Amazone S3 PHP Class

Here we used “Amazon S3 PHP Class”.

In this application we used three pages (index.php, S3.php, style.css).

First page is “index.php”. In this page we have to include “S3.php”, which is the S3 PHP Class.

$s3 = new S3(awsAccessKey, awsSecretKey);

In the above function we have to pass the awsAccessKey and awsSecretKey.

In index.php we are using one form for uploading file.

We cannot upload files larger than 2GB.

To create a bucket we used the function putBucket(bucket, acl).

The first argument ‘bucket’ is the name of the bucket (Amazon’s word for your main folder or directory of files).

The second argument is the Access Control List (ACL) in which we can define who can and who cannot read from or write to this bucket.

We want anybody to be able to read our files, so we’ll use S3::ACL_PUBLIC_READ.

Note that a bucket only needs to be created once, so every next time this script is executed this function won’t do anything, since the bucket already exists.

Now when we select a file and hit ‘Upload’ the file will be stored on the amazon server. we can already view it just by entering a URL that looks like this:

http://example.s3.amazoneaws.com/ourfile.ext (s3 bucket url)

OR

http://example55522.cloudfront.net/ourfile.ext. (CloudFront url)

Finally we’ll want the script to output a list of files in the bucket. For this we’ll use the function getBucket(bucket), in which bucket is the bucket we want to output. This function returns an array with information about the files. Each returned as an array, too.

We want to output every file in the $bucket_contents array. For this we’ll use a foreach() loop which will loop through the array until all elements have been processed. It will store the current element in the $file variable and execute the code in between the brackets. All we need to do now is echo a link to the file.

Below are some useful links which I followed for my application.

http://undesigned.org.za/2007/10/22/amazon-s3-php-class

 

https://github.com/tpyo/amazon-s3-php-class

 

http://net.tutsplus.com/tutorials/php/how-to-use-amazon-s3-php-to-dynamically-store-and-manage-files-with-ease/

Below is the code: -

vi index.php

<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”&gt;
<html xmlns=”http://www.w3.org/1999/xhtml”&gt;
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″ />
<title>S3 Image Upload</title>
<link href=”style.css” rel=”stylesheet” type=”text/css”>
</head>

<body>
<?php

error_reporting(0);

//include the S3 class
if (!class_exists(‘S3′))require_once(‘S3.php’);

//AWS access info
if (!defined(‘awsAccessKey’)) define(‘awsAccessKey’, ‘CHANGE THIS’);
if (!defined(‘awsSecretKey’)) define(‘awsSecretKey’, ‘CHANGE THIS TOO’);

//instantiate the class
$s3 = new S3(xxxxxx, xxxxxxx);

//check whether a form was submitted
if(isset($_POST['Submit']))
{
//retreive post variables
$fileName = $_FILES['theFile']['name'];
$fileTempName = $_FILES['theFile']['tmp_name'];

//create a new bucket
$s3->putBucket(“bumeimages”, S3::ACL_PUBLIC_READ); //If the BUCKET is not created, here we can create a new bucket.

//move the file
if ($s3->putObjectFile($fileTempName, “example”, $fileName, S3::ACL_PUBLIC_READ)) {
echo “<strong>We successfully uploaded your file.</strong>”;
}else{
echo “<strong>Something went wrong while uploading your file… sorry.</strong>”;
}
}
?>
<h1>Upload a file</h1>
<p>Please select a file by clicking the ‘Browse’ button and press ‘Upload’ to start uploading your file to AWS S3.</p>
<form action=”” method=”post” enctype=”multipart/form-data” name=”form1″ id=”form1″>
<input name=”theFile” type=”file” />
<input name=”Submit” type=”submit” value=”Upload”>
</form>
<h1>All uploaded files</h1>
<?php
// Get the contents of our bucket
$contents = $s3->getBucket(“example”);

if(isset($contents) && $contents != ”)
{
foreach ($contents as $file)
{
$fname = $file['name'];
$furl = “http://example880.cloudfront.net/&#8221;.$fname;

//output a link to the file
echo “<a href=\”$furl\” target=\”_blank\”>$fname</a><br />”;
}
}
?>
</body>
</html>

vi S3.php

<?php
/**
* $Id$
*
* Copyright (c) 2007, Donovan Schonknecht. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* – Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* – Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS”
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

