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lib/ckeditor4/plugins/uploadcare/README.md

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+# Uploadcare CKEDITOR Plugin
+
+This is a plugin for [CKEDITOR][4] to work with [Uploadcare][1].
+
+It's based on a [uploadcare-php][3] library.
+
+## Requirements
+
+- CKEDITOR 4.0+
+
+## Optional for PHP version.
+
+- [iframedialog][5] plugin for CKEDITOR
+- PHP 5.2+
+- php-curl
+
+**Note!** PHP implementation is optional by now and we higly recommend not to use it.
+
+## Install
+
+**Warning**: You **must** enable "Automatic file storing" in your account settings.
+Please follow https://uploadcare.com/accounts/settings/ to enable feature.
+
+Clone plugin from git to your plugins directory:
+
+    git clone git://github.com/uploadcare/uploadcare-ckeditor.git plugins/uploadcare --recursive
+
+Initialize a CKEDITOR plugin with additional params:
+
+    <script>
+      UPLOADCARE_PUBLIC_KEY = "demopublickey"; //set publick key for Uploadcare
+      UPLOADCARE_LOCALE = 'ru'; //set locale if you wish
+      CKEDITOR.replace( 'editor1', {
+        extraPlugins: 'uploadcare', // this will enable plugin
+        toolbar: [
+          [ 'Bold', 'Italic', '-', 'NumberedList', 'BulletedList', '-', 'Link', 'Unlink', '-', 'Uploadcare' ]
+        ]
+      });
+
+    </script>
+
+## PHP (Optional)
+
+Install iframedialog plugin.
+
+Find a "config.php" file inside plugin directory and edit it:
+
+    <?php
+    define('UC_PUBLIC_KEY', 'demopublickey');
+    define('UC_SECRET_KEY', 'demoprivatekey');
+
+Initialize a CKEDITOR plugin:
+
+    <script>
+      UPLOADCARE_PUBLIC_KEY = "demopublickey"; //set publick key for Uploadcare
+      UPLOADCARE_LOCALE = 'ru'; //set locale if you wish
+      CKEDITOR.replace( 'editor1', {
+        extraPlugins: 'uploadcare,iframedialog', // this will enable plugin. Iframedialog must be enabled in this case!
+        USE_PHP: true, //this will enable outdated PHP dialog
+        toolbar: [
+          [ 'Bold', 'Italic', '-', 'NumberedList', 'BulletedList', '-', 'Link', 'Unlink', '-', 'Uploadcare' ]
+        ]
+      });
+
+    </script>
+
+PHP Version provides an outdated custom dialog. This dialog is used to store files and images and
+provides some additional image operations.
+
+## Usage
+
+### if USE_PHP = false
+
+1. Press "Uploadcare" button.
+2. Select a file to upload and press "Upload"
+3. Wait for file to be uploaded.
+4. Crop an image as you wish.
+5. Press "Upload" again. A cropped image will be available inside editor.
+
+### If USE_PHP = true
+
+1. Press "Uploadcare" button.
+2. Select a file to upload.
+3. Wait for file to be uploaded. An "Uploadcare" icon will show upload progress.
+4. Change any parameters you like.
+5. Press "Insert" and an image will be available inside editor.
+
+[1]: http://uploadcare.com/
+[2]: https://uploadcare.com/documentation/reference/basic/cdn.html
+[3]: https://github.com/uploadcare/uploadcare-php
+[4]: http://www.ckeditor.com
+[5]: http://www.ckeditor.com/addon/iframedialog

lib/ckeditor4/plugins/uploadcare/config.php

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+<?php
+define('UC_PUBLIC_KEY', 'demopublickey');
+define('UC_SECRET_KEY', 'demoprivatekey');

lib/ckeditor4/plugins/uploadcare/dialog.php

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+<?php
+error_reporting(E_ERROR);
+include dirname(__FILE__).'/config.php';
+include dirname(__FILE__).'/uploadcare-php/uploadcare/lib/5.2/Uploadcare.php';
+
+$public_key = UC_PUBLIC_KEY;
+$secret_key = UC_SECRET_KEY;
+$api = new Uploadcare_Api($public_key, $secret_key);
+
+$editor_name = $_REQUEST['editor_name'];
+
+//POST
+$file = null;
+$scale_crop_default_width = 800;
+$scale_crop_default_height = 634;
+if ($_POST['save']) {
+	$file_id = $_POST['file_id'];
+	$file = $api->getFile($file_id);
+	$file->scaleCrop($scale_crop_default_width, $scale_crop_default_height);
+	$file->op('stretch/off');
+	$file->store();
+}
+if ($_GET['file_id']) {
+	$file_id = $_GET['file_id'];
+	$file = $api->getFile($file_id);
+	$file->scaleCrop($scale_crop_default_width, $scale_crop_default_height);
+	$file->op('stretch/off');
+	$file->store();
+}
+$is_insert = false;
+$is_preview = false;
+if ($_POST['insert'] or $_POST['_preview']) {
+	$file_id = $_POST['file_id'];
+	$file = $api->getFile($file_id);
+	$original = clone $file;
+
+	if (isset($_POST['crop'])) {
+		$crop_width = $_POST['crop_width'];
+		$crop_height = $_POST['crop_height'];
+		$crop_center = isset($_POST['crop_center']) ? true : false;
+		$crop_fill_color = $_POST['crop_fill_color'];
+		$file = $file->crop($crop_width, $crop_height, $crop_center, $crop_fill_color);
+	}
+
+	if (isset($_POST['resize'])) {
+		$resize_width = $_POST['resize_width'];
+		$resize_height = $_POST['resize_height'];
+		$file = $file->resize($resize_width, $resize_height);
+	}
+
+	if (isset($_POST['scale_crop'])) {
+		$scale_crop_width = $_POST['scale_crop_width'];
+		$scale_crop_height = $_POST['scale_crop_height'];
+		$scale_crop_center = isset($_POST['scale_crop_center']) ? true : false;
+		$file = $file->scaleCrop($scale_crop_width, $scale_crop_height, $scale_crop_center);
+	} else {
+		$scale_crop_width = $scale_crop_default_width;
+		$scale_crop_height = $scale_crop_default_height;
+		$scale_crop_center = false;
+	}
+
+	if (isset($_POST['effect_flip'])) {
+		$file = $file->effect('flip');
+	}
+
+	if (isset($_POST['effect_grayscale'])) {
+		$file = $file->effect('grayscale');
+	}
+
+	if (isset($_POST['effect_invert'])) {
+		$file = $file->effect('invert');
+	}
+
+	if (isset($_POST['effect_mirror'])) {
+		$file = $file->effect('mirror');
+	}
+
+	if (isset($_POST['stretch_off'])) {
+		$file->op('stretch/off');
+	}
+
+	$is_insert = true;
+
+	if ($_POST['_preview']) {
+		$is_insert = false;
+		$is_preview = true;
+	}
+}
+
+?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+	<title>Uploadcare</title>
+</head>
+<body>
+<script type="text/javascript" src="http://www.google.com/jsapi"></script>
+<script type="text/javascript">
+        google.load("jquery", "1.7");
+</script>
+<?php if ($is_preview): ?>
+<?php echo $file->getImgTag($file->data['original_filename']); ?>
+<?php die();?>
+<?php endif;?>
+<?php if ($is_insert): ?>
+<script type="text/javascript">
+/* <![CDATA[ */
+window.parent.CKEDITOR.instances['<?php echo $editor_name; ?>'].insertHtml('<?php echo $file->getImgTag(); ?>');
+window.parent.CKEDITOR.dialog.getCurrent().hide()
+/* ]]> */
+</script>
+<?php die();?>
+<?php endif;?>
+
+<?php if ($file): ?>
+<div id="media-items">
+<div class="media-item">
+<form enctype="multipart/form-data" method="post" action="" id="uploadcare_form">
+	<input type="hidden" name="file_id" id="file_id" value="<?php echo $file_id; ?>" />
+	<input type="hidden" name="editor_name" id="editor_name" value="<?php echo $editor_name; ?>" />
+
+
+	<table class="slidetoggle describe startclosed" style="display: table;">
+		<thead class="media-item-info">
+		<tr>
+			<td colspan="2">
+				<p><strong>File name:</strong> <?php echo $file->data['original_filename']; ?></p>
+				<p><strong>File type:</strong> <?php echo $file->data['mime_type']; ?></p>
+				<p><strong>Upload date:</strong> <?php echo $file->data['upload_date']; ?></p>
+			</td>
+		</tr>
+		</thead>
+		<tbody>
+
+			<tr align="left">
+				<td colspan="2"><input type="checkbox" name="crop" id="crop" />&nbsp;<strong><label for="crop">Crop</label></strong></td>
+			</tr>
+			<tr align="left"><th class="label"><label for="crop_width">Width:</label></th><td><input type="text" name="crop_width" id="crop_width" /></td></tr>
+			<tr align="left"><th class="label"><label for="crop_height">Height:</label></th><td><input type="text" name="crop_height" id="crop_height" /></td></tr>
+			<tr align="left"><th class="label"><label for="crop_center">Center:</label></th><td><input type="checkbox" name="crop_center" id="crop_center" /></td></tr>
+			<tr align="left"><th class="label"><label for="crop_fill_color">Fill color:</label></th><td><input type="text" name="crop_fill_color" id="crop_fill_color" /></td></tr>
+
+			<tr align="left">
+				<td colspan="2"><input type="checkbox" name="resize" id="resize" />&nbsp;<strong><label for="resize">Resize</label></strong></td>
+			</tr>
+			<tr align="left"><th class="label"><label for="resize_width">Width:</label></th><td><input type="text" name="resize_width" id="resize_width" /></td></tr>
+			<tr align="left"><th class="label"><label for="resize_height">Height:</label></th><td><input type="text" name="resize_height" id="resize_height" /></td></tr>
+
+			<tr align="left">
+				<td colspan="2"><input type="checkbox" name="scale_crop" checked="checked" id="scale_crop" />&nbsp;<strong><label for="scale_crop">Scale crop</label></strong></td>
+			</tr>
+			<tr align="left"><th class="label"><label for="scale_crop_width">Width:</label></th><td><input type="text" name="scale_crop_width" id="scale_crop_width" value="<?php echo $scale_crop_default_width;?>" /></td></tr>
+			<tr align="left"><th class="label"><label for="scale_crop_height">Height:</label></th><td><input type="text" name="scale_crop_height" id="scale_crop_height" value="<?php echo $scale_crop_default_height; ?>" /></td></tr>
+			<tr align="left"><th class="label"><label for="scale_crop_center">Center:</label></th><td><input type="checkbox" name="scale_crop_center" id="scale_crop_center" checked="checked"/></td></tr>
+
+			<tr align="left">
+				<td colspan="2"><strong>Effects</strong></td>
+			</tr>
+			<tr align="left"><th class="label" colspan="2"><input type="checkbox" name="effect_flip" id="effect_flip" />&nbsp;<label for="effect_flip">Flip</label></th></tr>
+			<tr align="left"><th class="label" colspan="2"><input type="checkbox" name="effect_grayscale" id="effect_grayscale" />&nbsp;<label for="effect_grayscale">Grayscale</label></th></tr>
+			<tr align="left"><th class="label" colspan="2"><input type="checkbox" name="effect_invert" id="effect_invert" />&nbsp;<label for="effect_invert">Invert</label></th></tr>
+			<tr align="left"><th class="label" colspan="2"><input type="checkbox" name="effect_mirror" id="effect_mirror" />&nbsp;<label for="effect_mirror">Mirror</label></th></tr>
+			<tr align="left"><th class="label" colspan="2"><input type="checkbox" name="stretch_off" id="stretch_off" checked="checked" />&nbsp;<label for="stretch">Stretch Off?</label></th></tr>
+
+
+			<tr valign="top">
+				<td class="A1B1" colspan="2">
+					<p><strong>Preview:</strong></p>
+					<div id="uploadcare_preview" style="width: 750px; overflow-x: scroll;">
+						<?php echo $file->getImgTag($file->data['original_filename']); ?>
+					</div>
+				</td>
+			</tr>
+
+		</tbody>
+		</table>
+		<input type="submit" value="Insert" name="insert" class="cke_dialog_ui_button" />
+</form>
+</div>
+</div>
+<script type="text/javascript">
+jQuery(function() {
+	jQuery('#uploadcare_form :input').change(function() {
+		var form = jQuery('#uploadcare_form');
+		var data = form.serialize();
+		data += '&_preview=true';
+		jQuery.post(
+				form.attr('action'),
+				data,
+				function (html) {
+					jQuery('#uploadcare_preview').html(html);
+				}
+		);
+		return false;
+	});
+});
+</script>
+<?php else: ?>
+<?php echo $api->widget->getScriptTag(); ?>
+<form enctype="multipart/form-data" method="post" action="" id="uploadcare_form">
+	<input type="hidden" name="editor_name" id="editor_name" value="<?php echo $editor_name; ?>" />
+	<h3 class="media-title">Use Uploadcare widget to upload file.</h3>
+	<?php echo $api->widget->getInputTag('file_id'); ?>
+	<p class="savebutton ml-submit">
+	<input type="submit" value="Store File" name="save" class="cke_dialog_ui_button" />
+	</p>
+</form>
+
+<script type="text/javascript">
+jQuery(function() {
+	jQuery('#uploadcare_form').submit(function() {
+		var form = jQuery(this);
+		var file_id = form.find('input[name=file_id]').val();
+		if (!file_id) {
+			return false;
+		}
+	});
+});
+</script>
+<?php endif; ?>
+</body>
+</html>

