<?php
/**
* CodeIgniter
*
* An open source application development framework for PHP
*
* This content is released under the MIT License (MIT)
*
* Copyright (c) 2014-2019 British Columbia Institute of Technology
* Copyright (c) 2019-2020 CodeIgniter Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @package CodeIgniter
* @author CodeIgniter Dev Team
* @copyright 2019-2020 CodeIgniter Foundation
* @license https://opensource.org/licenses/MIT MIT License
* @link https://codeigniter.com
* @since Version 4.0.0
* @filesource
*/
namespace CodeIgniter\Debug;
use CodeIgniter\Config\BaseConfig;
use CodeIgniter\Debug\Toolbar\Collectors\History;
use CodeIgniter\Format\JSONFormatter;
use CodeIgniter\Format\XMLFormatter;
use CodeIgniter\HTTP\DownloadResponse;
use CodeIgniter\HTTP\RequestInterface;
use CodeIgniter\HTTP\ResponseInterface;
use Config\Services;
/**
* Debug Toolbar
*
* Displays a toolbar with bits of stats to aid a developer in debugging.
*
* Inspiration: http://prophiler.fabfuel.de
*
* @package CodeIgniter\Debug
*/
class Toolbar
{
/**
* Toolbar configuration settings.
*
* @var BaseConfig
*/
protected $config;
/**
* Collectors to be used and displayed.
*
* @var \CodeIgniter\Debug\Toolbar\Collectors\BaseCollector[]
*/
protected $collectors = [];
//--------------------------------------------------------------------
/**
* Constructor
*
* @param BaseConfig $config
*/
public function __construct(BaseConfig $config)
{
$this->config = $config;
foreach ($config->collectors as $collector)
{
if (! class_exists($collector))
{
log_message('critical', 'Toolbar collector does not exists(' . $collector . ').' .
'please check $collectors in the Config\Toolbar.php file.');
continue;
}
$this->collectors[] = new $collector();
}
}
//--------------------------------------------------------------------
/**
* Returns all the data required by Debug Bar
*
* @param float $startTime App start time
* @param float $totalTime
* @param \CodeIgniter\HTTP\RequestInterface $request
* @param \CodeIgniter\HTTP\ResponseInterface $response
*
* @return string JSON encoded data
*/
public function run(float $startTime, float $totalTime, RequestInterface $request, ResponseInterface $response): string
{
// Data items used within the view.
$data['url'] = current_url();
$data['method'] = $request->getMethod(true);
$data['isAJAX'] = $request->isAJAX();
$data['startTime'] = $startTime;
$data['totalTime'] = $totalTime * 1000;
$data['totalMemory'] = number_format((memory_get_peak_usage()) / 1024 / 1024, 3);
$data['segmentDuration'] = $this->roundTo($data['totalTime'] / 7);
$data['segmentCount'] = (int) ceil($data['totalTime'] / $data['segmentDuration']);
$data['CI_VERSION'] = \CodeIgniter\CodeIgniter::CI_VERSION;
$data['collectors'] = [];
foreach ($this->collectors as $collector)
{
$data['collectors'][] = $collector->getAsArray();
}
foreach ($this->collectVarData() as $heading => $items)
{
$varData = [];
if (is_array($items))
{
foreach ($items as $key => $value)
{
$varData[esc($key)] = is_string($value) ? esc($value) : '<pre>' . esc(print_r($value, true)) . '</pre>';
}
}
$data['vars']['varData'][esc($heading)] = $varData;
}
if (! empty($_SESSION))
{
foreach ($_SESSION as $key => $value)
{
// Replace the binary data with string to avoid json_encode failure.