/**
* Amazon S3 PHP class
*
* @link http://undesigned.org.za/2007/10/22/amazon-s3-php-class
* @version 0.2.3
*/
class S3 {
// ACL flags
const ACL_PRIVATE = ‘private’;
const ACL_PUBLIC_READ = ‘public-read’;
const ACL_PUBLIC_READ_WRITE = ‘public-read-write’;

private static $__accessKey; // AWS Access key
private static $__secretKey; // AWS Secret key

/**
* Constructor, used if you’re not calling the class statically
*
* @param string $accessKey Access key
* @param string $secretKey Secret key
* @return void
*/
public function __construct($accessKey = null, $secretKey = null) {
if ($accessKey !== null && $secretKey !== null)
self::setAuth($accessKey, $secretKey);
}

/**
* Set access information
*
* @param string $accessKey Access key
* @param string $secretKey Secret key
* @return void
*/
public static function setAuth($accessKey, $secretKey) {
self::$__accessKey = $accessKey;
self::$__secretKey = $secretKey;
}

/**
* Get a list of buckets
*
* @param boolean $detailed Returns detailed bucket list when true
* @return array | false
*/
public static function listBuckets($detailed = false) {
$rest = new S3Request(‘GET’, ”, ”);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 200)
$rest->error = array(‘code’ => $rest->code, ‘message’ => ‘Unexpected HTTP status’);
if ($rest->error !== false) {
trigger_error(sprintf(“S3::listBuckets(): [%s] %s”, $rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
$results = array(); //var_dump($rest->body);
if (!isset($rest->body->Buckets)) return $results;

if ($detailed) {
if (isset($rest->body->Owner, $rest->body->Owner->ID, $rest->body->Owner->DisplayName))
$results['owner'] = array(
‘id’ => (string)$rest->body->Owner->ID, ‘name’ => (string)$rest->body->Owner->ID
);
$results['buckets'] = array();
foreach ($rest->body->Buckets->Bucket as $b)
$results['buckets'][] = array(
‘name’ => (string)$b->Name, ‘time’ => strtotime((string)$b->CreationDate)
);
} else
foreach ($rest->body->Buckets->Bucket as $b) $results[] = (string)$b->Name;

return $results;
}

/*
* Get contents for a bucket
*
* If maxKeys is null this method will loop through truncated result sets
*
* @param string $bucket Bucket name
* @param string $prefix Prefix
* @param string $marker Marker (last file listed)
* @param string $maxKeys Max keys (maximum number of keys to return)
* @return array | false
*/
public static function getBucket($bucket, $prefix = null, $marker = null, $maxKeys = null) {
$rest = new S3Request(‘GET’, $bucket, ”);
if ($prefix !== null && $prefix !== ”) $rest->setParameter(‘prefix’, $prefix);
if ($marker !== null && $prefix !== ”) $rest->setParameter(‘marker’, $marker);
if ($maxKeys !== null && $prefix !== ”) $rest->setParameter(‘max-keys’, $maxKeys);
$response = $rest->getResponse();
if ($response->error === false && $response->code !== 200)
$response->error = array(‘code’ => $response->code, ‘message’ => ‘Unexpected HTTP status’);
if ($response->error !== false) {
trigger_error(sprintf(“S3::getBucket(): [%s] %s”, $response->error['code'], $response->error['message']), E_USER_WARNING);
return false;
}

$results = array();

$lastMarker = null;
if (isset($response->body, $response->body->Contents))
foreach ($response->body->Contents as $c) {
$results[(string)$c->Key] = array(
‘name’ => (string)$c->Key,
‘time’ => strToTime((string)$c->LastModified),
‘size’ => (int)$c->Size,
‘hash’ => substr((string)$c->ETag, 1, -1)
);
$lastMarker = (string)$c->Key;
//$response->body->IsTruncated = ‘true’; break;
}

if (isset($response->body->IsTruncated) &&
(string)$response->body->IsTruncated == ‘false’) return $results;