lib/ckeditor4/plugins/uploadcare/plugin.js

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+UPLOADCARE_CROP = true;
+
+CKEDITOR.plugins.add('uploadcare', {
+    init : function(editor) {
+        var me = this;
+        var _file_id;
+
+        UPLOADCARE_CROP = !editor.config.USE_PHP;
+        UPLOADCARE_AUTOSTORE = !editor.config.USE_PHP;
+        CKEDITOR.scriptLoader.load('https://ucarecdn.com/widget/0.8.1.2/uploadcare/uploadcare-0.8.1.2.min.js');
+
+        editor.addCommand('uploadcareDialog', new CKEDITOR.dialogCommand('uploadcareDialog'));
+
+        editor.addCommand('showUploadcareDialog', {
+		    allowedContent: 'img',
+			requiredContent: 'img',
+            exec : function() {
+                var dialog = uploadcare.openDialog().done(function(file) {
+                    file.done(function(fileInfo) {
+                        _file_id = fileInfo.uuid;
+                        dialog_path = me.path + 'dialog.php?file_id=' + _file_id;
+                        url = fileInfo.cdnUrl;
+                        if (editor.config.USE_PHP) {
+                            editor.execCommand('uploadcareDialog', true);
+                        } else {
+                            if (fileInfo.isImage) {
+                                editor.insertHtml('<img src="'+url+'" />', 'unfiltered_html');
+                            } else {
+                                editor.insertHtml('<a href="'+url+'">'+fileInfo.name+'</a>', 'unfiltered_html');
+                            }
+                        }
+                    });
+                });
+            }
+        });
+
+        editor.ui.addButton('Uploadcare', {
+            label : 'Uploadcare',
+            toolbar : 'insert',
+            command : 'showUploadcareDialog',
+            icon : this.path + 'images/logo.png',
+		    allowedContent: 'img[alt,dir,id,lang,longdesc,!src,title]{*}(*)',
+			requiredContent: 'img[alt,src]'
+        });
+
+        CKEDITOR.dialog.add('uploadcareDialog', function() {
+            return {
+                title : 'Uploadcare',
+                minWidth : 800,
+                minHeight : 600,
+                onShow : function() {
+                    document.getElementById(this.getButton('ok').domId).style.display = 'none';
+                },
+                contents : [ {
+                    id : 'iframe',
+                    label : 'Uploadcare',
+                    expand : false,
+                    elements : [ {
+                        type : 'iframe',
+                        src : me.path + 'dialog.php?file_id=' + _file_id,
+                        width : '800',
+                        height : '600',
+                        onContentLoad : function() {
+                            var iframe = document.getElementById(this._.frameId), iframeWindow = iframe.contentWindow;
+                            if (iframeWindow.document.getElementById('editor_name')) {
+                                iframeWindow.document.getElementById('editor_name').value = editor.name;
+                            }
+                        }
+                    } ]
+                } ]
+            };
+        });
+    }
+});

lib/ckeditor4/plugins/uploadcare/uploadcare-php/README.md

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+# Uploadcare PHP
+
+This is a set of libraries to work with [Uploadcare][1].
+
+## Install
+
+**Note**: php-curl must be installed.
+
+Just clone source code anywhere you like inside your project:
+
+    git clone git://github.com/uploadcare/uploadcare-php.git
+
+If you like, define some constants with Public and Secret keys within your project:
+
+    define('UC_PUBLIC_KEY', 'demopublickey');
+    define('UC_SECRET_KEY', 'demoprivatekey');
+
+If you are using PHP 5.3+ or 5.4+ it will be much better to use library with namespaces.
+Just include one file to start using Uploadcare inside your PHP project and use namespace "\Uploadcare":
+
+    require_once '../uploadcare/lib/5.3-5.4/Uploadcare.php';
+    use \Uploadcare;
+
+If you are using PHP 5.2+, then you should include Uploadcare PHP libraries like this:
+
+    require_once '../uploadcare/lib/5.2/Uploadcare.php';
+
+Now, we are ready. Create an object of Uploadcare\Api class:
+
+    $api = new Uploadcare\Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+
+For PHP 5.2 it will be:
+
+    $api = new Uploadcare_Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+
+This is a main object your should work with. It has everything you need.
+
+## Widgets and simple example
+
+Let's start with widgets.
+
+If you want to get Javascript's url for widget, just call:
+
+    print $api->widget->getScriptSrc()
+
+You can easily get all contents and <script> sections to include in your HTML:
+
+    <head>
+    <?php print $api->widget->getScriptTag(); ?>
+    </head>
+
+Create some form to use with widget:
+
+    <form method="POST" action="upload.php">
+      <?php echo $api->widget->getInputTag('qs-file'); ?>
+      <input type="submit" value="Save!" />
+     </form>
+
+You will see an Uploadcare widget. After selecting file the "file_id" parameter will be set as value of hidden field.
+
+The last thing left is to store file:
+
+    $file_id = $_POST['qs-file'];
+    $api = new Uploadcare\Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+    $file = $api->getFile($file_id);
+    $file->store();
+
+Now you have an Uploadcare\File object to work with. You can show an image like this:
+
+    <img src="<?php echo $file->getUrl(); ?>" />
+
+Or just:
+
+    <img src="<?php echo $file; ?>" />
+
+Or you can even call a getImgTag method. This will return a prepared <img> tag:
+
+    echo $file->getImgTag('image.jpg', array('alt' => 'Image'));
+
+## API and requests
+
+You can do any simple request if you like by calling:
+
+    $api->request($method, $path, $data = array(), $headers = array());
+
+Don't forget, that each API url has it's own allowed methods.
+
+If method is not allowed exceptions will be thrown.
+
+Ok, lets do some requests. This is request to index (http://api.uploadcare.com).
+
+This will return an stdClass with information about urls you can request.
+
+This is not really valuable data.
+
+    $data = $api->request('GET', '/');
+
+Lets request account info.
+
+This will return just some essential data inside stdClass such as: username, pub_key and email
+
+    $account_data = $api->request('GET', '/account/');
+
+Now lets get file list.
+
+This request will return stdClass with all files uploaded and some information about files.
+
+Each files has:
+
+- size
+- upload_date
+- last_keep_claim
+- on_s3
+- made_public
+- url
+- is_image
+- file_id
+- original_filename
+- removed
+- mime_type
+- original_file_url
+
+
+    $files_raw = $api->request('GET', '/files/');
+
+
+Previous request is just some raw request and it will return raw data from json.
+
+There's a better way to handle all the files by using method below.
+
+It will return an array of \Uploadcare\File objects to work with.
+
+This objects provide ways to display the file and to use methods such as resize, crop, etc
+
+    $files = $api->getFileList();
+
+getFileList called without any params will return just an array of first 20 files objects (first page).
+
+But you can supply a page you want to see:
+
+    $page = 2;
+    $files = $api->getFileList($page);
+
+You can get some information about pagination.
+
+You will get an array with params:
+
+- page: current page
+- next: uri to request next page
+- per_page: number of files per page
+- pages: number of pages
+- previous: uri to request previous page
+
+Use "per_page" and "pages" information to create pagination inside your own project
+
+    $pagination_info = $api->getFilePaginationInfo();
+
+If you have a file_id (for example, it's saved in your database) you can create object for file easily.
+
+Just use request below:
+
+    $file_id = '5255b9dd-f790-425e-9fa9-8b49d4e64643';
+    $file = $api->getFile($file_id);
+
+You can access raw data like this:
+
+    $file->data['size'];
+
+Trying to access "data" parameter will fire GET request to get all that data once.
+It will be a cached array if you will try to access "data" parameter again.
+
+## File operations
+
+Using object of \Uploadcare\File class we can get url for the file
+
+    echo $file->getUrl();
+
+Now let's do some crop.
+
+    $width = 400;
+    $height = 400;
+    $is_center = true;
+    $fill_color = 'ff0000';
+    echo $file->crop($width, $height, $is_center, $fill_color)->getUrl();
+
+And here's some resize with width and height
+
+    echo $file->resize($width, $height)->getUrl();
+
+Width only
+
+    echo $file->resize($width)->getUrl();
+
+Height only
+
+    echo $file->resize(false, $height)->getUrl();
+
+We can also use scale crop
+
+    echo $file->scaleCrop($width, $height, $is_center)->getUrl();
+
+And we can apply some effects.
+
+    echo $file->effect('flip')->getUrl();
+    echo $file->effect('grayscale')->getUrl();
+    echo $file->effect('invert')->getUrl();
+    echo $file->effect('mirror')->getUrl();
+
+We can apply more than one effect!
+
+    echo $file->effect('flip')->effect('invert')->getUrl();
+
+We can combine operations, not just effects.
+
+Just chain methods and finish but calling "getUrl()".
+
+    echo $file->resize(false, $height)->crop(100, 100)->effect('flip')->effect('invert')->getUrl();
+
+getUrl() returns a string with the resulting URL.
+
+However, it's optional – the object itself becomes a string when treated as such.
+
+An example below will print an url too:
+
+    echo $file->resize(false, $height)->crop(100, 100)->effect('flip')->effect('invert');
+
+The way you provide operations matters.
+
+We can see the same operations below, but result will be a little bit different because of order:
+
+    echo $file->crop(100, 100)->resize(false, $height)->effect('flip')->effect('invert')->getUrl();
+
+You can run any custom operations like this:
+
+    echo $file->op('effect/flip');
+    echo $file->op('resize/400x400')->op('effect/flip');
+
+You can call getUrl with postfix parameter. This is will add some readable postfix.
+
+    echo $file->getUrl('image.jpg');
+
+The result will be like this one:
+
+    http://ucarecdn.com/85b5644f-e692-4855-9db0-8c5a83096e25/-/crop/970x500/center/he.jpg
+
+[More information on file operations can be found here][2]
+
+## Uploading files
+Let's have some fun with uploading files.
+
+First of all, we can upload file from url. Just use construction below.
+
+This will return Uploadcare\File instance.
+
+    $file = $api->uploader->fromUrl('http://www.baysflowers.co.nz/Images/tangerine-delight.jpg');
+    $file->store();
+
+By using default params of "fromUrl" method you tell Uploader to check file to be uploaded.
+
+By default, Uploader will make 5 checks max with 1 second wait. You can change these params:
+
+    $file = $api->uploader->fromUrl('http://www.baysflowers.co.nz/Images/tangerine-delight.jpg', true, $timeout, $max_attempts);
+
+If file is not uploaded an Exception will be thrown.
+
+You can just get token and check status manually later any time:
+
+    $token = $api->uploader->fromUrl('http://www.baysflowers.co.nz/Images/tangerine-delight.jpg', false);
+    $data = $api->uploader->status($token);
+    if ($data->status == 'success') {
+      $file_id = $data->file_id
+      // do smth with a file
+    }
+
+You can do any operations with this file now.
+
+    echo $file->effect('flip')->getUrl();
+
+You can upload file from path.
+
+    $file = $api->uploader->fromPath(dirname(__FILE__).'/test.jpg');
+    $file->store();
+    echo $file->effect('flip')->getUrl();
+
+Or even just use a file pointer.
+
+    $fp = fopen(dirname(__FILE__).'/test.jpg', 'r');
+    $file = $api->uploader->fromResource($fp);
+    $file->store();
+    echo $file->effect('flip')->getUrl();
+
+The last thing you can do is upload a file just from it's contents. But you will have to provide mime-type.
+
+    $content = "This is some text I want to upload";
+    $file = $api->uploader->fromContent($content, 'text/plain');
+    $file->store();
+    echo $file->getUrl();
+
+If you want to delete file, just call delete() method on Uploadcare\File object.
+
+    $file->delete();
+
+## Tests
+
+Inside "tests" directory you can find test for PHP 5.2 and PHP 5.3.
+
+This tests are based on PHPUnit, so you must have PHPUnit installed on your system to use them.
+
+To execute tests just run this for PHP 5.3:
+
+    cd tests/5.3/
+    phpunit ApiTest.php
+
+or for PHP 5.2:
+
+    cd tests/5.2/
+    phpunit ApiTest.php
+
+ApiTest is divided is sections/methods.
+
+Here's descriptions of methods:
+
+### testConstantValid
+
+Just some basic unit test to test, that constants are not misspelled.
+
+### testChildObjectsValid
+
+Test that Api object has proper child objects.
+
+### testPublicKeyValid
+
+Test for public key is correct.
+
+### testFileList
+
+Test that getFilesList mehtod returns array and each item of array is an object of Uploadcare\File class
+
+### testRequestsRaw
+
+Test different request types to url https://api.uploadcare.com/.
+
+Some requests must throw an exception, some must not.
+
+Checks for some result returned.
+
+### testRequestsAccount
+
+The same as "testRequestsRaw" but with https://api.uploadcare.com/account/ url.
+
+### testRequestsFiles
+
+Makes raw request to get an array of files.
+
+Check's if each file has essentials parameters.
+
+### testFile
+
+Tests Uploadcare\File object to work correctly.
+
+Test runs different operations and checks url is returned correctly for each of them.
+
+### testUploadAndDelete
+
+Tests all four types of uploading.
+
+None of them should throw exception while uplaoding and storing.
+
+Checks text file is uploaded correctly.
+
+Checks for file deletions. No exceptions must be thrown.
+
+[1]: https://uploadcare.com/
+[2]: https://uploadcare.com/documentation/reference/basic/cdn.html

lib/ckeditor4/plugins/uploadcare/uploadcare-php/sample-project/config.php

@@ -0,0 +1,3 @@
+<?php
+define('UC_PUBLIC_KEY', 'demopublickey');
+define('UC_SECRET_KEY', 'demoprivatekey');

