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Edit File : TraceMiddleware.php \| Size : 10.72 KB
<?php namespace Aws; use Aws\Exception\AwsException; use GuzzleHttp\Promise\RejectedPromise; use Psr\Http\Message\RequestInterface; use Psr\Http\Message\ResponseInterface; use Psr\Http\Message\StreamInterface; /** * Traces state changes between middlewares. / class TraceMiddleware { private $prevOutput; private $prevInput; private $config; private static $authHeaders = [ 'X-Amz-Security-Token' => '[TOKEN]', ]; private static $authStrings = [ // S3Signature '/AWSAccessKeyId=[A-Z0-9]{20}&/i' => 'AWSAccessKeyId=[KEY]&', // SignatureV4 Signature and S3Signature '/Signature=.+/i' => 'Signature=[SIGNATURE]', // SignatureV4 access key ID '/Credential=[A-Z0-9]{20}\//i' => 'Credential=[KEY]/', // S3 signatures '/AWS [A-Z0-9]{20}:.+/' => 'AWS AKI[KEY]:[SIGNATURE]', // STS Presigned URLs '/X-Amz-Security-Token=[^&]+/i' => 'X-Amz-Security-Token=[TOKEN]', // Crypto Stream Keys '/\["key.{27,36}Stream.{9}\]=>\s+.{7}\d{2}\) "\X{16,64}"/U' => '["key":[CONTENT KEY]]', ]; /** * Configuration array can contain the following key value pairs. * * - logfn: (callable) Function that is invoked with log messages. By * default, PHP's "echo" function will be utilized. * - stream_size: (int) When the size of a stream is greater than this * number, the stream data will not be logged. Set to "0" to not log any * stream data. * - scrub_auth: (bool) Set to false to disable the scrubbing of auth data * from the logged messages. * - http: (bool) Set to false to disable the "debug" feature of lower * level HTTP adapters (e.g., verbose curl output). * - auth_strings: (array) A mapping of authentication string regular * expressions to scrubbed strings. These mappings are passed directly to * preg_replace (e.g., preg_replace($key, $value, $debugOutput) if * "scrub_auth" is set to true. * - auth_headers: (array) A mapping of header names known to contain * sensitive data to what the scrubbed value should be. The value of any * headers contained in this array will be replaced with the if * "scrub_auth" is set to true. */ public function __construct(array $config = []) { $this->config = $config + [ 'logfn' => function ($value) { echo $value; }, 'stream_size' => 524288, 'scrub_auth' => true, 'http' => true, 'auth_strings' => [], 'auth_headers' => [], ]; $this->config['auth_strings'] += self::$authStrings; $this->config['auth_headers'] += self::$authHeaders; } public function __invoke($step, $name) { $this->prevOutput = $this->prevInput = []; return function (callable $next) use ($step, $name) { return function ( CommandInterface $command, RequestInterface $request = null ) use ($next, $step, $name) { $this->createHttpDebug($command); $start = microtime(true); $this->stepInput([ 'step' => $step, 'name' => $name, 'request' => $this->requestArray($request), 'command' => $this->commandArray($command) ]); return $next($command, $request)->then( function ($value) use ($step, $name, $command, $start) { $this->flushHttpDebug($command); $this->stepOutput($start, [ 'step' => $step, 'name' => $name, 'result' => $this->resultArray($value), 'error' => null ]); return $value; }, function ($reason) use ($step, $name, $start, $command) { $this->flushHttpDebug($command); $this->stepOutput($start, [ 'step' => $step, 'name' => $name, 'result' => null, 'error' => $this->exceptionArray($reason) ]); return new RejectedPromise($reason); } ); }; }; } private function stepInput($entry) { static $keys = ['command', 'request']; $this->compareStep($this->prevInput, $entry, '-> Entering', $keys); $this->write("\n"); $this->prevInput = $entry; } private function stepOutput($start, $entry) { static $keys = ['result', 'error']; $this->compareStep($this->prevOutput, $entry, '<- Leaving', $keys); $totalTime = microtime(true) - $start; $this->write(" Inclusive step time: " . $totalTime . "\n\n"); $this->prevOutput = $entry; } private function compareStep(array $a, array $b, $title, array $keys) { $changes = []; foreach ($keys as $key) { $av = isset($a[$key]) ? $a[$key] : null; $bv = isset($b[$key]) ? $b[$key] : null; $this->compareArray($av, $bv, $key, $changes); } $str = "\n{$title} step {$b['step']}, name '{$b['name']}'"; $str .