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<?php
/**
* Whoops - php errors for cool kids
* @author Filipe Dobreira <http://github.com/filp>
*/
namespace Whoops\Handler;
use InvalidArgumentException;
use RuntimeException;
use Symfony\Component\VarDumper\Cloner\AbstractCloner;
use Symfony\Component\VarDumper\Cloner\VarCloner;
use UnexpectedValueException;
use Whoops\Exception\Formatter;
use Whoops\Util\Misc;
use Whoops\Util\TemplateHelper;
class PrettyPageHandler extends Handler
{
const EDITOR_SUBLIME = "sublime";
const EDITOR_TEXTMATE = "textmate";
const EDITOR_EMACS = "emacs";
const EDITOR_MACVIM = "macvim";
const EDITOR_PHPSTORM = "phpstorm";
const EDITOR_IDEA = "idea";
const EDITOR_VSCODE = "vscode";
const EDITOR_ATOM = "atom";
const EDITOR_ESPRESSO = "espresso";
const EDITOR_XDEBUG = "xdebug";
const EDITOR_NETBEANS = "netbeans";
/**
* Search paths to be scanned for resources.
*
* Stored in the reverse order they're declared.
*
* @var array
*/
private $searchPaths = [];
/**
* Fast lookup cache for known resource locations.
*
* @var array
*/
private $resourceCache = [];
/**
* The name of the custom css file.
*
* @var string|null
*/
private $customCss = null;
/**
* The name of the custom js file.
*
* @var string|null
*/
private $customJs = null;
/**
* @var array[]
*/
private $extraTables = [];
/**
* @var bool
*/
private $handleUnconditionally = false;
/**
* @var string
*/
private $pageTitle = "Whoops! There was an error.";
/**
* @var array[]
*/
private $applicationPaths;
/**
* @var array[]
*/
private $blacklist = [
'_GET' => [],
'_POST' => [],
'_FILES' => [],
'_COOKIE' => [],
'_SESSION' => [],
'_SERVER' => [],
'_ENV' => [],
];
/**
* An identifier for a known IDE/text editor.
*
* Either a string, or a calalble that resolves a string, that can be used
* to open a given file in an editor. If the string contains the special
* substrings %file or %line, they will be replaced with the correct data.
*
* @example
* "txmt://open?url=%file&line=%line"
*
* @var callable|string $editor
*/
protected $editor;
/**
* A list of known editor strings.
*
* @var array
*/
protected $editors = [
"sublime" => "subl://open?url=file://%file&line=%line",
"textmate" => "txmt://open?url=file://%file&line=%line",
"emacs" => "emacs://open?url=file://%file&line=%line",
"macvim" => "mvim://open/?url=file://%file&line=%line",
"phpstorm" => "phpstorm://open?file=%file&line=%line",
"idea" => "idea://open?file=%file&line=%line",
"vscode" => "vscode://file/%file:%line",
"atom" => "atom://core/open/file?filename=%file&line=%line",
"espresso" => "x-espresso://open?filepath=%file&lines=%line",
"netbeans" => "netbeans://open/?f=%file:%line",
];
/**
* @var TemplateHelper
*/
protected $templateHelper;
/**
* Constructor.
*
* @return void
*/
public function __construct()
{
if (ini_get('xdebug.file_link_format') || extension_loaded('xdebug')) {
// Register editor using xdebug's file_link_format option.
$this->editors['xdebug'] = function ($file, $line) {
return str_replace(['%f', '%l'], [$file, $line], ini_get('xdebug.file_link_format'));
};
// If xdebug is available, use it as default editor.