lib/ckeditor4/plugins/uploadcare/uploadcare-php/sample-project/examples.php

@@ -0,0 +1,225 @@
+<?php
+/**
+ * Examples
+ */
+// This is just some config with public and secret keys for UC.
+require_once 'config.php';
+// requesting lib for PHP 5.3/5.4
+require_once '../uploadcare/lib/5.3-5.4/Uploadcare.php';
+// using namespace
+use \Uploadcare;
+
+// create object istance for Api.
+$api = new Uploadcare\Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+
+/**
+ * Let's start with widgets.
+ * You can get widget url by using this:
+* */
+print $api->widget->getScriptSrc()."\n";
+
+/**
+ * You can just use method below to get all the code to insert widget
+ */
+print $api->widget->getScriptTag()."\n";
+
+/**
+ * Ok, lets do some requests. This is request to index (http://api.uploadcare.com).
+ * This will return an stdClass with information about urls you can request.
+ */
+$data = $api->request('GET', '/');
+
+/**
+ * Ok, now lets get file list.
+ * This request will return stdClass with all files uploaded and some information about files.
+ * Each files has:
+ *  - size
+ *  - upload_date
+ *  - last_keep_claim
+ *  - on_s3
+ *  - made_public
+ *  - url
+ *  - is_image
+ *  - file_id
+ *  - original_filename
+ *  - removed
+ *  - mime_type
+ *  - original_file_url
+ *
+*/
+$files_raw = $api->request('GET', '/files/');
+
+/**
+ *  Previous request is just some raw request and it will return raw data from json.
+ *  There's a better way to handle all the files by using method below.
+ *  It will return an array of \Uploadcare\File objects to work with.
+ *
+ *  This objects don't provide all the data like in previous request, but provides ways to display the file
+ *  and to use methods such as resize, crop, etc
+*/
+$files = $api->getFileList();
+
+/**
+ * getFileList called without any params will return just an array of first 20 files objects (first page).
+ *
+ * But you can supply a page you want to see:
+*/
+$page = 2;
+$files = $api->getFileList($page);
+
+/**
+ * You can get some information about pagination.
+ *
+ * You will get an array with params:
+ * - page: current page
+ * - next: uri to request next page
+ * - per_page: number of files per page
+ * - pages: number of pages
+ * - previous: uri to request previous page
+ *
+ * Use "per_page" and "pages" information to create pagination inside your own project
+*/
+$pagination_info = $api->getFilePaginationInfo();
+
+/**
+ * If you have a file_id (for example, it's saved in your database) you can create object for file easily.
+ * Just user request below
+*/
+$file_id = '5255b9dd-f790-425e-9fa9-8b49d4e64643';
+$file = $api->getFile($file_id);
+
+/**
+ * Ok, using object of \Uploadcare\File class we can get url for the file
+*/
+echo $file->getUrl()."\n";
+
+/**
+ * Or even get an image tag
+ */
+echo $file->getImgTag('image.jpg', array('alt' => 'Somealt'))."\n";
+
+/**
+ * Now let's do some crop.
+ */
+$width = 400;
+$height = 400;
+$is_center = true;
+$fill_color = 'ff0000';
+echo $file->crop($width, $height, $is_center, $fill_color)->getUrl()."\n";
+
+/**
+ * And here's some resize with width and height
+ * */
+echo $file->resize($width, $height)->getUrl()."\n";
+
+/**
+ * Width only
+ */
+echo $file->resize($width)->getUrl()."\n";
+
+/**
+ * Height only
+ */
+echo $file->resize(false, $height)->getUrl()."\n";
+
+/**
+ * We can also use scale crop
+ */
+echo $file->scaleCrop($width, $height, $is_center)->getUrl()."\n";
+
+/**
+ * And we can apply some effects.
+ */
+echo $file->effect('flip')->getUrl()."\n";
+echo $file->effect('grayscale')->getUrl()."\n";
+echo $file->effect('invert')->getUrl()."\n";
+echo $file->effect('mirror')->getUrl()."\n";
+
+/**
+ * We can apply more that one effect!
+ * */
+echo  $file->effect('flip')->effect('invert')->getUrl()."\n";
+
+/**
+ * We can combine operations, not just effects.
+ *
+ * Just chain methods and finish but calling "getUrl()".
+ *
+ * */
+echo $file->resize(false, $height)->crop(100, 100)->effect('flip')->effect('invert')->getUrl()."\n";
+
+/**
+ * The way you provide operations matters.
+ * We can see the same operations below, but result will be a little bit different.
+ */
+echo $file->crop(100, 100)->resize(false, $height)->effect('flip')->effect('invert')->getUrl()."\n";
+
+/**
+ * You can run any custom operations like this:
+ */
+echo $file->op('effect/flip')."\n";
+echo $file->op('resize/400x400')->op('effect/flip')."\n";
+
+/**
+ * You can call getUrl with postfix parameter. This is will add some readable postfix.
+ */
+echo $file->getUrl('image.jpg')."\n";
+
+/**
+ * You can find more about operations here:
+ * https://uploadcare.com/documentation/reference/basic/cdn.html
+ */
+
+/**
+ * Ok, it's everything with operations.
+ * Let's have some fun with uploading files.
+ * First of all, we can upload file from url. Just use construction below.
+ * This will return File instance.
+ */
+$file = $api->uploader->fromUrl('http://www.baysflowers.co.nz/Images/tangerine-delight.jpg');
+
+/**
+ * File must be uploaded, but it's not stored yet.
+ * Let's store it.
+ * We user true flag to be sure that file is uploaded.
+**/
+try {
+  $file->store(true);
+} catch (Exception $e) {
+  echo $e->getMessage()."\n";
+  echo nl2br($e->getTraceAsString())."\n";
+}
+
+/**
+ * We can do any operations with this file now.
+ **/
+echo $file->effect('flip')->getUrl()."\n";
+
+/**
+ * We can upload file from path
+ * */
+$file = $api->uploader->fromPath(dirname(__FILE__).'/test.jpg');
+$file->store();
+echo $file->effect('flip')->getUrl()."\n";
+
+/**
+ * Or even just use a file pointer.
+ **/
+$fp = fopen(dirname(__FILE__).'/test.jpg', 'r');
+$file = $api->uploader->fromResource($fp);
+$file->store();
+echo $file->effect('flip')->getUrl()."\n";
+
+/**
+ * The last thing you can do is upload a file just from it's contents. But you will have to provide
+ * mime-type.
+ */
+$content = "This is some text I want to upload";
+$file = $api->uploader->fromContent($content, 'text/plain');
+$file->store();
+echo $file->getUrl()."\n";
+
+/**
+ * Lets delete the last file.
+ */
+$file->delete();

lib/ckeditor4/plugins/uploadcare/uploadcare-php/sample-project/examples52.php

@@ -0,0 +1,221 @@
+<?php
+// This is just some config with public and secret keys for UC.
+require_once 'config.php';
+// requesting lib for PHP 5.2
+require_once '../uploadcare/lib/5.2/Uploadcare.php';
+// using namespace
+
+// create object istance for Api.
+$api = new Uploadcare_Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+
+/**
+ * Let's start with widgets.
+ * You can get widget url by using this:
+* */
+print $api->widget->getScriptSrc()."\n";
+
+/**
+ * You can just use method below to get all the code to insert widget
+ */
+print $api->widget->getScriptTag()."\n";
+
+/**
+ * Ok, lets do some requests. This is request to index (http://api.uploadcare.com).
+ * This will return an stdClass with information about urls you can request.
+ */
+$data = $api->request('GET', '/');
+
+/**
+ * Ok, now lets get file list.
+ * This request will return stdClass with all files uploaded and some information about files.
+ * Each files has:
+ *  - size
+ *  - upload_date
+ *  - last_keep_claim
+ *  - on_s3
+ *  - made_public
+ *  - url
+ *  - is_image
+ *  - file_id
+ *  - original_filename
+ *  - removed
+ *  - mime_type
+ *  - original_file_url
+ *
+*/
+$files_raw = $api->request('GET', '/files/');
+
+/**
+ *  Previous request is just some raw request and it will return raw data from json.
+ *  There's a better way to handle all the files by using method below.
+ *  It will return an array of \Uploadcare\File objects to work with.
+ *
+ *  This objects don't provide all the data like in previous request, but provides ways to display the file
+ *  and to use methods such as resize, crop, etc
+*/
+$files = $api->getFileList();
+
+/**
+ * getFileList called without any params will return just an array of first 20 files objects (first page).
+ *
+ * But you can supply a page you want to see:
+*/
+$page = 2;
+$files = $api->getFileList($page);
+
+/**
+ * You can get some information about pagination.
+ *
+ * You will get an array with params:
+ * - page: current page
+ * - next: uri to request next page
+ * - per_page: number of files per page
+ * - pages: number of pages
+ * - previous: uri to request previous page
+ *
+ * Use "per_page" and "pages" information to create pagination inside your own project
+*/
+$pagination_info = $api->getFilePaginationInfo();
+
+/**
+ * If you have a file_id (for example, it's saved in your database) you can create object for file easily.
+ * Just user request below
+*/
+$file_id = '5255b9dd-f790-425e-9fa9-8b49d4e64643';
+$file = $api->getFile($file_id);
+
+/**
+ * Ok, using object of \Uploadcare\File class we can get url for the file
+*/
+echo $file->getUrl()."\n";
+
+/**
+ * Or even get an image tag
+ */
+echo $file->getImgTag('image.jpg', array('alt' => 'Somealt'))."\n";
+
+/**
+ * Now let's do some crop.
+ */
+$width = 400;
+$height = 400;
+$is_center = true;
+$fill_color = 'ff0000';
+echo $file->crop($width, $height, $is_center, $fill_color)->getUrl()."\n";
+
+/**
+ * And here's some resize with width and height
+ * */
+echo $file->resize($width, $height)->getUrl()."\n";
+
+/**
+ * Width only
+ */
+echo $file->resize($width)->getUrl()."\n";
+
+/**
+ * Height only
+ */
+echo $file->resize(false, $height)->getUrl()."\n";
+
+/**
+ * We can also use scale crop
+ */
+echo $file->scaleCrop($width, $height, $is_center)->getUrl()."\n";
+
+/**
+ * And we can apply some effects.
+ */
+echo $file->effect('flip')->getUrl()."\n";
+echo $file->effect('grayscale')->getUrl()."\n";
+echo $file->effect('invert')->getUrl()."\n";
+echo $file->effect('mirror')->getUrl()."\n";
+
+/**
+ * We can apply more that one effect!
+ * */
+echo  $file->effect('flip')->effect('invert')->getUrl()."\n";
+
+/**
+ * We can combine operations, not just effects.
+ *
+ * Just chain methods and finish but calling "getUrl()".
+ *
+ * */
+echo $file->resize(false, $height)->crop(100, 100)->effect('flip')->effect('invert')->getUrl()."\n";
+
+/**
+ * The way you provide operations matters.
+ * We can see the same operations below, but result will be a little bit different.
+ */
+echo $file->crop(100, 100)->resize(false, $height)->effect('flip')->effect('invert')->getUrl()."\n";
+
+/**
+ * You can run any custom operations like this:
+ */
+echo $file->op('effect/flip')."\n";
+echo $file->op('resize/400x400')->op('effect/flip')."\n";
+
+/**
+ * You can call getUrl with postfix parameter. This is will add some readable postfix.
+ */
+echo $file->getUrl('image.jpg')."\n";
+
+/**
+ * You can find more about operations here:
+ * https://uploadcare.com/documentation/reference/basic/cdn.html
+ */
+
+/**
+ * Ok, it's everything with operations.
+ * Let's have some fun with uploading files.
+ * First of all, we can upload file from url. Just use construction below.
+ * This will return File instance.
+ */
+$file = $api->uploader->fromUrl('http://www.baysflowers.co.nz/Images/tangerine-delight.jpg');
+
+/**
+ * File must be uploaded, but it's not stored yet.
+ * Let's store it.
+ * We user true flag to be sure that file is uploaded.
+*/
+try {
+  $file->store(true);
+} catch (Exception $e) {
+  echo $e->getMessage()."\n";
+  echo nl2br($e->getTraceAsString())."\n";
+}
+
+/**
+ * We can do any operations with this file now.
+ */
+echo $file->effect('flip')->getUrl()."\n";
+
+/**
+ * We can upload file from path
+ * */
+$file = $api->uploader->fromPath(dirname(__FILE__).'/test.jpg');
+$file->store();
+echo $file->effect('flip')->getUrl()."\n";
+
+/**
+ * Or even just use a file pointer.
+ */
+$fp = fopen(dirname(__FILE__).'/test.jpg', 'r');
+$file = $api->uploader->fromResource($fp);
+$file->store();
+echo $file->effect('flip')->getUrl()."\n";
+
+/**
+ * The last thing you can do is upload a file just from it's contents. But you will have to provide
+ * mime-type.
+ */
+$content = "This is some text I want to upload";
+$file = $api->uploader->fromContent($content, 'text/plain');
+$file->store();
+echo $file->getUrl()."\n";
+
+/**
+ * Lets delete the last file.
+ */
+$file->delete();

lib/ckeditor4/plugins/uploadcare/uploadcare-php/sample-project/index.php

@@ -0,0 +1,81 @@
+<?php
+require_once 'config.php';
+require_once '../uploadcare/lib/5.3-5.4/Uploadcare.php';
+use \Uploadcare;
+$uc_handler = new Uploadcare\Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+?>
+<!DOCTYPE html>
+<html>
+<head>
+<meta encoding='utf-8'>
+<title>Uploadcare</title>
+<link
+	href="// ucarecdn.com/assets/application-68fbe95c430b7646b16aef33e1ad2824.css"
+	media="screen" rel="stylesheet" type="text/css" />
+<link
+	href="https://fonts.googleapis.com/css?family=PT+Sans:400,700,400italic|PT+Sans+Caption&amp;subset=latin,cyrillic"
+	media="screen" rel="stylesheet" type="text/css" />
+<script
+	src="// ucarecdn.com/assets/application-241564109602bb3ae298c344abff83a7.js"
+	type="text/javascript"></script>
+<?php echo $uc_handler->widget->getScriptTag(); ?>
+</head>
+<body class='welcome quick_start docs'>
+	<div class='wrap'>
+		<header class='header'>
+			<div class='logo hide-till-loaded'>
+				<a href="/" class="pic"><img alt="Logo"
+					src="// ucarecdn.com/assets/logo-07ad940955c42489ffac0a2c2f0c5d62.png" />
+				</a> <a href="/">Uploadcare</a>
+			</div>
+			<div class='logo logo-animated show-till-loaded'>
+				<a href="/" class="pic"><img alt="Loading"
+					src="// ucarecdn.com/assets/loading-04f291b2aa39cf277186c36d18d9217f.png" />
+				</a> <a href="/">Uploadcare</a>
+			</div>
+		</header>
+
+		<div class='page-content-placeholder'></div>
+		<div class='page-content'>
+			<section class='content text-content' style="width: 100%;">
+				<article class='content-block'>
+					<ul class="instructions" style="list-style-type: none;">
+						<li id="step1">
+							<div class="item-header" role="foldable-folder">
+								<h2 class="upload">Use Uploadcare widget to upload any image.</h2>
+							</div>
+							<div class="hinted">
+								<form method="POST" action="upload.php" id="uc_form">
+									<?php echo $uc_handler->widget->getInputTag('qs-file', array('attr' => 1)); ?>
+									<input type="submit" value="Save!" />
+								</form>
+								<p id="uc_form_nofile_hint"
+									style="display: none; margin-top: 20px; color: #ff0033;">
+									<img src="img/warning.jpg" alt="" /> Please, upload any image
+									using Uploadcare widget.
+								</p>
+							</div>
+						</li>
+					</ul>
+
+				</article>
+			</section>
+		</div>
+	</div>
+</body>
+<script type="text/javascript">
+	$(function() {
+		handleUCForm = function() {
+			if (!$('#uc_form input[name=qs-file]').val()) {
+				$('#uc_form_nofile_hint').slideDown();
+				setTimeout('hideNoFileHint()', '1500');
+				return false;
+			}
+		};
+		hideNoFileHint = function() {
+			$('#uc_form_nofile_hint').slideUp();
+		}
+		$('#uc_form').submit(handleUCForm);
+	});
+</script>
+</html>