// Loop through truncated results if maxKeys isn’t specified
if ($maxKeys == null && $lastMarker !== null && (string)$response->body->IsTruncated == ‘true’)
do {
$rest = new S3Request(‘GET’, $bucket, ”);
if ($prefix !== null) $rest->setParameter(‘prefix’, $prefix);
$rest->setParameter(‘marker’, $lastMarker);

if (($response = $rest->getResponse(true)) == false || $response->code !== 200) break;
if (isset($response->body, $response->body->Contents))
foreach ($response->body->Contents as $c) {
$results[(string)$c->Key] = array(
‘name’ => (string)$c->Key,
‘time’ => strToTime((string)$c->LastModified),
‘size’ => (int)$c->Size,
‘hash’ => substr((string)$c->ETag, 1, -1)
);
$lastMarker = (string)$c->Key;
}
} while ($response !== false && (string)$response->body->IsTruncated == ‘true’);

return $results;
}

/**
* Put a bucket
*
* @param string $bucket Bucket name
* @param constant $acl ACL flag
* @return boolean
*/
public function putBucket($bucket, $acl = self::ACL_PRIVATE) {
$rest = new S3Request(‘PUT’, $bucket, ”);
$rest->setAmzHeader(‘x-amz-acl’, $acl);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 200)
$rest->error = array(‘code’ => $rest->code, ‘message’ => ‘Unexpected HTTP status’);
if ($rest->error !== false) {
trigger_error(sprintf(“S3::putBucket({$bucket}): [%s] %s”,
$rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
return true;
}

/**
* Delete an empty bucket
*
* @param string $bucket Bucket name
* @return boolean
*/
public function deleteBucket($bucket = ”) {
$rest = new S3Request(‘DELETE’, $bucket);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 204)
$rest->error = array(‘code’ => $rest->code, ‘message’ => ‘Unexpected HTTP status’);
if ($rest->error !== false) {
trigger_error(sprintf(“S3::deleteBucket({$bucket}): [%s] %s”,
$rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
return true;
}

/**
* Create input info array for putObject()
*
* @param string $file Input file
* @param mixed $md5sum Use MD5 hash (supply a string if you want to use your own)
* @return array | false
*/
public static function inputFile($file, $md5sum = true) {
if (!file_exists($file) || !is_file($file) || !is_readable($file)) {
trigger_error(‘S3::inputFile(): Unable to open input file: ‘.$file, E_USER_WARNING);
return false;
}
return array(‘file’ => $file, ‘size’ => filesize($file),
‘md5sum’ => $md5sum !== false ? (is_string($md5sum) ? $md5sum :
base64_encode(md5_file($file, true))) : ”);
}

/**
* Use a resource for input
*
* @param string $file Input file
* @param integer $bufferSize Input byte size
* @param string $md5sum MD5 hash to send (optional)
* @return array | false
*/
public static function inputResource(&$resource, $bufferSize, $md5sum = ”) {
if (!is_resource($resource) || $bufferSize <= 0) {
trigger_error(‘S3::inputResource(): Invalid resource or buffer size’, E_USER_WARNING);
return false;
}
$input = array(‘size’ => $bufferSize, ‘md5sum’ => $md5sum);
$input['fp'] =& $resource;
return $input;
}

/**
* Put an object
*
* @param mixed $input Input data
* @param string $bucket Bucket name
* @param string $uri Object URI
* @param constant $acl ACL constant
* @param array $metaHeaders Array of x-amz-meta-* headers
* @param string $contentType Content type
* @return boolean
*/
public static function putObject($input, $bucket, $uri, $acl = self::ACL_PRIVATE, $metaHeaders = array(), $contentType = null) {

if ($input == false) return false;
$rest = new S3Request(‘PUT’, $bucket, $uri);

if (is_string($input)) $input = array(
‘data’ => $input, ‘size’ => strlen($input),
‘md5sum’ => base64_encode(md5($input, true))
);

// Data
if (isset($input['fp']))
$rest->fp =& $input['fp'];
elseif (isset($input['file']))
$rest->fp = @fopen($input['file'], ‘rb’);
elseif (isset($input['data']))
$rest->data = $input['data'];

// Content-Length (required)
if (isset($input['size']) && $input['size'] > 0)
$rest->size = $input['size'];
else {
if (isset($input['file']))
$rest->size = filesize($input['file']);
elseif (isset($input['data']))
$rest->size = strlen($input['data']);
}

// Content-Type
if ($contentType !== null)
$input['type'] = $contentType;
elseif (!isset($input['type']) && isset($input['file']))
$input['type'] = self::__getMimeType($input['file']);
else
$input['type'] = ‘application/octet-stream’;

// We need to post with the content-length and content-type, MD5 is optional
if ($rest->size > 0 && ($rest->fp !== false || $rest->data !== false)) {
$rest->setHeader(‘Content-Type’, $input['type']);
if (isset($input['md5sum'])) $rest->setHeader(‘Content-MD5′, $input['md5sum']);