$this->setEditor('xdebug');
}
// Add the default, local resource search path:
$this->searchPaths[] = __DIR__ . "/../Resources";
// blacklist php provided auth based values
$this->blacklist('_SERVER', 'PHP_AUTH_PW');
$this->templateHelper = new TemplateHelper();
if (class_exists('Symfony\Component\VarDumper\Cloner\VarCloner')) {
$cloner = new VarCloner();
// Only dump object internals if a custom caster exists for performance reasons
// https://github.com/filp/whoops/pull/404
$cloner->addCasters(['*' => function ($obj, $a, $stub, $isNested, $filter = 0) {
$class = $stub->class;
$classes = [$class => $class] + class_parents($obj) + class_implements($obj);
foreach ($classes as $class) {
if (isset(AbstractCloner::$defaultCasters[$class])) {
return $a;
}
}
// Remove all internals
return [];
}]);
$this->templateHelper->setCloner($cloner);
}
}
/**
* @return int|null
*
* @throws \Exception
*/
public function handle()
{
if (!$this->handleUnconditionally()) {
// Check conditions for outputting HTML:
// @todo: Make this more robust
if (PHP_SAPI === 'cli') {
// Help users who have been relying on an internal test value
// fix their code to the proper method
if (isset($_ENV['whoops-test'])) {
throw new \Exception(
'Use handleUnconditionally instead of whoops-test'
.' environment variable'
);
}
return Handler::DONE;
}
}
$templateFile = $this->getResource("views/layout.html.php");
$cssFile = $this->getResource("css/whoops.base.css");
$zeptoFile = $this->getResource("js/zepto.min.js");
$prettifyFile = $this->getResource("js/prettify.min.js");
$clipboard = $this->getResource("js/clipboard.min.js");
$jsFile = $this->getResource("js/whoops.base.js");
if ($this->customCss) {
$customCssFile = $this->getResource($this->customCss);
}
if ($this->customJs) {
$customJsFile = $this->getResource($this->customJs);
}
$inspector = $this->getInspector();
$frames = $this->getExceptionFrames();
$code = $this->getExceptionCode();
// List of variables that will be passed to the layout template.
$vars = [
"page_title" => $this->getPageTitle(),
// @todo: Asset compiler
"stylesheet" => file_get_contents($cssFile),
"zepto" => file_get_contents($zeptoFile),
"prettify" => file_get_contents($prettifyFile),
"clipboard" => file_get_contents($clipboard),
"javascript" => file_get_contents($jsFile),
// Template paths:
"header" => $this->getResource("views/header.html.php"),
"header_outer" => $this->getResource("views/header_outer.html.php"),
"frame_list" => $this->getResource("views/frame_list.html.php"),
"frames_description" => $this->getResource("views/frames_description.html.php"),
"frames_container" => $this->getResource("views/frames_container.html.php"),
"panel_details" => $this->getResource("views/panel_details.html.php"),
"panel_details_outer" => $this->getResource("views/panel_details_outer.html.php"),
"panel_left" => $this->getResource("views/panel_left.html.php"),
"panel_left_outer" => $this->getResource("views/panel_left_outer.html.php"),
"frame_code" => $this->getResource("views/frame_code.html.php"),
"env_details" => $this->getResource("views/env_details.html.php"),
"title" => $this->getPageTitle(),
"name" => explode("\\", $inspector->getExceptionName()),
"message" => $inspector->getExceptionMessage(),
"previousMessages" => $inspector->getPreviousExceptionMessages(),
"docref_url" => $inspector->getExceptionDocrefUrl(),
"code" => $code,
"previousCodes" => $inspector->getPreviousExceptionCodes(),
"plain_exception" => Formatter::formatExceptionPlain($inspector),
"frames" => $frames,
"has_frames" => !!count($frames),
"handler" => $this,
"handlers" => $this->getRun()->getHandlers(),
"active_frames_tab" => count($frames) && $frames->offsetGet(0)->isApplication() ? 'application' : 'all',
"has_frames_tabs" => $this->getApplicationPaths(),
"tables" => [
"GET Data" => $this->masked($_GET, '_GET'),
"POST Data" => $this->masked($_POST, '_POST'),
"Files" => isset($_FILES) ? $this->masked($_FILES, '_FILES') : [],
"Cookies" => $this->masked($_COOKIE, '_COOKIE'),
"Session" => isset($_SESSION) ? $this->masked($_SESSION, '_SESSION') : [],
"Server/Request Data" => $this->masked($_SERVER, '_SERVER'),
"Environment Variables" => $this->masked($_ENV, '_ENV'),
],
];
if (isset($customCssFile)) {
$vars["stylesheet"] .= file_get_contents($customCssFile);
}
if (isset($customJsFile)) {
$vars["javascript"] .= file_get_contents($customJsFile);
}
// Add extra entries list of data tables:
// @todo: Consolidate addDataTable and addDataTableCallback
$extraTables = array_map(function ($table) use ($inspector) {
return $table instanceof \Closure ? $table($inspector) : $table;
}, $this->getDataTables());
$vars["tables"] = array_merge($extraTables, $vars["tables"]);
$plainTextHandler = new PlainTextHandler();
$plainTextHandler->setException($this->getException());
$plainTextHandler->setInspector($this->getInspector());
$vars["preface"] = "<!--\n\n\n" . $this->templateHelper->escape($plainTextHandler->generateResponse()) . "\n\n\n\n\n\n\n\n\n\n\n-->";
$this->templateHelper->setVariables($vars);
$this->templateHelper->render($templateFile);
return Handler::QUIT;
}
/**
* Get the stack trace frames of the exception currently being handled.