lib/ckeditor4/plugins/uploadcare/uploadcare-php/sample-project/upload.php

@@ -0,0 +1,71 @@
+<?php
+require_once 'config.php';
+require_once '../uploadcare/lib/5.3-5.4/Uploadcare.php';
+use \Uploadcare;
+$file_id = $_POST['qs-file'];
+$uc_handler = new Uploadcare\Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+$file = $uc_handler->getFile($file_id);
+try {
+  $file->store();
+} catch (Exception $e) {
+  echo $e->getMessage()."<br />";
+  echo nl2br($e->getTraceAsString());
+  die();
+}
+?>
+<!DOCTYPE html>
+<html>
+<head>
+<meta encoding='utf-8'>
+<title>Uploadcare</title>
+<link
+	href="// ucarecdn.com/assets/application-68fbe95c430b7646b16aef33e1ad2824.css"
+	media="screen" rel="stylesheet" type="text/css" />
+<link
+	href="https://fonts.googleapis.com/css?family=PT+Sans:400,700,400italic|PT+Sans+Caption&amp;subset=latin,cyrillic"
+	media="screen" rel="stylesheet" type="text/css" />
+<script
+	src="// ucarecdn.com/assets/application-241564109602bb3ae298c344abff83a7.js"
+	type="text/javascript"></script>
+</head>
+<body class='welcome quick_start  docs'>
+	<div class='wrap'>
+		<header class='header'>
+			<div class='logo hide-till-loaded'>
+				<a href="/" class="pic"><img alt="Logo"
+					src="// ucarecdn.com/assets/logo-07ad940955c42489ffac0a2c2f0c5d62.png" />
+				</a> <a href="/">Uploadcare</a>
+			</div>
+			<div class='logo logo-animated show-till-loaded'>
+				<a href="/" class="pic"><img alt="Loading"
+					src="// ucarecdn.com/assets/loading-04f291b2aa39cf277186c36d18d9217f.png" />
+				</a> <a href="/">Uploadcare</a>
+			</div>
+		</header>
+
+		<div class='page-content-placeholder'></div>
+		<div class='page-content'>
+			<section class='content text-content' style="width: 100%;">
+				<article class='content-block'>
+					<ul class="instructions" style="list-style-type: none;">
+						<li id="step1">
+							<div class="item-header" role="foldable-folder">
+								<h2 class="upload">Here is a cropped image size 400x400. Click
+									cropped image to see original one.</h2>
+								<p>
+									Would you like to <a href="../sample-project">upload more</a>?
+								</p>
+							</div>
+							<div class="hinted">
+								<a href="<?php echo $file->getUrl(); ?>" target="_blank"><img
+									src="<?php print $file->resize(400, 400)->getUrl(); ?>" /> </a>
+							</div>
+						</li>
+					</ul>
+
+				</article>
+			</section>
+		</div>
+	</div>
+</body>
+</html>

lib/ckeditor4/plugins/uploadcare/uploadcare-php/tests/5.2/ApiTest.php

@@ -0,0 +1,311 @@
+<?php
+require_once dirname(__FILE__).'/config.php';
+require_once dirname(__FILE__).'/../../uploadcare/lib/5.2/Uploadcare.php';
+
+class ApiTest extends PHPUnit_Framework_TestCase
+{
+  /**
+   * Setup test
+   * @return void
+   */
+  public function setUp() {
+  }
+
+  /**
+   * Tear down
+   * @return void
+   */
+  public function tearDown() {
+  }
+
+  /**
+   * Test for constants not to be misspelled
+   */
+  public function testConstantValid()
+  {
+    $this->assertTrue(API_TYPE_RAW == 'raw');
+    $this->assertTrue(API_TYPE_ACCOUNT == 'account');
+    $this->assertTrue(API_TYPE_STORE == 'store');
+    $this->assertTrue(API_TYPE_FILES == 'files');
+    $this->assertTrue(API_TYPE_FILE == 'file');
+
+    $this->assertTrue(REQUEST_TYPE_POST == 'post');
+    $this->assertTrue(REQUEST_TYPE_PUT == 'put');
+    $this->assertTrue(REQUEST_TYPE_DELETE == 'delete');
+    $this->assertTrue(REQUEST_TYPE_GET == 'get');
+    $this->assertTrue(REQUEST_TYPE_HEAD == 'head');
+    $this->assertTrue(REQUEST_TYPE_OPTIONS == 'options');
+
+    $this->assertTrue(UC_PARAM_FILE_ID == 'file_id');
+  }
+
+  /**
+   * This is just some simple test to check that classes are right.
+   */
+  public function testChildObjectsValid()
+  {
+    $api = new Uploadcare_Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+    $this->assertTrue(get_class($api->widget) == 'Uploadcare_Widget');
+    $this->assertTrue(get_class($api->uploader) == 'Uploadcare_Uploader');
+  }
+
+  /**
+   * Is public key valid?
+   */
+  public function testPublicKeyValid()
+  {
+    $api = new Uploadcare_Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+    $this->assertTrue($api->getPublicKey() == 'demopublickey', 'This is true');
+  }
+
+  /**
+   * Test that getFilesList mehtod returns array
+   * and each item of array is an object of Uploadcare_File class
+   */
+  public function testFileList()
+  {
+    $api = new Uploadcare_Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+    $files = $api->getFileList();
+
+    $this->assertTrue(is_array($files));
+    foreach ($files as $file) {
+      $this->assertTrue(get_class($file) == 'Uploadcare_File');
+    }
+  }
+
+  /**
+   * Test requests for exceptions to "raw" url
+   */
+  public function testRequestsRaw()
+  {
+    $api = new Uploadcare_Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+
+    // this are request to https://api.uploadcare.com/ url.
+    // no exceptions should be thrown
+    try {
+      $result = $api->request('GET', '/');
+      $api->request('HEAD', '/');
+      $api->request('OPTIONS', '/');
+    } catch (Exception $e) {
+      $this->fail('An unexpected exception thrown');
+    }
+
+    // let's check we have a "resources"
+    $this->assertTrue(is_array($result->resources));
+
+    // this are requests to https://api.uploadcare.com/ url.
+    // But this requests are now allowed but this url and we must have an exception
+    try {
+      $api->request('POST', '/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+
+    try {
+      $api->request('PUT', '/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+
+    try {
+      $api->request('DELETE', '/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+  }
+
+  /**
+   * Test requests to "account" url
+   */
+  public function testRequestsAccount()
+  {
+    $api = new Uploadcare_Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+
+    // this are request to https://api.uploadcare.com/account/ url.
+    // no exceptions should be thrown
+    try {
+      $result = $api->request('GET', '/account/');
+      $api->request('HEAD', '/account/');
+      $api->request('OPTIONS', '/account/');
+    } catch (Exception $e) {
+      $this->fail('An unexpected exception thrown');
+    }
+
+    // we have some data, let's check it
+    $this->assertEquals($result->username, 'demo');
+    $this->assertEquals($result->pub_key, 'demopublickey');
+    $this->assertEquals($result->email, 'demo@uploadcare.com');
+
+    // this are requests to https://api.uploadcare.com/account/ url.
+    // But this requests are now allowed but this url and we must have an exception
+    try {
+      $api->request('POST', '/account/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+
+    try {
+      $api->request('PUT', '/account/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+
+    try {
+      $api->request('DELETE', '/account/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+  }
+
+  /**
+   * Test request to "files"
+   */
+  public function testRequestsFiles()
+  {
+    $api = new Uploadcare_Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+
+    // this are request to https://api.uploadcare.com/files/ url.
+    // no exceptions should be thrown
+    try {
+      $result = $api->request('GET', '/files/');
+      $api->request('HEAD', '/files/');
+      $api->request('OPTIONS', '/files/');
+    } catch (Exception $e) {
+      $this->fail('An unexpected exception thrown');
+    }
+
+    // let's check we have an array of raw file data
+    $this->assertTrue(is_array($result->results));
+    $this->assertGreaterThan(0, count($result->results));
+    $file_raw = (array)$result->results[0];
+    $this->assertArrayHasKey('size', $file_raw);
+    $this->assertArrayHasKey('upload_date', $file_raw);
+    $this->assertArrayHasKey('is_image', $file_raw);
+    $this->assertArrayHasKey('file_id', $file_raw);
+    $this->assertArrayHasKey('original_filename', $file_raw);
+    $this->assertArrayHasKey('mime_type', $file_raw);
+
+    // this are requests to https://api.uploadcare.com/files/ url.
+    // But this requests are now allowed but this url and we must have an exception
+    try {
+      $api->request('POST', '/files/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+
+    try {
+      $api->request('PUT', '/files/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+
+    try {
+      $api->request('DELETE', '/files/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+  }
+
+  /**
+   * Let's check the file operations and check for correct urls
+   */
+  public function testFile()
+  {
+    $api = new Uploadcare_Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+    $file = $api->getFile('4bd3a897-f489-4b9f-b643-961b1c9f657e');
+
+    $this->assertEquals(get_class($file), 'Uploadcare_File');
+
+    $this->assertEquals($file->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/');
+    $this->assertEquals($file->resize(400, 400)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/resize/400x400/');
+    $this->assertEquals($file->resize(400, false)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/resize/400x/');
+    $this->assertEquals($file->resize(false, 400)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/resize/x400/');
+
+    $this->assertEquals($file->crop(400, 400)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/crop/400x400/');
+    $this->assertEquals($file->crop(400, 400, true)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/crop/400x400/center/');
+    $this->assertEquals($file->crop(400, 400, true, 'ff0000')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/crop/400x400/center/ff0000/');
+    $this->assertEquals($file->crop(400, 400, false, 'ff0000')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/crop/400x400/ff0000/');
+
+    $this->assertEquals($file->scaleCrop(400, 400)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/scale_crop/400x400/');
+    $this->assertEquals($file->scaleCrop(400, 400, true)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/scale_crop/400x400/center/');
+
+    $this->assertEquals($file->effect('flip')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/effect/flip/');
+    $this->assertEquals($file->effect('grayscale')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/effect/grayscale/');
+    $this->assertEquals($file->effect('invert')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/effect/invert/');
+    $this->assertEquals($file->effect('mirror')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/effect/mirror/');
+
+    $this->assertEquals($file->effect('flip')->effect('mirror')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/effect/flip/-/effect/mirror/');
+    $this->assertEquals($file->effect('mirror')->effect('flip')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/effect/mirror/-/effect/flip/');
+
+    $this->assertEquals($file->resize(400, 400)->scaleCrop(200, 200, true)->effect('mirror')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/resize/400x400/-/scale_crop/200x200/center/-/effect/mirror/');
+  }
+
+  /**
+   * Test uploading and deleting
+   */
+  public function testUploadAndDelete()
+  {
+    $api = new Uploadcare_Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+
+    // upload form url
+    try {
+      $file = $api->uploader->fromUrl('http://www.baysflowers.co.nz/Images/tangerine-delight.jpg');
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to upload from url '.$e->getMessage());
+    }
+    $this->assertEquals(get_class($file), 'Uploadcare_File');
+    try {
+      $file->store();
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to store uploaded file from url'.$e->getMessage());
+    }
+
+    // upload from path
+    try {
+      $file = $api->uploader->fromPath(dirname(__FILE__).'/test.jpg');
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to upload from path');
+    }
+    try {
+      $file->store();
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to store uploaded file from path'.$e->getMessage());
+    }
+
+    // upload from resource
+    try {
+      $fp = fopen(dirname(__FILE__).'/test.jpg', 'r');
+      $file = $api->uploader->fromResource($fp);
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to upload from resource'.$e->getMessage());
+    }
+    try {
+      $file->store();
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to store uploaded file from resource'.$e->getMessage());
+    }
+
+    // upload from raw
+    try {
+      $content = "This is some text I want to upload";
+      $file = $api->uploader->fromContent($content, 'text/plain');
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to upload from contents'.$e->getMessage());
+    }
+    try {
+      $file->store();
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to store uploaded file from contents'.$e->getMessage());
+    }
+
+    $text = file_get_contents($file->getUrl());
+    $this->assertEquals($text, "This is some text I want to upload");
+
+    // test file delete
+    try {
+      $file->delete();
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to delete file'.$e->getMessage());
+    }
+  }
+}

lib/ckeditor4/plugins/uploadcare/uploadcare-php/tests/5.2/config.php

@@ -0,0 +1,3 @@
+<?php
+define('UC_PUBLIC_KEY', 'demopublickey');
+define('UC_SECRET_KEY', 'demoprivatekey');