$rest->setAmzHeader(‘x-amz-acl’, $acl);
foreach ($metaHeaders as $h => $v) $rest->setAmzHeader(‘x-amz-meta-’.$h, $v);
$rest->getResponse();
} else
$rest->response->error = array(‘code’ => 0, ‘message’ => ‘Missing input parameters’);

if ($rest->response->error === false && $rest->response->code !== 200)
$rest->response->error = array(‘code’ => $rest->response->code, ‘message’ => ‘Unexpected HTTP status’);
if ($rest->response->error !== false) {
trigger_error(sprintf(“S3::putObject(): [%s] %s”, $rest->response->error['code'], $rest->response->error['message']), E_USER_WARNING);
return false;
}
return true;
}

/**
* Puts an object from a file (legacy function)
*
* @param string $file Input file path
* @param string $bucket Bucket name
* @param string $uri Object URI
* @param constant $acl ACL constant
* @param array $metaHeaders Array of x-amz-meta-* headers
* @param string $contentType Content type
* @return boolean
*/
public static function putObjectFile($file, $bucket, $uri, $acl = self::ACL_PRIVATE, $metaHeaders = array(), $contentType = null) {
return self::putObject(S3::inputFile($file), $bucket, $uri, $acl, $metaHeaders, $contentType);
}

/**
* Put an object from a string (legacy function)
*
* @param string $string Input data
* @param string $bucket Bucket name
* @param string $uri Object URI
* @param constant $acl ACL constant
* @param array $metaHeaders Array of x-amz-meta-* headers
* @param string $contentType Content type
* @return boolean
*/
public function putObjectString($string, $bucket, $uri, $acl = self::ACL_PRIVATE, $metaHeaders = array(), $contentType = ‘text/plain’) {
return self::putObject($string, $bucket, $uri, $acl, $metaHeaders, $contentType);
}

/**
* Get an object
*
* @param string $bucket Bucket name
* @param string $uri Object URI
* @param mixed &$saveTo Filename or resource to write to
* @return mixed
*/
public static function getObject($bucket = ”, $uri = ”, $saveTo = false) {
$rest = new S3Request(‘GET’, $bucket, $uri);
if ($saveTo !== false) {
if (is_resource($saveTo))
$rest->fp =& $saveTo;
else
if (($rest->fp = @fopen($saveTo, ‘wb’)) == false)
$rest->response->error = array(‘code’ => 0, ‘message’ => ‘Unable to open save file for writing: ‘.$saveTo);
}
if ($rest->response->error === false) $rest->getResponse();

if ($rest->response->error === false && $rest->response->code !== 200)
$rest->response->error = array(‘code’ => $rest->response->code, ‘message’ => ‘Unexpected HTTP status’);
if ($rest->response->error !== false) {
trigger_error(sprintf(“S3::getObject({$bucket}, {$uri}): [%s] %s”,
$rest->response->error['code'], $rest->response->error['message']), E_USER_WARNING);
return false;
}
$rest->file = realpath($saveTo);
return $rest->response;
}

/**
* Get object information
*
* @param string $bucket Bucket name
* @param string $uri Object URI
* @param boolean $returnInfo Return response information
* @return mixed | false
*/
public static function getObjectInfo($bucket = ”, $uri = ”, $returnInfo = true) {
$rest = new S3Request(‘HEAD’, $bucket, $uri);
$rest = $rest->getResponse();
if ($rest->error === false && ($rest->code !== 200 && $rest->code !== 404))
$rest->error = array(‘code’ => $rest->code, ‘message’ => ‘Unexpected HTTP status’);
if ($rest->error !== false) {
trigger_error(sprintf(“S3::getObjectInfo({$bucket}, {$uri}): [%s] %s”,
$rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
return $rest->code == 200 ? $returnInfo ? $rest->headers : true : false;
}

/**
* Set logging for a bucket
*
* @param string $bucket Bucket name
* @param string $targetBucket Target bucket (where logs are stored)
* @param string $targetPrefix Log prefix (e,g; domain.com-)
* @return boolean
*/
public static function setBucketLogging($bucket, $targetBucket, $targetPrefix) {
$dom = new DOMDocument;
$bucketLoggingStatus = $dom->createElement(‘BucketLoggingStatus’);
$bucketLoggingStatus->setAttribute(‘xmlns’, ‘http://s3.amazonaws.com/doc/2006-03-01/&#8217;);

$loggingEnabled = $dom->createElement(‘LoggingEnabled’);

$loggingEnabled->appendChild($dom->createElement(‘TargetBucket’, $targetBucket));
$loggingEnabled->appendChild($dom->createElement(‘TargetPrefix’, $targetPrefix));

