugReport['exception_type'] == 'php'
        ) {
            $location = $bugReport['errors'][$index]['file'];
            $linenumber = $bugReport['errors'][$index]['lineNum'];
        } else {
            list($location, $linenumber) =
                    $this->_getIdentifyingLocation($bugReport['exception']['stack']);
        }
        $report = TableRegistry::get('Reports')->findByLocationAndLinenumberAndPmaVersion(
                    $location, $linenumber,
                    $this->getStrippedPmaVersion($bugReport['pma_version'])
                )->all()->first();

        return $report;
    }

    /**
     * creates the report data from an incident that has no related report.
     *
     * @param array $bugReport the bug report the report record is being created for
     *                         Integer $index: for php exception type
     * @param mixed $index
     *
     * @return array an array with the report fields can be used with Report->save
     */
    protected function _getReportDetails($bugReport, $index = 0)
    {
        if (isset($bugReport['exception_type'])
            && $bugReport['exception_type'] == 'php'
        ) {
            $location = $bugReport['errors'][$index]['file'];
            $linenumber = $bugReport['errors'][$index]['lineNum'];
            $reportDetails = array(
                    'error_message' => $bugReport['errors'][$index]['msg'],
                    'error_name' => $bugReport['errors'][$index]['type'],
                    );
            $exception_type = 1;
        } else {
            list($location, $linenumber) =
                $this->_getIdentifyingLocation($bugReport['exception']['stack']);

            $reportDetails = array(
                    'error_message' => $bugReport['exception']['message'],
                    'error_name' => $bugReport['exception']['name'],
                    );
            $exception_type = 0;
        }

        $reportDetails = array_merge(
            $reportDetails,
            array(
                'status' => 'new',
                'location' => $location,
                'linenumber' => is_null($linenumber) ? 0 : $linenumber,
                'pma_version' => $bugReport['pma_version'],
                'exception_type' => $exception_type,
            )
        );

        return $reportDetails;
    }

    /**
     * creates the incident data from the submitted bug report.
     *
     * @param array $bugReport the bug report the report record is being created for
     *
     * @return array an array of schematized incident.
     *               Can be used with Incident->save
     */
    protected function _getSchematizedIncidents($bugReport)
    {
        //$bugReport = Sanitize::clean($bugReport, array('escape' => false));
        $schematizedReports = array();
        $schematizedCommonReport = array(
            'pma_version' => $this->getStrippedPmaVersion($bugReport['pma_version']),
            'php_version' => $this->_getSimpleVersion($bugReport['php_version'], 2),
            'browser' => $bugReport['browser_name'] . ' '
                    . $this->_getSimpleVersion($bugReport['browser_version'], 1),
            'user_os' => $bugReport['user_os'],
            'locale' => $bugReport['locale'],
            'configuration_storage' => $bugReport['configuration_storage'],
            'server_software' => $this->_getServer($bugReport['server_software']),
            'full_report' => json_encode($bugReport),
        );

        if (isset($bugReport['exception_type'])
            && $bugReport['exception_type'] == 'php'
        ) {
            // for each "errors"
            foreach ($bugReport['errors'] as $error) {
                $tmpReport = array_merge(
                    $schematizedCommonReport,
                    array(
                        'error_name' => $error['type'],
                        'error_message' => $error['msg'],
                        'script_name' => $error['file'],
                        'stacktrace' => json_encode($error['stackTrace']),
                        'stackhash' => $error['stackhash'],
                        'exception_type' => 1,         // 'php'
                    )
                );
                array_push($schematizedReports, $tmpReport);
            }
        } else {
            $tmpReport = array_merge(
                $schematizedCommonReport,
                array(
                    'error_name' => $bugReport['exception']['name'],
                    'error_message' => $bugReport['exception']['message'],
                    'script_name' => $bugReport['script_name'],
                    'stacktrace' => json_encode($bugReport['exception']['stack']),
                    'stackhash' => $this->getStackHash($bugReport['exception']['stack']),
                    'exception_type' => 0,     //'js'
                )
            );

            if (isset($bugReport['steps'])) {
                $tmpReport['steps'] = $bugReport['steps'];
            }
            array_push($schematizedReports, $tmpReport);
        }

        return $schematizedReports;
    }

    /**
     * Gets the identifiying location info from a stacktrace.
     *
     * This is used to skip stacktrace levels that are within the error reporting js
     * files that sometimes appear in the stacktrace but are not related to the bug
     * report
     *
     * returns two things in an array:
     * - the first element is the filename/scriptname of the error
     * - the second element is the linenumber of the error
     *
     * @param array $stacktrace the stacktrace being examined
     *
     * @return array an array with the filename/scriptname and linenumber of the
     *               error
     */
    protected function _getIdentifyingLocation($stacktrace)
    {
        $fallback = array('UNKNOWN', 0);
        foreach ($stacktrace as $level) {
            if (isset($level['filename'])) {
                // ignore unrelated files that sometimes appear in the error report
                if ($level['filename'] === 'tracekit/tracekit.js') {
                    continue;
                } elseif ($level['filename'] === 'error_report.js') {
                    // in case the error really is in the error_report.js file save it for
                    // later
                    if ($fallback[0] == 'UNKNOWN') {
                        $fallback = array($level['filename'], $level['line']);
                    }
                    continue;
                }