lib/ckeditor4/plugins/uploadcare/uploadcare-php/tests/5.3/ApiTest.php

@@ -0,0 +1,313 @@
+<?php
+error_reporting(E_ERROR);
+require_once dirname(__FILE__).'/config.php';
+require_once dirname(__FILE__).'/../../uploadcare/lib/5.3-5.4/Uploadcare.php';
+use \Uploadcare;
+
+class ApiTest extends PHPUnit_Framework_TestCase
+{
+  /**
+   * Setup test
+   * @return void
+   */
+  public function setUp() {
+  }
+
+  /**
+   * Tear down
+   * @return void
+   */
+  public function tearDown() {
+  }
+
+  /**
+   * Test for constants not to be misspelled
+   */
+  public function testConstantValid()
+  {
+    $this->assertTrue(API_TYPE_RAW == 'raw');
+    $this->assertTrue(API_TYPE_ACCOUNT == 'account');
+    $this->assertTrue(API_TYPE_STORE == 'store');
+    $this->assertTrue(API_TYPE_FILES == 'files');
+    $this->assertTrue(API_TYPE_FILE == 'file');
+
+    $this->assertTrue(REQUEST_TYPE_POST == 'post');
+    $this->assertTrue(REQUEST_TYPE_PUT == 'put');
+    $this->assertTrue(REQUEST_TYPE_DELETE == 'delete');
+    $this->assertTrue(REQUEST_TYPE_GET == 'get');
+    $this->assertTrue(REQUEST_TYPE_HEAD == 'head');
+    $this->assertTrue(REQUEST_TYPE_OPTIONS == 'options');
+
+    $this->assertTrue(UC_PARAM_FILE_ID == 'file_id');
+  }
+
+  /**
+   * This is just some simple test to check that classes are right.
+   */
+  public function testChildObjectsValid()
+  {
+    $api = new Uploadcare\Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+    $this->assertTrue(get_class($api->widget) == 'Uploadcare\Widget');
+    $this->assertTrue(get_class($api->uploader) == 'Uploadcare\Uploader');
+  }
+
+  /**
+   * Is public key valid?
+   */
+  public function testPublicKeyValid()
+  {
+    $api = new Uploadcare\Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+    $this->assertTrue($api->getPublicKey() == 'demopublickey', 'This is true');
+  }
+
+  /**
+   * Test that getFilesList mehtod returns array
+   * and each item of array is an object of Uploadcare\File class
+   */
+  public function testFileList()
+  {
+    $api = new Uploadcare\Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+    $files = $api->getFileList();
+
+    $this->assertTrue(is_array($files));
+    foreach ($files as $file) {
+      $this->assertTrue(get_class($file) == 'Uploadcare\File');
+    }
+  }
+
+  /**
+   * Test requests for exceptions to "raw" url
+   */
+  public function testRequestsRaw()
+  {
+    $api = new Uploadcare\Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+
+    // this are request to https://api.uploadcare.com/ url.
+    // no exceptions should be thrown
+    try {
+      $result = $api->request('GET', '/');
+      $api->request('HEAD', '/');
+      $api->request('OPTIONS', '/');
+    } catch (Exception $e) {
+      $this->fail('An unexpected exception thrown');
+    }
+
+    // let's check we have a "resources"
+    $this->assertTrue(is_array($result->resources));
+
+    // this are requests to https://api.uploadcare.com/ url.
+    // But this requests are now allowed but this url and we must have an exception
+    try {
+      $api->request('POST', '/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+
+    try {
+      $api->request('PUT', '/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+
+    try {
+      $api->request('DELETE', '/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+  }
+
+  /**
+   * Test requests to "account" url
+   */
+  public function testRequestsAccount()
+  {
+    $api = new Uploadcare\Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+
+    // this are request to https://api.uploadcare.com/account/ url.
+    // no exceptions should be thrown
+    try {
+      $result = $api->request('GET', '/account/');
+      $api->request('HEAD', '/account/');
+      $api->request('OPTIONS', '/account/');
+    } catch (Exception $e) {
+      $this->fail('An unexpected exception thrown');
+    }
+
+    // we have some data, let's check it
+    $this->assertEquals($result->username, 'demo');
+    $this->assertEquals($result->pub_key, 'demopublickey');
+    $this->assertEquals($result->email, 'demo@uploadcare.com');
+
+    // this are requests to https://api.uploadcare.com/account/ url.
+    // But this requests are now allowed but this url and we must have an exception
+    try {
+      $api->request('POST', '/account/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+
+    try {
+      $api->request('PUT', '/account/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+
+    try {
+      $api->request('delete', '/account/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+  }
+
+  /**
+   * Test request to "files"
+   */
+  public function testRequestsFiles()
+  {
+    $api = new Uploadcare\Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+
+    // this are request to https://api.uploadcare.com/files/ url.
+    // no exceptions should be thrown
+    try {
+      $result = $api->request('GET', '/files/');
+      $api->request('HEAD', '/files/');
+      $api->request('OPTIONS', '/files/');
+    } catch (Exception $e) {
+      $this->fail('An unexpected exception thrown');
+    }
+
+    // let's check we have an array of raw file data
+    $this->assertTrue(is_array($result->results));
+    $this->assertGreaterThan(0, count($result->results));
+    $file_raw = (array)$result->results[0];
+    $this->assertArrayHasKey('size', $file_raw);
+    $this->assertArrayHasKey('upload_date', $file_raw);
+    $this->assertArrayHasKey('is_image', $file_raw);
+    $this->assertArrayHasKey('file_id', $file_raw);
+    $this->assertArrayHasKey('original_filename', $file_raw);
+    $this->assertArrayHasKey('mime_type', $file_raw);
+
+    // this are requests to https://api.uploadcare.com/files/ url.
+    // But this requests are now allowed but this url and we must have an exception
+    try {
+      $api->request('POST', '/files/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+
+    try {
+      $api->request('PUT', '/files/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+
+    try {
+      $api->request('DELETE', '/files/');
+      $this->fail('We must get an exception but everything worked fine!');
+    } catch (Exception $e) {
+    }
+  }
+
+  /**
+   * Let's check the file operations and check for correct urls
+   */
+  public function testFile()
+  {
+    $api = new Uploadcare\Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+    $file = $api->getFile('4bd3a897-f489-4b9f-b643-961b1c9f657e');
+
+    $this->assertEquals(get_class($file), 'Uploadcare\File');
+
+    $this->assertEquals($file->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/');
+    $this->assertEquals($file->resize(400, 400)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/resize/400x400/');
+    $this->assertEquals($file->resize(400, false)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/resize/400x/');
+    $this->assertEquals($file->resize(false, 400)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/resize/x400/');
+
+    $this->assertEquals($file->crop(400, 400)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/crop/400x400/');
+    $this->assertEquals($file->crop(400, 400, true)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/crop/400x400/center/');
+    $this->assertEquals($file->crop(400, 400, true, 'ff0000')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/crop/400x400/center/ff0000/');
+    $this->assertEquals($file->crop(400, 400, false, 'ff0000')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/crop/400x400/ff0000/');
+
+    $this->assertEquals($file->scaleCrop(400, 400)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/scale_crop/400x400/');
+    $this->assertEquals($file->scaleCrop(400, 400, true)->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/scale_crop/400x400/center/');
+
+    $this->assertEquals($file->effect('flip')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/effect/flip/');
+    $this->assertEquals($file->effect('grayscale')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/effect/grayscale/');
+    $this->assertEquals($file->effect('invert')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/effect/invert/');
+    $this->assertEquals($file->effect('mirror')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/effect/mirror/');
+
+    $this->assertEquals($file->effect('flip')->effect('mirror')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/effect/flip/-/effect/mirror/');
+    $this->assertEquals($file->effect('mirror')->effect('flip')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/effect/mirror/-/effect/flip/');
+
+    $this->assertEquals($file->resize(400, 400)->scaleCrop(200, 200, true)->effect('mirror')->getUrl(), 'https://ucarecdn.com/4bd3a897-f489-4b9f-b643-961b1c9f657e/-/resize/400x400/-/scale_crop/200x200/center/-/effect/mirror/');
+  }
+
+  /**
+   * Test uploading and deleting
+   */
+  public function testUploadAndDelete()
+  {
+    $api = new Uploadcare\Api(UC_PUBLIC_KEY, UC_SECRET_KEY);
+
+    // upload form url
+    try {
+      $file = $api->uploader->fromUrl('http://www.baysflowers.co.nz/Images/tangerine-delight.jpg');
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to upload from url '.$e->getMessage());
+    }
+    $this->assertEquals(get_class($file), 'Uploadcare\File');
+    try {
+      $file->store();
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to store uploaded file from url'.$e->getMessage());
+    }
+
+    // upload from path
+    try {
+      $file = $api->uploader->fromPath(dirname(__FILE__).'/test.jpg');
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to upload from path');
+    }
+    try {
+      $file->store();
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to store uploaded file from path'.$e->getMessage());
+    }
+
+    // upload from resource
+    try {
+      $fp = fopen(dirname(__FILE__).'/test.jpg', 'r');
+      $file = $api->uploader->fromResource($fp);
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to upload from resource'.$e->getMessage());
+    }
+    try {
+      $file->store();
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to store uploaded file from resource'.$e->getMessage());
+    }
+
+    // upload from raw
+    try {
+      $content = "This is some text I want to upload";
+      $file = $api->uploader->fromContent($content, 'text/plain');
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to upload from contents'.$e->getMessage());
+    }
+    try {
+      $file->store();
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to store uploaded file from contents'.$e->getMessage());
+    }
+
+    $text = file_get_contents($file->getUrl());
+    $this->assertEquals($text, "This is some text I want to upload");
+
+    // test file delete
+    try {
+      $file->delete();
+    } catch (Exception $e) {
+      $this->fail('We get an unexpected exception trying to delete file'.$e->getMessage());
+    }
+  }
+}

lib/ckeditor4/plugins/uploadcare/uploadcare-php/tests/5.3/config.php

@@ -0,0 +1,3 @@
+<?php
+define('UC_PUBLIC_KEY', 'demopublickey');
+define('UC_SECRET_KEY', 'demoprivatekey');

lib/ckeditor4/plugins/uploadcare/uploadcare-php/uploadcare/lib/5.2/Api.php

@@ -0,0 +1,302 @@
+<?php
+/**
+ * @file
+ *
+ * Uploadcare_Api
+ */
+
+class Uploadcare_Api
+{
+  /**
+   * Uploadcare public key
+   *
+   * @var string
+   **/
+  private $public_key = null;
+
+  /**
+   * Uploadcare secret key
+   *
+   * @var string
+   **/
+  private $secret_key = null;
+
+  /**
+   * API host for requests
+   *
+   * @var string
+   **/
+  private $api_host = 'api.uploadcare.com';
+
+  /**
+   * Uploadcare_Widget instance.
+   *
+   * @var Uploadcare_Widget
+   **/
+  public $widget = null;
+
+  /**
+   * Uploadcare_Uploader instance
+   *
+   * @var Uploadcare_Uploader
+   **/
+  public $uploader = null;
+
+  /**
+   * Uploadcare library version
+   *
+   * @var string
+   **/
+  public $version = '1.0.2/5.3';
+
+  /**
+   * Constructor
+   *
+   * @param string $public_key A public key given by Uploadcare.com
+   * @param string $secret_key A private (secret) key given by Uploadcare.com
+   * @return void
+   **/
+  public function __construct($public_key, $secret_key)
+  {
+    $this->public_key = $public_key;
+    $this->secret_key = $secret_key;
+    $this->widget = new Uploadcare_Widget($this);
+    $this->uploader = new Uploadcare_Uploader($this);
+  }
+
+  /**
+   * Returns public key
+   *
+   * @return string
+   **/
+  public function getPublicKey()
+  {
+    return $this->public_key;
+  }
+
+  /**
+   * Return an array of File objects to work with.
+   *
+   * @param integer $page Page to be shown.
+   * @return array
+   **/
+  public function getFileList($page = 1)
+  {
+    $data = $this->__preparedRequest(API_TYPE_FILES, REQUEST_TYPE_GET, array('page' => $page));
+    $files_raw = (array)$data->results;
+    $result = array();
+    foreach ($files_raw as $file_raw) {
+      $result[] = new Uploadcare_File($file_raw->file_id, $this);
+    }
+    return $result;
+  }
+
+  /**
+   * Get info about pagination.
+   *
+   * @param integer $page
+   * @return array
+   **/
+  public function getFilePaginationInfo($page = 1)
+  {
+    $data = (array)$this->__preparedRequest(API_TYPE_FILES, REQUEST_TYPE_GET, array('page' => $page));
+    unset($data['results']);
+    return $data;
+  }
+
+  /**
+   * Run raw request to REST.
+   *
+   * @param string $method Request method: GET, POST, HEAD, OPTIONS, PUT, etc
+   * @param string $path Path to request
+   * @param string $data Array of data to send.
+   * @param string $headers Additonal headers.
+   * @return array
+   **/
+  public function request($method, $path, $data = array(), $headers = array())
+  {
+    $ch = curl_init(sprintf('https://%s%s', $this->api_host, $path));
+    $this->__setRequestType($ch, $method);
+    $this->__setHeaders($ch, $headers, $data);
+
+    $data = curl_exec($ch);
+    if ($data === false) {
+      throw new Exception(curl_error($ch));
+    }
+    $ch_info = curl_getinfo($ch);
+    if ($method == REQUEST_TYPE_DELETE) {
+      if ($ch_info['http_code'] != 204) {
+        throw new Exception('Request returned unexpected http code '.$ch_info['http_code'].'. '.$data);
+      }
+    } else {
+      if ($ch_info['http_code'] != 200) {
+        throw new Exception('Request returned unexpected http code '.$ch_info['http_code'].'. '.$data);
+      }
+    }
+    curl_close($ch);
+    if ($this->public_key == 'demopublickey' || $this->secret_key == 'demoprivatekey') {
+      trigger_error('You are using the demo account. Please get an Uploadcare account at https://uploadcare.com/accounts/create/', E_USER_WARNING);
+    }
+    return json_decode($data);
+  }
+
+  /**
+   * Make request to API.
+   * Throws Exception if not http code 200 was returned.
+   * If http code 200 it will parse returned data form request as JSON.
+   *
+   * @param string $type Construct type. Url will be generated using this params. Options: store
+   * @param string $request_type Request type. Options: get, post, put, delete.
+   * @param array $params Additional parameters for requests as array.
+   * @throws Exception
+   * @return array
+   **/
+  public function __preparedRequest($type, $request_type = REQUEST_TYPE_GET, $params = array())
+  {
+    $url = $this->__getUrl($type, $params);
+
+    $ch = $this->__initRequest($type, $params);
+    $this->__setRequestType($ch, $request_type);
+    $this->__setHeaders($ch);
+
+    $data = curl_exec($ch);
+    $ch_info = curl_getinfo($ch);
+    if ($request_type == REQUEST_TYPE_DELETE) {
+      if ($ch_info['http_code'] != 204) {
+        throw new Exception('Request returned unexpected http code '.$ch_info['http_code'].'. '.$data);
+      }
+    } else {
+      if ($ch_info['http_code'] != 200) {
+        throw new Exception('Request returned unexpected http code '.$ch_info['http_code'].'. '.$data);
+      }
+    }
+    curl_close($ch);
+    if ($this->public_key == 'demopublickey' || $this->secret_key == 'demoprivatekey') {
+      trigger_error('You are using the demo account. Please get an Uploadcare account at https://uploadcare.com/accounts/create/', E_USER_WARNING);
+    }
+    return json_decode($data);
+  }
+
+  /**
+   * Inits curl request and rerturn handler
+   *
+   * @param string $type Construct type. Url will be generated using this params. Options: store
+   * @param array $params Additional parameters for requests as array.
+   * @return resource
+   **/
+  private function __initRequest($type, $params = array())
+  {
+    $url = $this->__getUrl($type, $params);
+    return $ch = curl_init($url);
+  }
+
+  /**
+   * Return url to send request to.
+   * Throws Exception if wrong type is provided or parameters missing.
+   *
+   * @param string $type Construct type.
+   * @param array $params Additional parameters for requests as array.
+   * @throws Exception
+   * @return string
+   **/
+  private function __getUrl($type, $params = array())
+  {
+    switch ($type) {
+      case API_TYPE_RAW:
+        return sprintf('https://%s/', $this->api_host);
+      case API_TYPE_ACCOUNT:
+        return sprintf('https://%s/account/', $this->api_host);
+      case API_TYPE_FILES:
+        return sprintf('https://%s/files/?page=%s', $this->api_host, $params['page']);
+      case API_TYPE_STORE:
+        if (array_key_exists(UC_PARAM_FILE_ID, $params) == false) {
+          throw new Exception('Please provide "store_id" param for request');
+        }
+        return sprintf('https://%s/files/%s/storage/', $this->api_host, $params['file_id']);
+      case API_TYPE_FILE:
+        if (array_key_exists(UC_PARAM_FILE_ID, $params) == false) {
+          throw new Exception('Please provide "store_id" param for request');
+        }
+        return sprintf('https://%s/files/%s/', $this->api_host, $params['file_id']);
+      default:
+        throw new Exception('No api url type is provided for request. Use store, or appropriate constants.');
+    }
+  }
+
+  /**
+   * Set request type.
+   * If request type is wrong an Exception will be thrown.
+   *
+   * @param resource $ch. Curl resource.
+   * @param string $type Request type. Options: get, post, put, delete.
+   * @throws Exception
+   * @return void
+   **/
+  private function __setRequestType($ch, $type = REQUEST_TYPE_GET)
+  {
+    switch ($type) {
+      case REQUEST_TYPE_GET:
+      case 'GET':
+        break;
+      case REQUEST_TYPE_POST:
+      case 'POST':
+        curl_setopt($ch, CURLOPT_POST, true);
+        break;
+      case REQUEST_TYPE_PUT:
+      case 'PUT':
+        curl_setopt($ch, CURLOPT_PUT, true);
+        break;
+      case REQUEST_TYPE_DELETE:
+      case 'DELETE':
+        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'DELETE');
+        break;
+      case REQUEST_TYPE_HEAD:
+      case 'HEAD':
+        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'HEAD');
+        break;
+      case REQUEST_TYPE_OPTIONS:
+      case 'OPTIONS':
+        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'OPTIONS');
+        break;
+      default:
+        throw new Exception('No request type is provided for request. Use post, put, delete, get or appropriate constants.');
+    }
+  }
+
+  /**
+   * Set all the headers for request and set returntrasfer.
+   *
+   * @param resource $ch. Curl resource.
+   * @param array $headers additional headers.
+   * @param array $data Data array.
+   * @return void
+   **/
+  private function __setHeaders($ch, $add_headers = array(), $data = array())
+  {
+    $content_length = 0;
+    if (count($data)) {
+      $content_length = strlen(http_build_query($data));
+    }
+    $headers = array(
+        sprintf('Host: %s', $this->api_host),
+        sprintf('Authorization: Uploadcare.Simple %s:%s', $this->public_key, $this->secret_key),
+        'Content-Type: application/json',
+        'Content-Length: '.$content_length,
+        'User-Agent: PHP Uploadcare Module '.$this->version,
+        sprintf('Date: %s', date('Y-m-d H:i:s')),
+    ) + $add_headers;
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
+  }
+
+  /**
+   * Get object of Uploadcare_File class by file_id
+   *
+   * @param string $file_id Uploadcare file_id
+   * @return Uploadcare_File
+   **/
+  public function getFile($file_id)
+  {
+    return new Uploadcare_File($file_id, $this);
+  }
+}