// TODO: Add TargetGrants

$bucketLoggingStatus->appendChild($loggingEnabled);
$dom->appendChild($bucketLoggingStatus);

$rest = new S3Request(‘PUT’, $bucket, ”);
$rest->setParameter(‘logging’, null);
$rest->data = $dom->saveXML();
$rest->size = strlen($rest->data);
$rest->setHeader(‘Content-Type’, ‘application/xml’);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 200)
$rest->error = array(‘code’ => $rest->code, ‘message’ => ‘Unexpected HTTP status’);
if ($rest->error !== false) {
trigger_error(sprintf(“S3::setBucketLogging({$bucket}, {$uri}): [%s] %s”,
$rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
return true;
}

/**
* Get logging status for a bucket
*
* This will return false if logging is not enabled.
* Note: To enable logging, you also need to grant write access to the log group
*
* @param string $bucket Bucket name
* @return array | false
*/
public static function getBucketLogging($bucket = ”) {
$rest = new S3Request(‘GET’, $bucket, ”);
$rest->setParameter(‘logging’, null);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 200)
$rest->error = array(‘code’ => $rest->code, ‘message’ => ‘Unexpected HTTP status’);
if ($rest->error !== false) {
trigger_error(sprintf(“S3::getBucketLogging({$bucket}): [%s] %s”,
$rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
if (!isset($rest->body->LoggingEnabled)) return false; // No logging
return array(
‘targetBucket’ => (string)$rest->body->LoggingEnabled->TargetBucket,
‘targetPrefix’ => (string)$rest->body->LoggingEnabled->TargetPrefix,
);
}

/**
* Set object or bucket Access Control Policy
*
* @param string $bucket Bucket name
* @param string $uri Object URI
* @param array $acp Access Control Policy Data (same as the data returned from getAccessControlPolicy)
* @return boolean
*/
public static function setAccessControlPolicy($bucket, $uri = ”, $acp = array()) {
$dom = new DOMDocument;
$dom->formatOutput = true;
$accessControlPolicy = $dom->createElement(‘AccessControlPolicy’);
$accessControlList = $dom->createElement(‘AccessControlList’);

// It seems the owner has to be passed along too
$owner = $dom->createElement(‘Owner’);
$owner->appendChild($dom->createElement(‘ID’, $acp['owner']['id']));
$owner->appendChild($dom->createElement(‘DisplayName’, $acp['owner']['name']));
$accessControlPolicy->appendChild($owner);

foreach ($acp['acl'] as $g) {
$grant = $dom->createElement(‘Grant’);
$grantee = $dom->createElement(‘Grantee’);
$grantee->setAttribute(‘xmlns:xsi’, ‘http://www.w3.org/2001/XMLSchema-instance&#8217;);
if (isset($g['id'])) { // CanonicalUser (DisplayName is omitted)
$grantee->setAttribute(‘xsi:type’, ‘CanonicalUser’);
$grantee->appendChild($dom->createElement(‘ID’, $g['id']));
} elseif (isset($g['email'])) { // AmazonCustomerByEmail
$grantee->setAttribute(‘xsi:type’, ‘AmazonCustomerByEmail’);
$grantee->appendChild($dom->createElement(‘EmailAddress’, $g['email']));
} elseif ($g['type'] == ‘Group’) { // Group
$grantee->setAttribute(‘xsi:type’, ‘Group’);
$grantee->appendChild($dom->createElement(‘URI’, $g['uri']));
}
$grant->appendChild($grantee);
$grant->appendChild($dom->createElement(‘Permission’, $g['permission']));
$accessControlList->appendChild($grant);
}

$accessControlPolicy->appendChild($accessControlList);
$dom->appendChild($accessControlPolicy);

$rest = new S3Request(‘PUT’, $bucket, ”);
$rest->setParameter(‘acl’, null);
$rest->data = $dom->saveXML();
$rest->size = strlen($rest->data);
$rest->setHeader(‘Content-Type’, ‘application/xml’);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 200)
$rest->error = array(‘code’ => $rest->code, ‘message’ => ‘Unexpected HTTP status’);
if ($rest->error !== false) {
trigger_error(sprintf(“S3::setAccessControlPolicy({$bucket}, {$uri}): [%s] %s”,
$rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
return true;
}