= "\n" . str_repeat('-', strlen($str) - 1) . "\n\n "; $str .= $changes ? implode("\n ", str_replace("\n", "\n ", $changes)) : 'no changes'; $this->write($str . "\n"); } private function commandArray(CommandInterface $cmd) { return [ 'instance' => spl_object_hash($cmd), 'name' => $cmd->getName(), 'params' => $cmd->toArray() ]; } private function requestArray(RequestInterface $request = null) { return !$request ? [] : array_filter([ 'instance' => spl_object_hash($request), 'method' => $request->getMethod(), 'headers' => $this->redactHeaders($request->getHeaders()), 'body' => $this->streamStr($request->getBody()), 'scheme' => $request->getUri()->getScheme(), 'port' => $request->getUri()->getPort(), 'path' => $request->getUri()->getPath(), 'query' => $request->getUri()->getQuery(), ]); } private function responseArray(ResponseInterface $response = null) { return !$response ? [] : [ 'instance' => spl_object_hash($response), 'statusCode' => $response->getStatusCode(), 'headers' => $this->redactHeaders($response->getHeaders()), 'body' => $this->streamStr($response->getBody()) ]; } private function resultArray($value) { return $value instanceof ResultInterface ? [ 'instance' => spl_object_hash($value), 'data' => $value->toArray() ] : $value; } private function exceptionArray($e) { if (!($e instanceof \Exception)) { return $e; } $result = [ 'instance' => spl_object_hash($e), 'class' => get_class($e), 'message' => $e->getMessage(), 'file' => $e->getFile(), 'line' => $e->getLine(), 'trace' => $e->getTraceAsString(), ]; if ($e instanceof AwsException) { $result += [ 'type' => $e->getAwsErrorType(), 'code' => $e->getAwsErrorCode(), 'requestId' => $e->getAwsRequestId(), 'statusCode' => $e->getStatusCode(), 'result' => $this->resultArray($e->getResult()), 'request' => $this->requestArray($e->getRequest()), 'response' => $this->responseArray($e->getResponse()), ]; } return $result; } private function compareArray($a, $b, $path, array &$diff) { if ($a === $b) { return; } if (is_array($a)) { $b = (array) $b; $keys = array_unique(array_merge(array_keys($a), array_keys($b))); foreach ($keys as $k) { if (!array_key_exists($k, $a)) { $this->compareArray(null, $b[$k], "{$path}.{$k}", $diff); } elseif (!array_key_exists($k, $b)) { $this->compareArray($a[$k], null, "{$path}.{$k}", $diff); } else { $this->compareArray($a[$k], $b[$k], "{$path}.{$k}", $diff); } } } elseif ($a !== null && $b === null) { $diff[] = "{$path} was unset"; } elseif ($a === null && $b !== null) { $diff[] = sprintf("%s was set to %s", $path, $this->str($b)); } else { $diff[] = sprintf("%s changed from %s to %s", $path, $this->str($a), $this->str($b)); } } private function str($value) { if (is_scalar($value)) { return (string) $value; } if ($value instanceof \Exception) { $value = $this->exceptionArray($value); } ob_start(); var_dump($value); return ob_get_clean(); } private function streamStr(StreamInterface $body) { return $body->getSize() < $this->config['stream_size'] ? (string) $body : 'stream(size=' . $body->getSize() . ')'; } private function createHttpDebug(CommandInterface $command) { if ($this->config['http'] && !isset($command['@http']['debug'])) { $command['@http']['debug'] = fopen('php://temp', 'w+'); } } private function flushHttpDebug(CommandInterface $command) { if ($res = $command['@http']['debug']) { rewind($res); $this->write(stream_get_contents($res)); fclose($res); $command['@http']['debug'] = null; } } private function write($value) { if ($this->config['scrub_auth']) { foreach ($this->config['auth_strings'] as $pattern => $replacement) { $value = preg_replace_callback( $pattern, function ($matches) use ($replacement) { return $replacement; }, $value ); } } call_user_func($this->config['logfn'], $value); } private function redactHeaders(array $headers) { if ($this->config['scrub_auth']) { $headers = $this->config['auth_headers'] + $headers; } return $headers; } } Back