*
* @return \Whoops\Exception\FrameCollection
*/
protected function getExceptionFrames()
{
$frames = $this->getInspector()->getFrames();
if ($this->getApplicationPaths()) {
foreach ($frames as $frame) {
foreach ($this->getApplicationPaths() as $path) {
if (strpos($frame->getFile(), $path) === 0) {
$frame->setApplication(true);
break;
}
}
}
}
return $frames;
}
/**
* Get the code of the exception currently being handled.
*
* @return string
*/
protected function getExceptionCode()
{
$exception = $this->getException();
$code = $exception->getCode();
if ($exception instanceof \ErrorException) {
// ErrorExceptions wrap the php-error types within the 'severity' property
$code = Misc::translateErrorCode($exception->getSeverity());
}
return (string) $code;
}
/**
* @return string
*/
public function contentType()
{
return 'text/html';
}
/**
* Adds an entry to the list of tables displayed in the template.
*
* The expected data is a simple associative array. Any nested arrays
* will be flattened with `print_r`.
*
* @param string $label
* @param array $data
*
* @return static
*/
public function addDataTable($label, array $data)
{
$this->extraTables[$label] = $data;
return $this;
}
/**
* Lazily adds an entry to the list of tables displayed in the table.
*
* The supplied callback argument will be called when the error is
* rendered, it should produce a simple associative array. Any nested
* arrays will be flattened with `print_r`.
*
* @param string $label
* @param callable $callback Callable returning an associative array
*
* @throws InvalidArgumentException If $callback is not callable
*
* @return static
*/
public function addDataTableCallback($label, /* callable */ $callback)
{
if (!is_callable($callback)) {
throw new InvalidArgumentException('Expecting callback argument to be callable');
}
$this->extraTables[$label] = function (\Whoops\Exception\Inspector $inspector = null) use ($callback) {
try {
$result = call_user_func($callback, $inspector);
// Only return the result if it can be iterated over by foreach().
return is_array($result) || $result instanceof \Traversable ? $result : [];
} catch (\Exception $e) {
// Don't allow failure to break the rendering of the original exception.
return [];
}
};
return $this;
}
/**
* Returns all the extra data tables registered with this handler.
*
* Optionally accepts a 'label' parameter, to only return the data table
* under that label.
*
* @param string|null $label
*
* @return array[]|callable
*/
public function getDataTables($label = null)
{
if ($label !== null) {
return isset($this->extraTables[$label]) ?
$this->extraTables[$label] : [];
}
return $this->extraTables;
}
/**
* Set whether to handle unconditionally.
*
* Allows to disable all attempts to dynamically decide whether to handle
* or return prematurely. Set this to ensure that the handler will perform,
* no matter what.
*
* @param bool|null $value
*
* @return bool|static
*/
public function handleUnconditionally($value = null)
{
if (func_num_args() == 0) {
return $this->handleUnconditionally;
}
$this->handleUnconditionally = (bool) $value;
return $this;
}
/**
* Adds an editor resolver.
*
* Either a string, or a closure that resolves a string, that can be used
* to open a given file in an editor. If the string contains the special
* substrings %file or %line, they will be replaced with the correct data.