/**
* Get object or bucket Access Control Policy
*
* Currently this will trigger an error if there is no ACL on an object (will fix soon)
*
* @param string $bucket Bucket name
* @param string $uri Object URI
* @return mixed | false
*/
public static function getAccessControlPolicy($bucket, $uri = ”) {
$rest = new S3Request(‘GET’, $bucket, $uri);
$rest->setParameter(‘acl’, null);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 200)
$rest->error = array(‘code’ => $rest->code, ‘message’ => ‘Unexpected HTTP status’);
if ($rest->error !== false) {
trigger_error(sprintf(“S3::getAccessControlPolicy({$bucket}, {$uri}): [%s] %s”,
$rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}

$acp = array();
if (isset($rest->body->Owner, $rest->body->Owner->ID, $rest->body->Owner->DisplayName)) {
$acp['owner'] = array(
‘id’ => (string)$rest->body->Owner->ID, ‘name’ => (string)$rest->body->Owner->DisplayName
);
}
if (isset($rest->body->AccessControlList)) {
$acp['acl'] = array();
foreach ($rest->body->AccessControlList->Grant as $grant) {
foreach ($grant->Grantee as $grantee) {
if (isset($grantee->ID, $grantee->DisplayName)) // CanonicalUser
$acp['acl'][] = array(
‘type’ => ‘CanonicalUser’,
‘id’ => (string)$grantee->ID,
‘name’ => (string)$grantee->DisplayName,
‘permission’ => (string)$grant->Permission
);
elseif (isset($grantee->EmailAddress)) // AmazonCustomerByEmail
$acp['acl'][] = array(
‘type’ => ‘AmazonCustomerByEmail’,
‘email’ => (string)$grantee->EmailAddress,
‘permission’ => (string)$grant->Permission
);
elseif (isset($grantee->URI)) // Group
$acp['acl'][] = array(
‘type’ => ‘Group’,
‘uri’ => (string)$grantee->URI,
‘permission’ => (string)$grant->Permission
);
else continue;
}
}
}
return $acp;
}

/**
* Delete an object
*
* @param string $bucket Bucket name
* @param string $uri Object URI
* @return mixed
*/
public static function deleteObject($bucket = ”, $uri = ”) {
$rest = new S3Request(‘DELETE’, $bucket, $uri);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 204)
$rest->error = array(‘code’ => $rest->code, ‘message’ => ‘Unexpected HTTP status’);
if ($rest->error !== false) {
trigger_error(sprintf(“S3::deleteObject(): [%s] %s”, $rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
return true;
}

/**
* Get MIME type for file
*
* @internal Used to get mime types
* @param string &$file File path
* @return string
*/
public static function __getMimeType(&$file) {
$type = false;
// Fileinfo documentation says fileinfo_open() will use the
// MAGIC env var for the magic file
if (extension_loaded(‘fileinfo’) && isset($_ENV['MAGIC']) &&
($finfo = finfo_open(FILEINFO_MIME, $_ENV['MAGIC'])) !== false) {
if (($type = finfo_file($finfo, $file)) !== false) {
// Remove the charset and grab the last content-type
$type = explode(‘ ‘, str_replace(‘; charset=’, ‘;charset=’, $type));
$type = array_pop($type);
$type = explode(‘;’, $type);
$type = array_shift($type);
}
finfo_close($finfo);

// If anyone is still using mime_content_type()
} elseif (function_exists(‘mime_content_type’))
$type = mime_content_type($file);

if ($type !== false && strlen($type) > 0) return $type;

// Otherwise do it the old fashioned way
static $exts = array(
‘jpg’ => ‘image/jpeg’, ‘gif’ => ‘image/gif’, ‘png’ => ‘image/png’,
‘tif’ => ‘image/tiff’, ‘tiff’ => ‘image/tiff’, ‘ico’ => ‘image/x-icon’,
‘swf’ => ‘application/x-shockwave-flash’, ‘pdf’ => ‘application/pdf’,
‘zip’ => ‘application/zip’, ‘gz’ => ‘application/x-gzip’,
‘tar’ => ‘application/x-tar’, ‘bz’ => ‘application/x-bzip’,
‘bz2′ => ‘application/x-bzip2′, ‘txt’ => ‘text/plain’,
‘asc’ => ‘text/plain’, ‘htm’ => ‘text/html’, ‘html’ => ‘text/html’,
‘xml’ => ‘text/xml’, ‘xsl’ => ‘application/xsl+xml’,
‘ogg’ => ‘application/ogg’, ‘mp3′ => ‘audio/mpeg’, ‘wav’ => ‘audio/x-wav’,
‘avi’ => ‘video/x-msvideo’, ‘mpg’ => ‘video/mpeg’, ‘mpeg’ => ‘video/mpeg’,
‘mov’ => ‘video/quicktime’, ‘flv’ => ‘video/x-flv’, ‘php’ => ‘text/x-php’
);
$ext = strToLower(pathInfo($file, PATHINFO_EXTENSION));
return isset($exts[$ext]) ? $exts[$ext] : ‘application/octet-stream’;
}