if (is_string($value) && preg_match('~[^\x20-\x7E\t\r\n]~', $value))
{
$value = 'binary data';
}
$data['vars']['session'][esc($key)] = is_string($value) ? esc($value) : '<pre>' . esc(print_r($value, true)) . '</pre>';
}
}
foreach ($request->getGet() as $name => $value)
{
$data['vars']['get'][esc($name)] = is_array($value) ? '<pre>' . esc(print_r($value, true)) . '</pre>' : esc($value);
}
foreach ($request->getPost() as $name => $value)
{
$data['vars']['post'][esc($name)] = is_array($value) ? '<pre>' . esc(print_r($value, true)) . '</pre>' : esc($value);
}
foreach ($request->getHeaders() as $value)
{
if (empty($value))
{
continue;
}
if (! is_array($value))
{
$value = [$value];
}
foreach ($value as $h)
{
$data['vars']['headers'][esc($h->getName())] = esc($h->getValueLine());
}
}
foreach ($request->getCookie() as $name => $value)
{
$data['vars']['cookies'][esc($name)] = esc($value);
}
$data['vars']['request'] = ($request->isSecure() ? 'HTTPS' : 'HTTP') . '/' . $request->getProtocolVersion();
$data['vars']['response'] = [
'statusCode' => $response->getStatusCode(),
'reason' => esc($response->getReason()),
'contentType' => esc($response->getHeaderLine('content-type')),
];
$data['config'] = \CodeIgniter\Debug\Toolbar\Collectors\Config::display();
if ($response->CSP !== null)
{
$response->CSP->addImageSrc('data:');
}
return json_encode($data);
}
//--------------------------------------------------------------------
//--------------------------------------------------------------------
/**
* Called within the view to display the timeline itself.
*
* @param array $collectors
* @param float $startTime
* @param integer $segmentCount
* @param integer $segmentDuration
* @param array $styles
*
* @return string
*/
protected function renderTimeline(array $collectors, float $startTime, int $segmentCount, int $segmentDuration, array &$styles): string
{
$displayTime = $segmentCount * $segmentDuration;
$rows = $this->collectTimelineData($collectors);
$output = '';
$styleCount = 0;
foreach ($rows as $row)
{
$output .= '<tr>';
$output .= "<td>{$row['name']}</td>";
$output .= "<td>{$row['component']}</td>";
$output .= "<td class='debug-bar-alignRight'>" . number_format($row['duration'] * 1000, 2) . ' ms</td>';
$output .= "<td class='debug-bar-noverflow' colspan='{$segmentCount}'>";
$offset = ((((float) $row['start'] - $startTime) * 1000) / $displayTime) * 100;
$length = (((float) $row['duration'] * 1000) / $displayTime) * 100;
$styles['debug-bar-timeline-' . $styleCount] = "left: {$offset}%; width: {$length}%;";
$output .= "<span class='timer debug-bar-timeline-{$styleCount}' title='" . number_format($length, 2) . "%'></span>";
$output .= '</td>';
$output .= '</tr>';
$styleCount ++;
}
return $output;
}
//--------------------------------------------------------------------
/**
* Returns a sorted array of timeline data arrays from the collectors.
*
* @param array $collectors
*
* @return array
*/
protected function collectTimelineData($collectors): array
{
$data = [];
// Collect it
foreach ($collectors as $collector)
{
if (! $collector['hasTimelineData'])
{
continue;
}
$data = array_merge($data, $collector['timelineData']);
}
// Sort it
return $data;
}
//--------------------------------------------------------------------
/**
* Returns an array of data from all of the modules
* that should be displayed in the 'Vars' tab.
*
* @return array
*/
protected function collectVarData(): array
{
$data = [];
foreach ($this->collectors as $collector)
{
if (! $collector->hasVarData())
{
continue;
}
$data = array_merge($data, $collector->getVarData());
}
return $data;
}
//--------------------------------------------------------------------
/**
* Rounds a number to the nearest incremental value.
*
* @param float $number
* @param integer $increments
*
* @return float
*/
protected function roundTo(float $number, int $increments = 5): float
{
$increments = 1 / $increments;
return (ceil($number * $increments) / $increments);
}
//--------------------------------------------------------------------
/**
* Prepare for debugging..