*
* @example
* $run->addEditor('macvim', "mvim://open?url=file://%file&line=%line")
* @example
* $run->addEditor('remove-it', function($file, $line) {
* unlink($file);
* return "http://stackoverflow.com";
* });
*
* @param string $identifier
* @param string|callable $resolver
*
* @return static
*/
public function addEditor($identifier, $resolver)
{
$this->editors[$identifier] = $resolver;
return $this;
}
/**
* Set the editor to use to open referenced files.
*
* Pass either the name of a configured editor, or a closure that directly
* resolves an editor string.
*
* @example
* $run->setEditor(function($file, $line) { return "file:///{$file}"; });
* @example
* $run->setEditor('sublime');
*
* @param string|callable $editor
*
* @throws InvalidArgumentException If invalid argument identifier provided
*
* @return static
*/
public function setEditor($editor)
{
if (!is_callable($editor) && !isset($this->editors[$editor])) {
throw new InvalidArgumentException(
"Unknown editor identifier: $editor. Known editors:" .
implode(",", array_keys($this->editors))
);
}
$this->editor = $editor;
return $this;
}
/**
* Get the editor href for a given file and line, if available.
*
* @param string $filePath
* @param int $line
*
* @throws InvalidArgumentException If editor resolver does not return a string
*
* @return string|bool
*/
public function getEditorHref($filePath, $line)
{
$editor = $this->getEditor($filePath, $line);
if (empty($editor)) {
return false;
}
// Check that the editor is a string, and replace the
// %line and %file placeholders:
if (!isset($editor['url']) || !is_string($editor['url'])) {
throw new UnexpectedValueException(
__METHOD__ . " should always resolve to a string or a valid editor array; got something else instead."
);
}
$editor['url'] = str_replace("%line", rawurlencode($line), $editor['url']);
$editor['url'] = str_replace("%file", rawurlencode($filePath), $editor['url']);
return $editor['url'];
}
/**
* Determine if the editor link should act as an Ajax request.
*
* @param string $filePath
* @param int $line
*
* @throws UnexpectedValueException If editor resolver does not return a boolean
*
* @return bool
*/
public function getEditorAjax($filePath, $line)
{
$editor = $this->getEditor($filePath, $line);
// Check that the ajax is a bool
if (!isset($editor['ajax']) || !is_bool($editor['ajax'])) {
throw new UnexpectedValueException(
__METHOD__ . " should always resolve to a bool; got something else instead."
);
}
return $editor['ajax'];
}
/**
* Determines both the editor and if ajax should be used.
*
* @param string $filePath
* @param int $line
*
* @return array
*/
protected function getEditor($filePath, $line)
{
if (!$this->editor || (!is_string($this->editor) && !is_callable($this->editor))) {
return [];
}
if (is_string($this->editor) && isset($this->editors[$this->editor]) && !is_callable($this->editors[$this->editor])) {
return [
'ajax' => false,
'url' => $this->editors[$this->editor],
];
}
if (is_callable($this->editor) || (isset($this->editors[$this->editor]) && is_callable($this->editors[$this->editor]))) {
if (is_callable($this->editor)) {
$callback = call_user_func($this->editor, $filePath, $line);
} else {
$callback = call_user_func($this->editors[$this->editor], $filePath, $line);
}
if (empty($callback)) {
return [];
}
if (is_string($callback)) {
return [
'ajax' => false,
'url' => $callback,
];
}
return [
'ajax' => isset($callback['ajax']) ? $callback['ajax'] : false,
'url' => isset($callback['url']) ? $callback['url'] : $callback,
];
}
return [];
}
/**
* Set the page title.
*
* @param string $title
*
* @return static
*/
public function setPageTitle($title)
{
$this->pageTitle = (string) $title;
return $this;
}
/**
* Get the page title.
*
* @return string
*/
public function getPageTitle()
{
return $this->pageTitle;
}
/**
* Adds a path to the list of paths to be searched for resources.
*
* @param string $path
*
* @throws InvalidArgumentException If $path is not a valid directory
*
* @return static
*/
public function addResourcePath($path)
{
if (!is_dir($path)) {
throw new InvalidArgumentException(
"'$path' is not a valid directory"
);
}
array_unshift($this->searchPaths, $path);
return $this;
}
/**
* Adds a custom css file to be loaded.