/**
* Generate the auth string: “AWS AccessKey:Signature”
*
* This uses the hash extension if loaded
*
* @internal Signs the request
* @param string $string String to sign
* @return string
*/
public static function __getSignature($string) {
return ‘AWS ‘.self::$__accessKey.’:’.base64_encode(extension_loaded(‘hash’) ?
hash_hmac(‘sha1′, $string, self::$__secretKey, true) : pack(‘H*’, sha1(
(str_pad(self::$__secretKey, 64, chr(0×00)) ^ (str_repeat(chr(0x5c), 64))) .
pack(‘H*’, sha1((str_pad(self::$__secretKey, 64, chr(0×00)) ^
(str_repeat(chr(0×36), 64))) . $string)))));
}

}

final class S3Request {
private $verb, $bucket, $uri, $resource = ”, $parameters = array(),
$amzHeaders = array(), $headers = array(
‘Host’ => ”, ‘Date’ => ”, ‘Content-MD5′ => ”, ‘Content-Type’ => ”
);
public $fp = false, $size = 0, $data = false, $response;

/**
* Constructor
*
* @param string $verb Verb
* @param string $bucket Bucket name
* @param string $uri Object URI
* @return mixed
*/
function __construct($verb, $bucket = ”, $uri = ”) {
$this->verb = $verb;
$this->bucket = strtolower($bucket);
$this->uri = $uri !== ” ? ‘/’.$uri : ‘/’;

if ($this->bucket !== ”) {
$this->bucket = explode(‘/’, $this->bucket);
$this->resource = ‘/’.$this->bucket[0].$this->uri;
$this->headers['Host'] = $this->bucket[0].’.s3.amazonaws.com’;
$this->bucket = implode(‘/’, $this->bucket);
} else {
$this->headers['Host'] = ‘s3.amazonaws.com’;
if (strlen($this->uri) > 1)
$this->resource = ‘/’.$this->bucket.$this->uri;
else $this->resource = $this->uri;
}
$this->headers['Date'] = gmdate(‘D, d M Y H:i:s T’);

$this->response = new STDClass;
$this->response->error = false;
}

/**
* Set request parameter
*
* @param string $key Key
* @param string $value Value
* @return void
*/
public function setParameter($key, $value) {
$this->parameters[$key] = $value;
}

/**
* Set request header
*
* @param string $key Key
* @param string $value Value
* @return void
*/
public function setHeader($key, $value) {
$this->headers[$key] = $value;
}

/**
* Set x-amz-meta-* header
*
* @param string $key Key
* @param string $value Value
* @return void
*/
public function setAmzHeader($key, $value) {
$this->amzHeaders[$key] = $value;
}

/**
* Get the S3 response
*
* @return object | false
*/
public function getResponse() {
$query = ”;
if (sizeof($this->parameters) > 0) {
$query = substr($this->uri, -1) !== ‘?’ ? ‘?’ : ‘&’;
foreach ($this->parameters as $var => $value)
if ($value == null || $value == ”) $query .= $var.’&’;
else $query .= $var.’=’.$value.’&’;
$query = substr($query, 0, -1);
$this->uri .= $query;
if (isset($this->parameters['acl']) || !isset($this->parameters['logging']))
$this->resource .= $query;
}
$url = (extension_loaded(‘openssl’)?’https://&#8217;:’http://&#8217;).$this->headers['Host'].$this->uri;
//var_dump($this->bucket, $this->uri, $this->resource, $url);

// Basic setup
$curl = curl_init();
curl_setopt($curl, CURLOPT_USERAGENT, ‘S3/php’);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($curl, CURLOPT_URL, $url);

// Headers
$headers = array(); $amz = array();
foreach ($this->amzHeaders as $header => $value)
if (strlen($value) > 0) $headers[] = $header.’: ‘.$value;
foreach ($this->headers as $header => $value)
if (strlen($value) > 0) $headers[] = $header.’: ‘.$value;
foreach ($this->amzHeaders as $header => $value)
if (strlen($value) > 0) $amz[] = strToLower($header).’:’.$value;
$amz = (sizeof($amz) > 0) ? “\n”.implode(“\n”, $amz) : ”;