Edit File : TraceMiddleware.php | Size : 10.72 KB

<?php
namespace Aws;

use Aws\Exception\AwsException;
use GuzzleHttp\Promise\RejectedPromise;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\StreamInterface;

/**
 * Traces state changes between middlewares.
 */
class TraceMiddleware
{
    private $prevOutput;
    private $prevInput;
    private $config;

private static $authHeaders = [
        'X-Amz-Security-Token' => '[TOKEN]',
    ];

private static $authStrings = [
        // S3Signature
        '/AWSAccessKeyId=[A-Z0-9]{20}&/i' => 'AWSAccessKeyId=[KEY]&',
        // SignatureV4 Signature and S3Signature
        '/Signature=.+/i' => 'Signature=[SIGNATURE]',
        // SignatureV4 access key ID
        '/Credential=[A-Z0-9]{20}\//i' => 'Credential=[KEY]/',
        // S3 signatures
        '/AWS [A-Z0-9]{20}:.+/' => 'AWS AKI[KEY]:[SIGNATURE]',
        // STS Presigned URLs
        '/X-Amz-Security-Token=[^&]+/i' => 'X-Amz-Security-Token=[TOKEN]',
        // Crypto *Stream Keys
        '/\["key.{27,36}Stream.{9}\]=>\s+.{7}\d{2}\) "\X{16,64}"/U' => '["key":[CONTENT KEY]]',
    ];

/**
     * Configuration array can contain the following key value pairs.
     *
     * - logfn: (callable) Function that is invoked with log messages. By
     *   default, PHP's "echo" function will be utilized.
     * - stream_size: (int) When the size of a stream is greater than this
     *   number, the stream data will not be logged. Set to "0" to not log any
     *   stream data.
     * - scrub_auth: (bool) Set to false to disable the scrubbing of auth data
     *   from the logged messages.
     * - http: (bool) Set to false to disable the "debug" feature of lower
     *   level HTTP adapters (e.g., verbose curl output).
     * - auth_strings: (array) A mapping of authentication string regular
     *   expressions to scrubbed strings. These mappings are passed directly to
     *   preg_replace (e.g., preg_replace($key, $value, $debugOutput) if
     *   "scrub_auth" is set to true.
     * - auth_headers: (array) A mapping of header names known to contain
     *   sensitive data to what the scrubbed value should be. The value of any
     *   headers contained in this array will be replaced with the if
     *   "scrub_auth" is set to true.
     */
    public function __construct(array $config = [])
    {
        $this->config = $config + [
            'logfn'        => function ($value) { echo $value; },
            'stream_size'  => 524288,
            'scrub_auth'   => true,
            'http'         => true,
            'auth_strings' => [],
            'auth_headers' => [],
        ];

$this->config['auth_strings'] += self::$authStrings;
        $this->config['auth_headers'] += self::$authHeaders;
    }

public function __invoke($step, $name)
    {
        $this->prevOutput = $this->prevInput = [];

return function (callable $next) use ($step, $name) {
            return function (
                CommandInterface $command,
                RequestInterface $request = null
            ) use ($next, $step, $name) {
                $this->createHttpDebug($command);
                $start = microtime(true);
                $this->stepInput([
                    'step'    => $step,
                    'name'    => $name,
                    'request' => $this->requestArray($request),
                    'command' => $this->commandArray($command)
                ]);

return $next($command, $request)->then(
                    function ($value) use ($step, $name, $command, $start) {
                        $this->flushHttpDebug($command);
                        $this->stepOutput($start, [
                            'step'   => $step,
                            'name'   => $name,
                            'result' => $this->resultArray($value),
                            'error'  => null
                        ]);
                        return $value;
                    },
                    function ($reason) use ($step, $name, $start, $command) {
                        $this->flushHttpDebug($command);
                        $this->stepOutput($start, [
                            'step'   => $step,
                            'name'   => $name,
                            'result' => null,
                            'error'  => $this->exceptionArray($reason)
                        ]);
                        return new RejectedPromise($reason);
                    }
                );
            };
        };
    }

private function stepInput($entry)
    {
        static $keys = ['command', 'request'];
        $this->compareStep($this->prevInput, $entry, '-> Entering', $keys);
        $this->write("\n");
        $this->prevInput = $entry;
    }

private function stepOutput($start, $entry)
    {
        static $keys = ['result', 'error'];
        $this->compareStep($this->prevOutput, $entry, '<- Leaving', $keys);
        $totalTime = microtime(true) - $start;
        $this->write("  Inclusive step time: " . $totalTime . "\n\n");
        $this->prevOutput = $entry;
    }

private function compareStep(array $a, array $b, $title, array $keys)
    {
        $changes = [];
        foreach ($keys as $key) {
            $av = isset($a[$key]) ? $a[$key] : null;
            $bv = isset($b[$key]) ? $b[$key] : null;
            $this->compareArray($av, $bv, $key, $changes);
        }
        $str = "\n{$title} step {$b['step']}, name '{$b['name']}'";
        $str .= "\n" . str_repeat('-', strlen($str) - 1) . "\n\n  ";
        $str .= $changes
            ? implode("\n  ", str_replace("\n", "\n  ", $changes))
            : 'no changes';
        $this->write($str . "\n");
    }