lib/ckeditor4/plugins/uploadcare/uploadcare-php/uploadcare/lib/5.2/File.php

@@ -0,0 +1,320 @@
+<?php
+/**
+ * @file
+ *
+ * Uploadcare_File
+ */
+
+class Uploadcare_File
+{
+  /**
+   * Uploadcare cdn host
+   *
+   * @var string
+   */
+  private $cdn_host = 'ucarecdn.com';
+
+  /**
+   * Uploadcare file id
+   *
+   * @var string
+   */
+  private $file_id = null;
+
+  /**
+   * Operations and params for operations: crop, resize, scale_crop, effect.
+   *
+   * @var array
+   */
+  private $operations = array();
+
+  /**
+   * Uploadcare class instance.
+   *
+   * @var Uploadcare_Api
+  */
+  private $api = null;
+
+  /**
+   * Operations list
+   */
+  private $operation_list = array('crop', 'resize', 'scale_crop', 'effect');
+
+  /**
+   * Cached data
+   *
+   * @var array
+  */
+  private $cached_data = null;
+
+  /**
+   * Constructs an object for CDN file with specified ID
+   *
+   * @param string $file_id Uploadcare file_id
+   * @param Uploadcare_Uploadcare $api Uploadcare class instance
+   */
+  public function __construct($file_id, Uploadcare_Api $api)
+  {
+    $this->file_id = $file_id;
+    $this->api = $api;
+  }
+
+  public function __get($name)
+  {
+    if ($name == 'data') {
+      if (!$this->cached_data) {
+        $this->cached_data = (array)$this->api->__preparedRequest(API_TYPE_FILE, REQUEST_TYPE_GET, array('file_id' => $this->file_id));
+      }
+      return $this->cached_data;
+    }
+  }
+
+  /**
+   * @return string
+   */
+  public function __toString()
+  {
+    return $this->getUrl();
+  }
+
+  /**
+   * Return file_id for this file
+   *
+   * @return string
+   */
+  public function getFileId()
+  {
+    return $this->file_id;
+  }
+
+  /**
+   * Try to store file.
+   *
+   * @param boolean $check_status Check upload status?
+   * @return array
+   */
+  public function store()
+  {
+    return $this->api->__preparedRequest(API_TYPE_STORE, REQUEST_TYPE_POST, array('file_id' => $this->file_id));
+  }
+
+  /**
+   * Delete file
+   *
+   * @return array
+   */
+  public function delete()
+  {
+    return $this->api->__preparedRequest(API_TYPE_FILE, REQUEST_TYPE_DELETE, array('file_id' => $this->file_id));
+  }
+
+  /**
+   * Get url of original image
+   *
+   * @param string $postfix
+   * @return string
+   */
+  public function getUrl($postfix = null)
+  {
+    $url = sprintf('https://%s/%s/', $this->cdn_host, $this->file_id);
+
+    $operations = array();
+
+    foreach ($this->operations as $i => $operation_item) {
+      $part = array();
+      foreach (array_keys($operation_item) as $operation_type) {
+        $operation_params = $operation_item[$operation_type];
+        $part[] = $operation_type;
+        switch ($operation_type) {
+          case 'crop':
+            $part = $this->__addPartSize($part, $operation_params);
+            $part = $this->__addPartCenter($part, $operation_params);
+            $part = $this->__addPartFillColor($part, $operation_params);
+            break;
+          case 'resize':
+            $part = $this->__addPartSize($part, $operation_params);
+            break;
+          case 'scale_crop':
+            $part = $this->__addPartSize($part, $operation_params);
+            $part = $this->__addPartCenter($part, $operation_params);
+            break;
+          case 'effect':
+            $part = $this->__addPartEffect($part, $operation_params);
+            break;
+          case 'custom':
+            $part = array($operation_params);
+            break;
+        }
+        $part_str = join('/', $part);
+        $operations[] = $part_str;
+      }
+    }
+
+    if (count($operations)) {
+      $operations_part = join('/-/', $operations);
+      return $url.'-/'.$operations_part.'/'.$postfix;
+    } else {
+      return $url.$postfix;
+    }
+  }
+
+  /**
+   * Get image tag
+   *
+   * @param string $postfix File path postfix
+   * @param array $attrs additional attributes
+   * @return string
+   */
+  public function getImgTag($postfix = null, $attribs = array())
+  {
+    $to_compile = array();
+    foreach ($attribs as $key => $value) {
+      $to_compile[] = sprintf('%s="%s"', $key, $value);
+    }
+    return sprintf('<img src="%s" %s />', $this->getUrl(), join(' ', $to_compile));
+  }
+
+  /**
+   * Get object with cropped parameters.
+   *
+   * @param integer $width Crop width
+   * @param integer $height Crop height
+   * @param boolean $center Center crop? true or false (default false).
+   * @param string $fill_color Fill color. If nothig is provided just use false (default false).
+   * @return Uploadcare_File
+   */
+  public function crop($width, $height, $center = false, $fill_color = false)
+  {
+    $result = clone $this;
+    $result->operations[]['crop'] = array(
+        'width' => $width,
+        'height' => $height,
+        'center' => $center,
+        'fill_color' => $fill_color,
+    );
+    return $result;
+  }
+
+  /**
+   * Get object with resized parameters.
+   * Provide width or height or both.
+   * If not width or height are provided exceptions will be thrown!
+   *
+   * @param integer $width Resized image width. Provide false if you resize proportionally.
+   * @param integer $height Resized image height. Provide false if you resize proportionally.
+   * @throws Exception
+   * @return Uploadcare_File
+   */
+  public function resize($width = false, $height = false)
+  {
+    $result = clone $this;
+    if (!$width && !$height) {
+      throw new Exception('Please, provide at least width or height for resize');
+    }
+    $result->operations[]['resize'] = array(
+        'width' => $width,
+        'height' => $height,
+    );
+    return $result;
+  }
+
+  /**
+   * Get object with cropped parameters.
+   *
+   * @param integer $width Crop width
+   * @param integer $height Crop height
+   * @param boolean $center Center crop? true or false (default false).
+   * @return Uploadcare_File
+   */
+  public function scaleCrop($width, $height, $center = false)
+  {
+    $result = clone $this;
+    $result->operations[]['scale_crop'] = array(
+        'width' => $width,
+        'height' => $height,
+        'center' => $center,
+    );
+    return $result;
+  }
+
+  /**
+   * Apply effect
+   *
+   * @param string $effect Effect name
+   * @return File
+   */
+  public function effect($effect)
+  {
+    $result = clone $this;
+    $result->operations[]['effect'] = $effect;
+    return $result;
+  }
+
+  /**
+   * Add any custom operation.
+   *
+   * @param string $operation
+   */
+  public function op($operation)
+  {
+    $result = clone $this;
+    $result->operations[]['custom'] = $operation;
+    return $result;
+  }
+
+  /**
+   * Adds part with size for operations
+   *
+   * @param array $part
+   * @param array $params
+   * @return array
+   */
+  private function __addPartSize($part, $params)
+  {
+    $part[] = sprintf('%sx%s', $params['width'], $params['height']);
+    return $part;
+  }
+
+  /**
+   * Adds part with center for operations
+   *
+   * @param array $part
+   * @param array $params
+   * @return array
+   */
+  private function __addPartCenter($part, $params)
+  {
+    if ($params['center'] !== false) {
+      $part[] = 'center';
+    }
+    return $part;
+  }
+
+  /**
+   * Adds part with fill color for operations
+   *
+   * @param array $part
+   * @param array $params
+   * @return array
+   */
+  private function __addPartFillColor($part, $params)
+  {
+    if ($params['fill_color'] !== false) {
+      $part[] = $params['fill_color'];
+    }
+    return $part;
+  }
+
+  /**
+   * Adds part with effect for operations
+   *
+   * @param array $part
+   * @param string $effect
+   * @return array
+   */
+  private function __addPartEffect($part, $effect)
+  {
+    $part[] = $effect;
+    return $part;
+  }
+}

lib/ckeditor4/plugins/uploadcare/uploadcare-php/uploadcare/lib/5.2/Uploadcare.php

@@ -0,0 +1,26 @@
+<?php
+/**
+ * @file
+ *
+ * Uploadcare Constants
+ */
+
+define('API_TYPE_RAW', 'raw');
+define('API_TYPE_ACCOUNT', 'account');
+define('API_TYPE_FILES', 'files');
+define('API_TYPE_FILE', 'file');
+define('API_TYPE_STORE', 'store');
+
+define('REQUEST_TYPE_POST', 'post');
+define('REQUEST_TYPE_PUT', 'put');
+define('REQUEST_TYPE_DELETE', 'delete');
+define('REQUEST_TYPE_GET', 'get');
+define('REQUEST_TYPE_HEAD', 'head');
+define('REQUEST_TYPE_OPTIONS', 'options');
+
+define('UC_PARAM_FILE_ID', 'file_id');
+
+require_once dirname(__FILE__).'/Api.php';
+require_once dirname(__FILE__).'/File.php';
+require_once dirname(__FILE__).'/Widget.php';
+require_once dirname(__FILE__).'/Uploader.php';

lib/ckeditor4/plugins/uploadcare/uploadcare-php/uploadcare/lib/5.2/Uploader.php

@@ -0,0 +1,230 @@
+<?php
+/**
+ * @file
+ *
+ * Uploadcare_Uploader
+ */
+
+class Uploadcare_Uploader {
+  /**
+   * Base upload host
+   *
+   * @var string
+   */
+  private $host = 'upload.uploadcare.com';
+
+  /**
+   * Api instance
+   *
+   * @var Uploadcare_Api
+   */
+  private $api = null;
+
+  /**
+   * Constructor
+   */
+  public function __construct(Uploadcare_Api $api) {
+    $this->api = $api;
+  }
+
+  /**
+   * Check file status.
+   * Return array of json data
+   *
+   * @param string $file_id
+   * @return array
+   */
+  public function status($token) {
+    $data = array(
+      'token' => $token,
+    );
+    $ch = $this->__initRequest('status', $data);
+    $this->__setHeaders($ch);
+    $data = $this->__runRequest($ch);
+    return $data;
+  }
+
+  /**
+   * Upload file from url and get Uploadcare_File instance
+   *
+   * @param string $url An url of file to be uploaded.
+   * @return Uploadcare_File
+   */
+  public function fromUrl($url, $check_status = true, $timeout = 1, $max_attempts = 5) {
+    $data = array(
+      '_' => time(),
+      'source_url' => $url,
+      'pub_key' => $this->api->getPublicKey(),
+    );
+    $ch = $this->__initRequest('from_url', $data);
+    $this->__setHeaders($ch);
+
+    $data = $this->__runRequest($ch);
+    $token = $data->token;
+
+    if ($check_status) {
+      $success = false;
+      $attempts = 0;
+      while (!$success) {
+        $data = $this->status($token);
+        if ($data->status == 'success') {
+          $success = true;
+        }
+        if ($attempts == $max_attempts) {
+          throw new Exception('Cannot store file, max attempts reached, upload is not successful');
+        }
+        sleep($timeout);
+        $attempts++;
+      }
+    } else {
+      return $token;
+    }
+    $file_id = $data->file_id;
+
+    return new Uploadcare_File($file_id, $this->api);
+  }
+
+  /**
+   * Upload file from local path.
+   *
+   * @param string $path
+   * @return Uploadcare_File
+   */
+  public function fromPath($path) {
+    $data = array(
+      'UPLOADCARE_PUB_KEY' => $this->api->getPublicKey(),
+      'file' => '@'.$path,
+    );
+    $ch = $this->__initRequest('base');
+    $this->__setRequestType($ch);
+    $this->__setData($ch, $data);
+    $this->__setHeaders($ch);
+
+    $data = $this->__runRequest($ch);
+    $file_id = $data->file;
+    return new Uploadcare_File($file_id, $this->api);
+  }
+
+  /**
+   * Upload file from file pointer
+   *
+   * @param resourse $fp
+   * @return Uploadcare_File
+   */
+  public function fromResource($fp) {
+    $tmpfile = tempnam(sys_get_temp_dir(), 'ucr');
+    $temp = fopen($tmpfile, 'w');
+    while (!feof($fp)) {
+      fwrite($temp, fread($fp, 8192));
+    }
+    fclose($temp);
+    fclose($fp);
+
+    $data = array(
+      'UPLOADCARE_PUB_KEY' => $this->api->getPublicKey(),
+      'file' => '@'.$tmpfile,
+    );
+    $ch = $this->__initRequest('base');
+    $this->__setRequestType($ch);
+    $this->__setData($ch, $data);
+    $this->__setHeaders($ch);
+
+    $data = $this->__runRequest($ch);
+    $file_id = $data->file;
+    return new Uploadcare_File($file_id, $this->api);
+  }
+
+  /**
+   * Upload file from string using mime-type.
+   *
+   * @param string $content
+   * @param string $mime_type
+   * @return Uploadcare_File
+   */
+  public function fromContent($content, $mime_type) {
+    $tmpfile = tempnam(sys_get_temp_dir(), 'ucr');
+    $temp = fopen($tmpfile, 'w');
+    fwrite($temp, $content);
+    fclose($temp);
+
+    $data = array(
+      'UPLOADCARE_PUB_KEY' => $this->api->getPublicKey(),
+      'file' => sprintf('@%s;type=%s', $tmpfile, $mime_type),
+    );
+    $ch = $this->__initRequest('base');
+    $this->__setRequestType($ch);
+    $this->__setData($ch, $data);
+    $this->__setHeaders($ch);
+
+    $data = $this->__runRequest($ch);
+    $file_id = $data->file;
+    return new Uploadcare_File($file_id, $this->api);
+  }
+
+  /**
+   * Init upload request and return curl resource
+   *
+   * @param array $data
+   * @return resource
+   */
+  private function __initRequest($type, $data = null) {
+    $url = sprintf('https://%s/%s/', $this->host, $type);
+    if (is_array($data)) {
+      $url = sprintf('%s?%s', $url, http_build_query($data));
+    }
+    $ch = curl_init($url);
+    return $ch;
+  }
+
+  /**
+   * Set request type for curl resrouce
+   *
+   * @param resource $ch
+   * @return void
+   */
+  private function __setRequestType($ch) {
+    curl_setopt($ch, CURLOPT_POST, true);
+  }
+
+  /**
+   * Set all the headers for request and set returntrasfer.
+   *
+   * @param resource $ch. Curl resource.
+   * @return void
+   */
+  private function __setHeaders($ch) {
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
+    'User-Agent: PHP Uploadcare Module '.$this->api->version,
+    ));
+  }
+
+  /**
+   * Set data to be posted on request
+   *
+   * @param resource $ch. Curl resource
+   * @param array $data
+   * @return void
+   */
+  private function __setData($ch, $data = array()) {
+    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
+  }
+
+  /**
+   * Run prepared curl request.
+   * Throws Exception of not 200 http code
+   *
+   * @param resource $ch. Curl resource
+   * @throws Exception
+   * @return array
+   */
+  private function __runRequest($ch) {
+    $data = curl_exec($ch);
+    $ch_info = curl_getinfo($ch);
+    if ($ch_info['http_code'] != 200) {
+      throw new Exception('Request returned unexpected http code '.$ch_info['http_code'].'. '.$data);
+    }
+    curl_close($ch);
+    return json_decode($data);
+  }
+}