// Authorization string
$headers[] = ‘Authorization: ‘ . S3::__getSignature(
$this->verb.”\n”.
$this->headers['Content-MD5'].”\n”.
$this->headers['Content-Type'].”\n”.
$this->headers['Date'].$amz.”\n”.$this->resource
);

curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, false);
curl_setopt($curl, CURLOPT_WRITEFUNCTION, array(&$this, ‘__responseWriteCallback’));
curl_setopt($curl, CURLOPT_HEADERFUNCTION, array(&$this, ‘__responseHeaderCallback’));

// Request types
switch ($this->verb) {
case ‘GET’: break;
case ‘PUT’:
if ($this->fp !== false) {
curl_setopt($curl, CURLOPT_PUT, true);
curl_setopt($curl, CURLOPT_INFILE, $this->fp);
if ($this->size > 0)
curl_setopt($curl, CURLOPT_INFILESIZE, $this->size);
} elseif ($this->data !== false) {
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, ‘PUT’);
curl_setopt($curl, CURLOPT_POSTFIELDS, $this->data);
if ($this->size > 0)
curl_setopt($curl, CURLOPT_BUFFERSIZE, $this->size);
} else
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, ‘PUT’);
break;
case ‘HEAD’:
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, ‘HEAD’);
curl_setopt($curl, CURLOPT_NOBODY, true);
break;
case ‘DELETE’:
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, ‘DELETE’);
break;
default: break;
}

// Execute, grab errors
if (curl_exec($curl))
$this->response->code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
else
$this->response->error = array(
‘code’ => curl_errno($curl),
‘message’ => curl_error($curl),
‘resource’ => $this->resource
);

@curl_close($curl);

// Parse body into XML
if ($this->response->error === false && isset($this->response->headers['type']) &&
$this->response->headers['type'] == ‘application/xml’ && isset($this->response->body)) {
$this->response->body = simplexml_load_string($this->response->body);

// Grab S3 errors
if (!in_array($this->response->code, array(200, 204)) &&
isset($this->response->body->Code, $this->response->body->Message)) {
$this->response->error = array(
‘code’ => (string)$this->response->body->Code,
‘message’ => (string)$this->response->body->Message
);
if (isset($this->response->body->Resource))
$this->response->error['resource'] = (string)$this->response->body->Resource;
unset($this->response->body);
}
}

// Clean up file resources
if ($this->fp !== false && is_resource($this->fp)) fclose($this->fp);

return $this->response;
}

/**
* CURL write callback
*
* @param resource &$curl CURL resource
* @param string &$data Data
* @return integer
*/
private function __responseWriteCallback(&$curl, &$data) {
if ($this->response->code == 200 && $this->fp !== false)
return fwrite($this->fp, $data);
else
$this->response->body .= $data;
return strlen($data);
}

/**
* CURL header callback
*
* @param resource &$curl CURL resource
* @param string &$data Data
* @return integer
*/
private function __responseHeaderCallback(&$curl, &$data) {
if (($strlen = strlen($data)) <= 2) return $strlen;
if (substr($data, 0, 4) == ‘HTTP’)
$this->response->code = (int)substr($data, 9, 3);
else {
list($header, $value) = explode(‘: ‘, trim($data));
if ($header == ‘Last-Modified’)
$this->response->headers['time'] = strtotime($value);
elseif ($header == ‘Content-Length’)
$this->response->headers['size'] = (int)$value;
elseif ($header == ‘Content-Type’)
$this->response->headers['type'] = $value;
elseif ($header == ‘ETag’)
$this->response->headers['hash'] = substr($value, 1, -1);
elseif (preg_match(‘/^x-amz-meta-.*$/’, $header))
$this->response->headers[$header] = is_numeric($value) ? (int)$value : $value;
}
return $strlen;
}

}
?>

vi style.css

@charset “utf-8″;
/* CSS Document */

body{
background-color: #e9e7e0;
}

*{
font-family: Arial, Helvetica, sans-serif;
font-size: 11px;
}

h1{
color: #56958b;
font-size: 14px;
font-weight: bold;
}

a{
color: #56958b;
}

a:hover{
color: #ffffff;
background-color: #56958b;
}

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About tapasmishra
Loves to work on Open Source platforms :D..

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