*
* @param string|null $name
*
* @return static
*/
public function addCustomCss($name)
{
$this->customCss = $name;
return $this;
}
/**
* Adds a custom js file to be loaded.
*
* @param string|null $name
*
* @return static
*/
public function addCustomJs($name)
{
$this->customJs = $name;
return $this;
}
/**
* @return array
*/
public function getResourcePaths()
{
return $this->searchPaths;
}
/**
* Finds a resource, by its relative path, in all available search paths.
*
* The search is performed starting at the last search path, and all the
* way back to the first, enabling a cascading-type system of overrides for
* all resources.
*
* @param string $resource
*
* @throws RuntimeException If resource cannot be found in any of the available paths
*
* @return string
*/
protected function getResource($resource)
{
// If the resource was found before, we can speed things up
// by caching its absolute, resolved path:
if (isset($this->resourceCache[$resource])) {
return $this->resourceCache[$resource];
}
// Search through available search paths, until we find the
// resource we're after:
foreach ($this->searchPaths as $path) {
$fullPath = $path . "/$resource";
if (is_file($fullPath)) {
// Cache the result:
$this->resourceCache[$resource] = $fullPath;
return $fullPath;
}
}
// If we got this far, nothing was found.
throw new RuntimeException(
"Could not find resource '$resource' in any resource paths."
. "(searched: " . join(", ", $this->searchPaths). ")"
);
}
/**
* @deprecated
*
* @return string
*/
public function getResourcesPath()
{
$allPaths = $this->getResourcePaths();
// Compat: return only the first path added
return end($allPaths) ?: null;
}
/**
* @deprecated
*
* @param string $resourcesPath
*
* @return static
*/
public function setResourcesPath($resourcesPath)
{
$this->addResourcePath($resourcesPath);
return $this;
}
/**
* Return the application paths.
*
* @return array
*/
public function getApplicationPaths()
{
return $this->applicationPaths;
}
/**
* Set the application paths.
*
* @param array $applicationPaths
*
* @return void
*/
public function setApplicationPaths($applicationPaths)
{
$this->applicationPaths = $applicationPaths;
}
/**
* Set the application root path.
*
* @param string $applicationRootPath
*
* @return void
*/
public function setApplicationRootPath($applicationRootPath)
{
$this->templateHelper->setApplicationRootPath($applicationRootPath);
}
/**
* blacklist a sensitive value within one of the superglobal arrays.
* Alias for the hideSuperglobalKey method.
*
* @param string $superGlobalName The name of the superglobal array, e.g. '_GET'
* @param string $key The key within the superglobal
* @see hideSuperglobalKey
*
* @return static
*/
public function blacklist($superGlobalName, $key)
{
$this->blacklist[$superGlobalName][] = $key;
return $this;
}
/**
* Hide a sensitive value within one of the superglobal arrays.
*
* @param string $superGlobalName The name of the superglobal array, e.g. '_GET'
* @param string $key The key within the superglobal
* @return static
*/
public function hideSuperglobalKey($superGlobalName, $key)
{
return $this->blacklist($superGlobalName, $key);
}
/**
* Checks all values within the given superGlobal array.
*
* Blacklisted values will be replaced by a equal length string containing
* only '*' characters for string values.
* Non-string values will be replaced with a fixed asterisk count.
* We intentionally dont rely on $GLOBALS as it depends on the 'auto_globals_jit' php.ini setting.
*
* @param array $superGlobal One of the superglobal arrays
* @param string $superGlobalName The name of the superglobal array, e.g. '_GET'
*
* @return array $values without sensitive data
*/
private function masked(array $superGlobal, $superGlobalName)
{
$blacklisted = $this->blacklist[$superGlobalName];
$values = $superGlobal;
foreach ($blacklisted as $key) {
if (isset($superGlobal[$key])) {
$values[$key] = str_repeat('*', is_string($superGlobal[$key]) ? strlen($superGlobal[$key]) : 3);
}
}
return $values;
}
}