lib/ckeditor4/plugins/uploadcare/uploadcare-php/uploadcare/lib/5.2/Widget.php

@@ -0,0 +1,71 @@
+<?php
+/**
+ * @file
+ *
+ * Uploadcare_Widget
+ */
+
+class Uploadcare_Widget {
+  /**
+   * Uploadcare_Api instance
+   *
+   * @var Uploadcare_Api
+   */
+  private $api = null;
+
+  /**
+   * Uploadcare widget version
+   * @var string
+   */
+  private $version = '0.6.3';
+
+  /**
+   * Constructor
+   *
+   * @param Uploadcare_Api $api
+   */
+  public function __construct(Uploadcare_Api $api) {
+    $this->api = $api;
+  }
+
+  /**
+   * Returns <script> sections to include Uploadcare widget
+   *
+   * @param string $version Uploadcare version
+   * @return string
+   */
+  public function getScriptTag($version = null) {
+    $result = sprintf('<script>UPLOADCARE_PUBLIC_KEY = "%s";</script>', $this->api->getPublicKey());
+    $result .= sprintf('<script async="async" src="%s"></script>', $this->getScriptSrc($version));
+    return $result;
+  }
+
+  /**
+   * Return url for javascript widget.
+   * If no version is provided method will use default(current) version
+   *
+   * @param string $version Version of Uploadcare.com widget
+   * @return string
+   */
+  public function getScriptSrc($version = null) {
+    if (!$version) {
+      $version = $this->version;
+    }
+    return sprintf('https://ucarecdn.com/widget/%s/uploadcare/uploadcare-%s.min.js', $version, $version);
+  }
+
+  /**
+   * Gets input tag to use with widget
+   *
+   * @param string $name Input name
+   * @param array $attribs Custom attributes to include
+   * @return string
+   */
+  public function getInputTag($name, $attribs = array()) {
+    $to_compile = array();
+    foreach ($attribs as $key => $value) {
+      $to_compile[] = sprintf('%s="%s"', $key, $value);
+    }
+    return sprintf('<input type="hidden" role="uploadcare-uploader" name="%s" data-upload-url-base="" %s />', $name, join(' ', $to_compile));
+  }
+}

lib/ckeditor4/plugins/uploadcare/uploadcare-php/uploadcare/lib/5.3-5.4/Api.php

@@ -0,0 +1,298 @@
+<?php
+namespace Uploadcare;
+
+class Api
+{
+  /**
+   * Uploadcare public key
+   *
+   * @var string
+   */
+  private $public_key = null;
+
+  /**
+   * Uploadcare secret key
+   *
+   * @var string
+   */
+  private $secret_key = null;
+
+  /**
+   * API host for requests
+   *
+   * @var string
+   */
+  private $api_host = 'api.uploadcare.com';
+
+  /**
+   * Widget instance.
+   *
+   * @var Widget
+   */
+  public $widget = null;
+
+  /**
+   * Uploader instance
+   *
+   * @var Uploader
+   */
+  public $uploader = null;
+
+  /**
+   * Uploadcare library version
+   *
+   * @var string
+   */
+  public $version = '1.0.2/5.3';
+
+  /**
+   * Constructor
+   *
+   * @param string $public_key A public key given by Uploadcare.com
+   * @param string $secret_key A private (secret) key given by Uploadcare.com
+   * @return void
+   */
+  public function __construct($public_key, $secret_key)
+  {
+    $this->public_key = $public_key;
+    $this->secret_key = $secret_key;
+    $this->widget = new Widget($this);
+    $this->uploader = new Uploader($this);
+  }
+
+  /**
+   * Returns public key
+   *
+   * @return string
+   */
+  public function getPublicKey()
+  {
+    return $this->public_key;
+  }
+
+  /**
+   * Return an array of File objects to work with.
+   *
+   * @param integer $page Page to be shown.
+   * @return array
+   */
+  public function getFileList($page = 1)
+  {
+    $data = $this->__preparedRequest(API_TYPE_FILES, REQUEST_TYPE_GET, array('page' => $page));
+    $files_raw = (array)$data->results;
+    $result = array();
+    foreach ($files_raw as $file_raw) {
+      $result[] = new File($file_raw->file_id, $this);
+    }
+    return $result;
+  }
+
+  /**
+   * Get info about pagination.
+   *
+   * @param integer $page
+   * @return array
+   */
+  public function getFilePaginationInfo($page = 1)
+  {
+    $data = (array)$this->__preparedRequest(API_TYPE_FILES, REQUEST_TYPE_GET, array('page' => $page));
+    unset($data['results']);
+    return $data;
+  }
+
+  /**
+   * Run raw request to REST.
+   *
+   * @param string $method Request method: GET, POST, HEAD, OPTIONS, PUT, etc
+   * @param string $path Path to request
+   * @param string $data Array of data to send.
+   * @param string $headers Additonal headers.
+   * @return array
+   */
+  public function request($method, $path, $data = array(), $headers = array())
+  {
+    $ch = curl_init(sprintf('https://%s%s', $this->api_host, $path));
+    $this->__setRequestType($ch, $method);
+    $this->__setHeaders($ch, $headers, $data);
+
+    $data = curl_exec($ch);
+    if ($data === false) {
+      throw new \Exception(curl_error($ch));
+    }
+    $ch_info = curl_getinfo($ch);
+    if ($method == REQUEST_TYPE_DELETE) {
+      if ($ch_info['http_code'] != 204) {
+        throw new \Exception('Request returned unexpected http code '.$ch_info['http_code'].'. '.$data);
+      }
+    } else {
+      if ($ch_info['http_code'] != 200) {
+        throw new \Exception('Request returned unexpected http code '.$ch_info['http_code'].'. '.$data);
+      }
+    }
+    curl_close($ch);
+    if ($this->public_key == 'demopublickey' || $this->secret_key == 'demoprivatekey') {
+      trigger_error('You are using the demo account. Please get an Uploadcare account at https://uploadcare.com/accounts/create/', E_USER_WARNING);
+    }
+    return json_decode($data);
+  }
+
+  /**
+   * Make request to API.
+   * Throws Exception if not http code 200 was returned.
+   * If http code 200 it will parse returned data form request as JSON.
+   *
+   * @param string $type Construct type. Url will be generated using this params. Options: store
+   * @param string $request_type Request type. Options: get, post, put, delete.
+   * @param array $params Additional parameters for requests as array.
+   * @throws Exception
+   * @return array
+   */
+  public function __preparedRequest($type, $request_type = REQUEST_TYPE_GET, $params = array())
+  {
+    $url = $this->__getUrl($type, $params);
+
+    $ch = $this->__initRequest($type, $params);
+    $this->__setRequestType($ch, $request_type);
+    $this->__setHeaders($ch);
+
+    $data = curl_exec($ch);
+    $ch_info = curl_getinfo($ch);
+    if ($request_type == REQUEST_TYPE_DELETE) {
+      if ($ch_info['http_code'] != 204) {
+        throw new \Exception('Request returned unexpected http code '.$ch_info['http_code'].'. '.$data);
+      }
+    } else {
+      if ($ch_info['http_code'] != 200) {
+        throw new \Exception('Request returned unexpected http code '.$ch_info['http_code'].'. '.$data);
+      }
+    }
+    curl_close($ch);
+    if ($this->public_key == 'demopublickey' || $this->secret_key == 'demoprivatekey') {
+      trigger_error('You are using the demo account. Please get an Uploadcare account at https://uploadcare.com/accounts/create/', E_USER_WARNING);
+    }
+    return json_decode($data);
+  }
+
+  /**
+   * Inits curl request and rerturn handler
+   *
+   * @param string $type Construct type. Url will be generated using this params. Options: store
+   * @param array $params Additional parameters for requests as array.
+   * @return resource
+   */
+  private function __initRequest($type, $params = array())
+  {
+    $url = $this->__getUrl($type, $params);
+    return $ch = curl_init($url);
+  }
+
+  /**
+   * Return url to send request to.
+   * Throws Exception if wrong type is provided or parameters missing.
+   *
+   * @param string $type Construct type.
+   * @param array $params Additional parameters for requests as array.
+   * @throws Exception
+   * @return string
+   */
+  private function __getUrl($type, $params = array())
+  {
+    switch ($type) {
+      case API_TYPE_RAW:
+        return sprintf('https://%s/', $this->api_host);
+      case API_TYPE_ACCOUNT:
+        return sprintf('https://%s/account/', $this->api_host);
+      case API_TYPE_FILES:
+        return sprintf('https://%s/files/?page=%s', $this->api_host, $params['page']);
+      case API_TYPE_STORE:
+        if (array_key_exists(UC_PARAM_FILE_ID, $params) == false) {
+          throw new \Exception('Please provide "store_id" param for request');
+        }
+        return sprintf('https://%s/files/%s/storage/', $this->api_host, $params['file_id']);
+      case API_TYPE_FILE:
+        if (array_key_exists(UC_PARAM_FILE_ID, $params) == false) {
+          throw new \Exception('Please provide "store_id" param for request');
+        }
+        return sprintf('https://%s/files/%s/', $this->api_host, $params['file_id']);
+      default:
+        throw new \Exception('No api url type is provided for request. Use store, or appropriate constants.');
+    }
+  }
+
+  /**
+   * Set request type.
+   * If request type is wrong an Exception will be thrown.
+   *
+   * @param resource $ch. Curl resource.
+   * @param string $type Request type. Options: get, post, put, delete.
+   * @throws Exception
+   * @return void
+   */
+  private function __setRequestType($ch, $type = REQUEST_TYPE_GET)
+  {
+    switch ($type) {
+      case REQUEST_TYPE_GET:
+      case 'GET':
+        break;
+      case REQUEST_TYPE_POST:
+      case 'POST':
+        curl_setopt($ch, CURLOPT_POST, true);
+        break;
+      case REQUEST_TYPE_PUT:
+      case 'PUT':
+        curl_setopt($ch, CURLOPT_PUT, true);
+        break;
+      case REQUEST_TYPE_DELETE:
+      case 'DELETE':
+        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'DELETE');
+        break;
+      case REQUEST_TYPE_HEAD:
+      case 'HEAD':
+        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'HEAD');
+        break;
+      case REQUEST_TYPE_OPTIONS:
+      case 'OPTIONS':
+        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'OPTIONS');
+        break;
+      default:
+        throw new \Exception('No request type is provided for request. Use post, put, delete, get or appropriate constants.');
+    }
+  }
+
+  /**
+   * Set all the headers for request and set returntrasfer.
+   *
+   * @param resource $ch. Curl resource.
+   * @param array $headers additional headers.
+   * @param array $data Data array.
+   * @return void
+   */
+  private function __setHeaders($ch, $add_headers = array(), $data = array())
+  {
+    $content_length = 0;
+    if (count($data)) {
+      $content_length = strlen(http_build_query($data));
+    }
+    $headers = array(
+        sprintf('Host: %s', $this->api_host),
+        sprintf('Authorization: Uploadcare.Simple %s:%s', $this->public_key, $this->secret_key),
+        'Content-Type: application/json',
+        'Content-Length: '.$content_length,
+        'User-Agent: PHP Uploadcare Module '.$this->version,
+        sprintf('Date: %s', date('Y-m-d H:i:s')),
+    ) + $add_headers;
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
+  }
+
+  /**
+   * Get object of File class by file_id
+   *
+   * @param string $file_id Uploadcare file_id
+   * @return File
+   */
+  public function getFile($file_id)
+  {
+    return new File($file_id, $this);
+  }
+}