*
* @param RequestInterface $request
* @param ResponseInterface $response
* @global type $app
* @return type
*/
public function prepare(RequestInterface $request = null, ResponseInterface $response = null)
{
if (CI_DEBUG && ! is_cli())
{
global $app;
$request = $request ?? Services::request();
$response = $response ?? Services::response();
// Disable the toolbar for downloads
if ($response instanceof DownloadResponse)
{
return;
}
$toolbar = Services::toolbar(config(Toolbar::class));
$stats = $app->getPerformanceStats();
$data = $toolbar->run(
$stats['startTime'],
$stats['totalTime'],
$request,
$response
);
helper('filesystem');
// Updated to time() so we can get history
$time = time();
if (! is_dir(WRITEPATH . 'debugbar'))
{
mkdir(WRITEPATH . 'debugbar', 0777);
}
write_file(WRITEPATH . 'debugbar/' . 'debugbar_' . $time . '.json', $data, 'w+');
$format = $response->getHeaderLine('content-type');
// Non-HTML formats should not include the debugbar
// then we send headers saying where to find the debug data
// for this response
if ($request->isAJAX() || strpos($format, 'html') === false)
{
$response->setHeader('Debugbar-Time', "$time")
->setHeader('Debugbar-Link', site_url("?debugbar_time={$time}"))
->getBody();
return;
}
$script = PHP_EOL
. '<script type="text/javascript" {csp-script-nonce} id="debugbar_loader" '
. 'data-time="' . $time . '" '
. 'src="' . site_url() . '?debugbar"></script>'
. '<script type="text/javascript" {csp-script-nonce} id="debugbar_dynamic_script"></script>'
. '<style type="text/css" {csp-style-nonce} id="debugbar_dynamic_style"></style>'
. PHP_EOL;
if (strpos($response->getBody(), '<head>') !== false)
{
$response->setBody(
str_replace('<head>', '<head>' . $script, $response->getBody())
);
return;
}
$response->appendBody($script);
}
}
//--------------------------------------------------------------------
/**
* Inject debug toolbar into the response.
*/
public function respond()
{
if (ENVIRONMENT === 'testing')
{
return;
}
// @codeCoverageIgnoreStart
$request = Services::request();
// If the request contains '?debugbar then we're
// simply returning the loading script
if ($request->getGet('debugbar') !== null)
{
// Let the browser know that we are sending javascript
header('Content-Type: application/javascript');
ob_start();
include($this->config->viewsPath . 'toolbarloader.js.php');
$output = ob_get_clean();
exit($output);
}
// Otherwise, if it includes ?debugbar_time, then
// we should return the entire debugbar.
if ($request->getGet('debugbar_time'))
{
helper('security');
// Negotiate the content-type to format the output
$format = $request->negotiate('media', [
'text/html',
'application/json',
'application/xml',
]);
$format = explode('/', $format)[1];
$file = sanitize_filename('debugbar_' . $request->getGet('debugbar_time'));
$filename = WRITEPATH . 'debugbar/' . $file . '.json';
// Show the toolbar
if (is_file($filename))
{
$contents = $this->format(file_get_contents($filename), $format);
exit($contents);
}
// File was not written or do not exists
http_response_code(404);
exit; // Exit here is needed to avoid load the index page
}
// @codeCoverageIgnoreEnd
}
/**
* Format output
*
* @param string $data JSON encoded Toolbar data
* @param string $format html, json, xml
*
* @return string
*/
protected function format(string $data, string $format = 'html'): string
{
$data = json_decode($data, true);
if ($this->config->maxHistory !== 0)
{
$history = new History();
$history->setFiles(
Services::request()->getGet('debugbar_time'),
$this->config->maxHistory
);
$data['collectors'][] = $history->getAsArray();
}
$output = '';
switch ($format)
{
case 'html':
$data['styles'] = [];
extract($data);
$parser = Services::parser($this->config->viewsPath, null, false);
ob_start();
include($this->config->viewsPath . 'toolbar.tpl.php');
$output = ob_get_clean();
break;
case 'json':
$formatter = new JSONFormatter();
$output = $formatter->format($data);
break;
case 'xml':
$formatter = new XMLFormatter;
$output = $formatter->format($data);
break;
}
return $output;
}
}
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