                return array($level['filename'], $level['line']);
            } elseif (isset($level['scriptname'])) {
                return array($level['scriptname'], $level['line']);
            }
            continue;
        }

        return $fallback;
    }

    /**
     * Gets a part of a version string according to the specified version Length.
     *
     * @param string $versionString the version string
     * @param string $versionLength the number of version components to return. eg
     *                              1 for major version only and 2 for major and
     *                              minor version
     *
     * @return string the major and minor version part
     */
    protected function _getSimpleVersion($versionString, $versionLength)
    {
        $versionLength = (int) $versionLength;
        if ($versionLength < 1) {
            $versionLength = 1;
        }
        /* modify the re to accept a variable number of version components. I
         * atleast take one component and optionally get more components if need be.
         * previous code makes sure that the $versionLength variable is a positive
         * int
         */
        $result = preg_match(
            "/^(\d+\.){" . ($versionLength - 1) . "}\d+/",
            $versionString,
            $matches
        );
        if ($result) {
            $simpleVersion = $matches[0];

            return $simpleVersion;
        }

        return $versionString;
    }

    /**
     * Returns the version string stripped of
     * 'deb', 'ubuntu' and other suffixes
     *
     * @param string $versionString phpMyAdmin version
     *
     * @return string stripped phpMyAdmin version
     */
    public function getStrippedPmaVersion($versionString)
    {
        $allowedRegexp = '/^(\d+)(\.\d+){0,3}(\-.*)?/';
        $matches = array();

        // Check if $versionString matches the regexp
        // and store the matched strings
        if (preg_match($allowedRegexp, $versionString, $matches)) {
            return $matches[0];
        }

        // If $versionString does not match the regexp at all,
        // leave it as it is
        return $versionString;
    }

    /**
     * Gets the server name and version from the server signature.
     *
     * @param string $signature the server signature
     *
     * @return string the server name and version or UNKNOWN
     */
    protected function _getServer($signature)
    {
        if (preg_match("/(apache\/\d+\.\d+)|(nginx\/\d+\.\d+)|(iis\/\d+\.\d+)"
                . "|(lighttpd\/\d+\.\d+)/i",
                $signature, $matches)) {
            return $matches[0];
        }

        return 'UNKNOWN';
    }

    /**
     * returns the hash pertaining to a stacktrace.
     *
     * @param array $stacktrace the stacktrace in question
     *
     * @return string the hash string of the stacktrace
     */
    public function getStackHash($stacktrace)
    {
        $handle = hash_init('md5');
        foreach ($stacktrace as $level) {
            $elements = array('filename', 'scriptname', 'line', 'func', 'column');
            foreach ($elements as $element) {
                if (!isset($level[$element])) {
                    continue;
                }
                hash_update($handle, $level[$element]);
            }
        }

        return hash_final($handle);
    }

    /**
     * Checks the length of stacktrace and full_report
     * and logs if it is greater than what it can hold
     *
     * @param array $si           submitted incident
     * @param array $incident_ids incident IDs
     *
     * @return array $incident_ids
     */
    private function _logLongIncidentSubmissions($si, &$incident_ids) {

        $stacktraceLength = mb_strlen($si['stacktrace']);
        $fullReportLength = mb_strlen($si['full_report']);
        $errorMessageLength = mb_strlen($si['error_message']);

        if ($stacktraceLength > 65535
            || $fullReportLength > 65535
            || $errorMessageLength > 200 // length of field in 'incidents' table
        ) {
            // If length of report is longer than
            // what can fit in the table field,
            // we log it and don't save it in the database
            Log::error(
                'Too long data submitted in the incident. The length of stacktrace: '
                . $stacktraceLength . ', the length of bug report: '
                . $fullReportLength . ', the length of error message: '
                . $errorMessageLength . '. The full incident reported was as follows: '
                . json_encode($si)
            );

            // add a 'false' to the return array
            array_push($incident_ids, false);
        }
    }
}

Push — master ( 7f3e63...891bdf )

IncidentsTable::getStackHash() A

Complexity

Size

Duplication

Code Coverage

Importance

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

phpmyadmin / error-reporting-server

Push — master ( 7f3e63...891bdf )

IncidentsTable::getStackHash() A

Complexity

Size

Duplication

Code Coverage

Importance

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

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