private function commandArray(CommandInterface $cmd)
    {
        return [
            'instance' => spl_object_hash($cmd),
            'name'     => $cmd->getName(),
            'params'   => $cmd->toArray()
        ];
    }

private function requestArray(RequestInterface $request = null)
    {
        return !$request ? [] : array_filter([
            'instance' => spl_object_hash($request),
            'method'   => $request->getMethod(),
            'headers'  => $this->redactHeaders($request->getHeaders()),
            'body'     => $this->streamStr($request->getBody()),
            'scheme'   => $request->getUri()->getScheme(),
            'port'     => $request->getUri()->getPort(),
            'path'     => $request->getUri()->getPath(),
            'query'    => $request->getUri()->getQuery(),
        ]);
    }

private function responseArray(ResponseInterface $response = null)
    {
        return !$response ? [] : [
            'instance'   => spl_object_hash($response),
            'statusCode' => $response->getStatusCode(),
            'headers'    => $this->redactHeaders($response->getHeaders()),
            'body'       => $this->streamStr($response->getBody())
        ];
    }

private function resultArray($value)
    {
        return $value instanceof ResultInterface
            ? [
                'instance' => spl_object_hash($value),
                'data'     => $value->toArray()
            ] : $value;
    }

private function exceptionArray($e)
    {
        if (!($e instanceof \Exception)) {
            return $e;
        }

$result = [
            'instance'   => spl_object_hash($e),
            'class'      => get_class($e),
            'message'    => $e->getMessage(),
            'file'       => $e->getFile(),
            'line'       => $e->getLine(),
            'trace'      => $e->getTraceAsString(),
        ];

if ($e instanceof AwsException) {
            $result += [
                'type'       => $e->getAwsErrorType(),
                'code'       => $e->getAwsErrorCode(),
                'requestId'  => $e->getAwsRequestId(),
                'statusCode' => $e->getStatusCode(),
                'result'     => $this->resultArray($e->getResult()),
                'request'    => $this->requestArray($e->getRequest()),
                'response'   => $this->responseArray($e->getResponse()),
            ];
        }

return $result;
    }

private function compareArray($a, $b, $path, array &$diff)
    {
        if ($a === $b) {
            return;
        }

if (is_array($a)) {
            $b = (array) $b;
            $keys = array_unique(array_merge(array_keys($a), array_keys($b)));
            foreach ($keys as $k) {
                if (!array_key_exists($k, $a)) {
                    $this->compareArray(null, $b[$k], "{$path}.{$k}", $diff);
                } elseif (!array_key_exists($k, $b)) {
                    $this->compareArray($a[$k], null, "{$path}.{$k}", $diff);
                } else {
                    $this->compareArray($a[$k], $b[$k], "{$path}.{$k}", $diff);
                }
            }
        } elseif ($a !== null && $b === null) {
            $diff[] = "{$path} was unset";
        } elseif ($a === null && $b !== null) {
            $diff[] = sprintf("%s was set to %s", $path, $this->str($b));
        } else {
            $diff[] = sprintf("%s changed from %s to %s", $path, $this->str($a), $this->str($b));
        }
    }

private function str($value)
    {
        if (is_scalar($value)) {
            return (string) $value;
        }

if ($value instanceof \Exception) {
            $value = $this->exceptionArray($value);
        }

ob_start();
        var_dump($value);
        return ob_get_clean();
    }

private function streamStr(StreamInterface $body)
    {
        return $body->getSize() < $this->config['stream_size']
            ? (string) $body
            : 'stream(size=' . $body->getSize() . ')';
    }

private function createHttpDebug(CommandInterface $command)
    {
        if ($this->config['http'] && !isset($command['@http']['debug'])) {
            $command['@http']['debug'] = fopen('php://temp', 'w+');
        }
    }

private function flushHttpDebug(CommandInterface $command)
    {
        if ($res = $command['@http']['debug']) {
            rewind($res);
            $this->write(stream_get_contents($res));
            fclose($res);
            $command['@http']['debug'] = null;
        }
    }

private function write($value)
    {
        if ($this->config['scrub_auth']) {
            foreach ($this->config['auth_strings'] as $pattern => $replacement) {
                $value = preg_replace_callback(
                    $pattern,
                    function ($matches) use ($replacement) {
                        return $replacement;
                    },
                    $value
                );
            }
        }

call_user_func($this->config['logfn'], $value);
    }

private function redactHeaders(array $headers)
    {
        if ($this->config['scrub_auth']) {
            $headers = $this->config['auth_headers'] + $headers;
        }

return $headers;
    }
}

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