lib/ckeditor4/plugins/uploadcare/uploadcare-php/uploadcare/lib/5.3-5.4/File.php

@@ -0,0 +1,316 @@
+<?php
+namespace Uploadcare;
+
+class File
+{
+  /**
+   * Uploadcare cdn host
+   *
+   * @var string
+   */
+  private $cdn_host = 'ucarecdn.com';
+
+  /**
+   * Uploadcare file id
+   *
+   * @var string
+   */
+  private $file_id = null;
+
+  /**
+   * Operations and params for operations: crop, resize, scale_crop, effect.
+   *
+   * @var array
+   */
+  private $operations = array();
+
+  /**
+   * Uploadcare class instance.
+   *
+   * @var Api
+  */
+  private $api = null;
+
+  /**
+   * Operations list
+   */
+  private $operation_list = array('crop', 'resize', 'scale_crop', 'effect');
+
+  /**
+   * Cached data
+   *
+   * @var array
+  */
+  private $cached_data = null;
+
+  /**
+   * Constructs an object for CDN file with specified ID
+   *
+   * @param string $file_id Uploadcare file_id
+   * @param Uploadcare $api Uploadcare class instance
+   */
+  public function __construct($file_id, Api $api)
+  {
+    $this->file_id = $file_id;
+    $this->api = $api;
+  }
+
+  public function __get($name)
+  {
+    if ($name == 'data') {
+      if (!$this->cached_data) {
+        $this->cached_data = (array)$this->api->__preparedRequest(API_TYPE_FILE, REQUEST_TYPE_GET, array('file_id' => $this->file_id));
+      }
+      return $this->cached_data;
+    }
+  }
+
+  /**
+   * @return string
+   */
+  public function __toString()
+  {
+    return $this->getUrl();
+  }
+
+  /**
+   * Return file_id for this file
+   *
+   * @return string
+   */
+  public function getFileId()
+  {
+    return $this->file_id;
+  }
+
+  /**
+   * Try to store file.
+   *
+   * @param boolean $check_status Check upload status?
+   * @return array
+   */
+  public function store()
+  {
+    return $this->api->__preparedRequest(API_TYPE_STORE, REQUEST_TYPE_POST, array('file_id' => $this->file_id));
+  }
+
+  /**
+   * Delete file
+   *
+   * @return array
+   */
+  public function delete()
+  {
+    return $this->api->__preparedRequest(API_TYPE_FILE, REQUEST_TYPE_DELETE, array('file_id' => $this->file_id));
+  }
+
+  /**
+   * Get url of original image
+   *
+   * @param string $postfix
+   * @return string
+   */
+  public function getUrl($postfix = null)
+  {
+    $url = sprintf('https://%s/%s/', $this->cdn_host, $this->file_id);
+
+    $operations = array();
+
+    foreach ($this->operations as $i => $operation_item) {
+      $part = array();
+      foreach (array_keys($operation_item) as $operation_type) {
+        $operation_params = $operation_item[$operation_type];
+        $part[] = $operation_type;
+        switch ($operation_type) {
+          case 'crop':
+            $part = $this->__addPartSize($part, $operation_params);
+            $part = $this->__addPartCenter($part, $operation_params);
+            $part = $this->__addPartFillColor($part, $operation_params);
+            break;
+          case 'resize':
+            $part = $this->__addPartSize($part, $operation_params);
+            break;
+          case 'scale_crop':
+            $part = $this->__addPartSize($part, $operation_params);
+            $part = $this->__addPartCenter($part, $operation_params);
+            break;
+          case 'effect':
+            $part = $this->__addPartEffect($part, $operation_params);
+            break;
+          case 'custom':
+            $part = array($operation_params);
+            break;
+        }
+        $part_str = join('/', $part);
+        $operations[] = $part_str;
+      }
+    }
+
+    if (count($operations)) {
+      $operations_part = join('/-/', $operations);
+      return $url.'-/'.$operations_part.'/'.$postfix;
+    } else {
+      return $url.$postfix;
+    }
+  }
+
+  /**
+   * Get image tag
+   *
+   * @param string $postfix File path postfix
+   * @param array $attrs additional attributes
+   * @return string
+   */
+  public function getImgTag($postfix = null, $attribs = array())
+  {
+    $to_compile = array();
+    foreach ($attribs as $key => $value) {
+      $to_compile[] = sprintf('%s="%s"', $key, $value);
+    }
+    return sprintf('<img src="%s" %s />', $this->getUrl(), join(' ', $to_compile));
+  }
+
+  /**
+   * Get object with cropped parameters.
+   *
+   * @param integer $width Crop width
+   * @param integer $height Crop height
+   * @param boolean $center Center crop? true or false (default false).
+   * @param string $fill_color Fill color. If nothig is provided just use false (default false).
+   * @return File
+   */
+  public function crop($width, $height, $center = false, $fill_color = false)
+  {
+    $result = clone $this;
+    $result->operations[]['crop'] = array(
+        'width' => $width,
+        'height' => $height,
+        'center' => $center,
+        'fill_color' => $fill_color,
+    );
+    return $result;
+  }
+
+  /**
+   * Get object with resized parameters.
+   * Provide width or height or both.
+   * If not width or height are provided exceptions will be thrown!
+   *
+   * @param integer $width Resized image width. Provide false if you resize proportionally.
+   * @param integer $height Resized image height. Provide false if you resize proportionally.
+   * @throws \Exception
+   * @return File
+   */
+  public function resize($width = false, $height = false)
+  {
+    $result = clone $this;
+    if (!$width && !$height) {
+      throw new \Exception('Please, provide at least width or height for resize');
+    }
+    $result->operations[]['resize'] = array(
+        'width' => $width,
+        'height' => $height,
+    );
+    return $result;
+  }
+
+  /**
+   * Get object with cropped parameters.
+   *
+   * @param integer $width Crop width
+   * @param integer $height Crop height
+   * @param boolean $center Center crop? true or false (default false).
+   * @return File
+   */
+  public function scaleCrop($width, $height, $center = false)
+  {
+    $result = clone $this;
+    $result->operations[]['scale_crop'] = array(
+        'width' => $width,
+        'height' => $height,
+        'center' => $center,
+    );
+    return $result;
+  }
+
+  /**
+   * Apply effect
+   *
+   * @param string $effect Effect name
+   * @return File
+   */
+  public function effect($effect)
+  {
+    $result = clone $this;
+    $result->operations[]['effect'] = $effect;
+    return $result;
+  }
+
+  /**
+   * Add any custom operation.
+   *
+   * @param string $operation
+   */
+  public function op($operation)
+  {
+    $result = clone $this;
+    $result->operations[]['custom'] = $operation;
+    return $result;
+  }
+
+  /**
+   * Adds part with size for operations
+   *
+   * @param array $part
+   * @param array $params
+   * @return array
+   */
+  private function __addPartSize($part, $params)
+  {
+    $part[] = sprintf('%sx%s', $params['width'], $params['height']);
+    return $part;
+  }
+
+  /**
+   * Adds part with center for operations
+   *
+   * @param array $part
+   * @param array $params
+   * @return array
+   */
+  private function __addPartCenter($part, $params)
+  {
+    if ($params['center'] !== false) {
+      $part[] = 'center';
+    }
+    return $part;
+  }
+
+  /**
+   * Adds part with fill color for operations
+   *
+   * @param array $part
+   * @param array $params
+   * @return array
+   */
+  private function __addPartFillColor($part, $params)
+  {
+    if ($params['fill_color'] !== false) {
+      $part[] = $params['fill_color'];
+    }
+    return $part;
+  }
+
+  /**
+   * Adds part with effect for operations
+   *
+   * @param array $part
+   * @param string $effect
+   * @return array
+   */
+  private function __addPartEffect($part, $effect)
+  {
+    $part[] = $effect;
+    return $part;
+  }
+}

lib/ckeditor4/plugins/uploadcare/uploadcare-php/uploadcare/lib/5.3-5.4/Uploadcare.php

@@ -0,0 +1,20 @@
+<?php
+define('API_TYPE_RAW', 'raw');
+define('API_TYPE_ACCOUNT', 'account');
+define('API_TYPE_FILES', 'files');
+define('API_TYPE_FILE', 'file');
+define('API_TYPE_STORE', 'store');
+
+define('REQUEST_TYPE_POST', 'post');
+define('REQUEST_TYPE_PUT', 'put');
+define('REQUEST_TYPE_DELETE', 'delete');
+define('REQUEST_TYPE_GET', 'get');
+define('REQUEST_TYPE_HEAD', 'head');
+define('REQUEST_TYPE_OPTIONS', 'options');
+
+define('UC_PARAM_FILE_ID', 'file_id');
+
+require_once dirname(__FILE__).'/Api.php';
+require_once dirname(__FILE__).'/File.php';
+require_once dirname(__FILE__).'/Widget.php';
+require_once dirname(__FILE__).'/Uploader.php';

lib/ckeditor4/plugins/uploadcare/uploadcare-php/uploadcare/lib/5.3-5.4/Uploader.php

@@ -0,0 +1,238 @@
+<?php
+namespace Uploadcare;
+
+class Uploader
+{
+  /**
+   * Base upload host
+   *
+   * @var string
+   */
+  private $host = 'upload.uploadcare.com';
+
+  /**
+   * Api instance
+   *
+   * @var Api
+   */
+  private $api = null;
+
+  /**
+   * Constructor
+   */
+  public function __construct(Api $api)
+  {
+    $this->api = $api;
+  }
+
+  /**
+   * Check file status.
+   * Return array of json data
+   *
+   * @param string $file_id
+   * @return array
+   */
+  public function status($token)
+  {
+    $data = array(
+        'token' => $token,
+    );
+    $ch = $this->__initRequest('status', $data);
+    $this->__setHeaders($ch);
+    $data = $this->__runRequest($ch);
+    return $data;
+  }
+
+  /**
+   * Upload file from url and get File instance
+   *
+   * @param string $url An url of file to be uploaded.
+   * @return File
+   */
+  public function fromUrl($url, $check_status = true, $timeout = 1, $max_attempts = 5)
+  {
+    $data = array(
+        '_' => time(),
+        'source_url' => $url,
+        'pub_key' => $this->api->getPublicKey(),
+    );
+    $ch = $this->__initRequest('from_url', $data);
+    $this->__setHeaders($ch);
+
+    $data = $this->__runRequest($ch);
+    $token = $data->token;
+
+    if ($check_status) {
+      $success = false;
+      $attempts = 0;
+      while (!$success) {
+        $data = $this->status($token);
+        if ($data->status == 'success') {
+          $success = true;
+        }
+        if ($attempts == $max_attempts) {
+          throw new \Exception('Cannot store file, max attempts reached, upload is not successful');
+        }
+        sleep($timeout);
+        $attempts++;
+      }
+    } else {
+      return $token;
+    }
+    $file_id = $data->file_id;
+
+    return new File($file_id, $this->api);
+  }
+
+  /**
+   * Upload file from local path.
+   *
+   * @param string $path
+   * @return File
+   */
+  public function fromPath($path)
+  {
+    $data = array(
+        'UPLOADCARE_PUB_KEY' => $this->api->getPublicKey(),
+        'file' => '@'.$path,
+    );
+    $ch = $this->__initRequest('base');
+    $this->__setRequestType($ch);
+    $this->__setData($ch, $data);
+    $this->__setHeaders($ch);
+
+    $data = $this->__runRequest($ch);
+    $file_id = $data->file;
+    return new File($file_id, $this->api);
+  }
+
+  /**
+   * Upload file from file pointer
+   *
+   * @param resourse $fp
+   * @return File
+   */
+  public function fromResource($fp)
+  {
+    $tmpfile = tempnam(sys_get_temp_dir(), 'ucr');
+    $temp = fopen($tmpfile, 'w');
+    while (!feof($fp)) {
+      fwrite($temp, fread($fp, 8192));
+    }
+    fclose($temp);
+    fclose($fp);
+
+    $data = array(
+        'UPLOADCARE_PUB_KEY' => $this->api->getPublicKey(),
+        'file' => '@'.$tmpfile,
+    );
+    $ch = $this->__initRequest('base');
+    $this->__setRequestType($ch);
+    $this->__setData($ch, $data);
+    $this->__setHeaders($ch);
+
+    $data = $this->__runRequest($ch);
+    $file_id = $data->file;
+    return new File($file_id, $this->api);
+  }
+
+  /**
+   * Upload file from string using mime-type.
+   *
+   * @param string $content
+   * @param string $mime_type
+   * @return File
+   */
+  public function fromContent($content, $mime_type)
+  {
+    $tmpfile = tempnam(sys_get_temp_dir(), 'ucr');
+    $temp = fopen($tmpfile, 'w');
+    fwrite($temp, $content);
+    fclose($temp);
+
+    $data = array(
+        'UPLOADCARE_PUB_KEY' => $this->api->getPublicKey(),
+        'file' => sprintf('@%s;type=%s', $tmpfile, $mime_type),
+    );
+    $ch = $this->__initRequest('base');
+    $this->__setRequestType($ch);
+    $this->__setData($ch, $data);
+    $this->__setHeaders($ch);
+
+    $data = $this->__runRequest($ch);
+    $file_id = $data->file;
+    return new File($file_id, $this->api);
+  }
+
+  /**
+   * Init upload request and return curl resource
+   *
+   * @param array $data
+   * @return resource
+   */
+  private function __initRequest($type, $data = null)
+  {
+    $url = sprintf('https://%s/%s/', $this->host, $type);
+    if (is_array($data)) {
+      $url = sprintf('%s?%s', $url, http_build_query($data));
+    }
+    $ch = curl_init($url);
+    return $ch;
+  }
+
+  /**
+   * Set request type for curl resrouce
+   *
+   * @param resource $ch
+   * @return void
+   */
+  private function __setRequestType($ch)
+  {
+    curl_setopt($ch, CURLOPT_POST, true);
+  }
+
+  /**
+   * Set all the headers for request and set returntrasfer.
+   *
+   * @param resource $ch. Curl resource.
+   * @return void
+   */
+  private function __setHeaders($ch)
+  {
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
+    'User-Agent: PHP Uploadcare Module '.$this->api->version,
+    ));
+  }
+
+  /**
+   * Set data to be posted on request
+   *
+   * @param resource $ch. Curl resource
+   * @param array $data
+   * @return void
+   */
+  private function __setData($ch, $data = array())
+  {
+    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
+  }
+
+  /**
+   * Run prepared curl request.
+   * Throws Exception of not 200 http code
+   *
+   * @param resource $ch. Curl resource
+   * @throws Exception
+   * @return array
+   */
+  private function __runRequest($ch)
+  {
+    $data = curl_exec($ch);
+    $ch_info = curl_getinfo($ch);
+    if ($ch_info['http_code'] != 200) {
+      throw new \Exception('Request returned unexpected http code '.$ch_info['http_code'].'. '.$data);
+    }
+    curl_close($ch);
+    return json_decode($data);
+  }
+}

lib/ckeditor4/plugins/uploadcare/uploadcare-php/uploadcare/lib/5.3-5.4/Widget.php

@@ -0,0 +1,72 @@
+<?php
+namespace Uploadcare;
+
+class Widget
+{
+  /**
+   * Api instance
+   *
+   * @var Api
+   */
+  private $api = null;
+
+  /**
+   * Uploadcare widget version
+   * @var string
+   */
+  private $version = '0.6.3';
+
+  /**
+   * Constructor
+   *
+   * @param Api $api
+   */
+  public function __construct(Api $api)
+  {
+    $this->api = $api;
+  }
+
+  /**
+   * Returns <script> sections to include Uploadcare widget
+   *
+   * @param string $version Uploadcare version
+   * @return string
+   */
+  public function getScriptTag($version = null)
+  {
+    $result = sprintf('<script>UPLOADCARE_PUBLIC_KEY = "%s";</script>', $this->api->getPublicKey());
+    $result .= sprintf('<script async="async" src="%s"></script>', $this->getScriptSrc($version));
+    return $result;
+  }
+
+  /**
+   * Return url for javascript widget.
+   * If no version is provided method will use default(current) version
+   *
+   * @param string $version Version of Uploadcare.com widget
+   * @return string
+   */
+  public function getScriptSrc($version = null)
+  {
+    if (!$version) {
+      $version = $this->version;
+    }
+    return sprintf('https://ucarecdn.com/widget/%s/uploadcare/uploadcare-%s.min.js', $version, $version);
+  }
+
+  /**
+   * Gets input tag to use with widget
+   *
+   * @param string $name Input name
+   * @param array $attribs Custom attributes to include
+   * @return string
+   */
+  public function getInputTag($name, $attribs = array())
+  {
+    $to_compile = array();
+    foreach ($attribs as $key => $value) {
+      $to_compile[] = sprintf('%s="%s"', $key, $value);
+    }
+    return sprintf('<input type="hidden" role="uploadcare-uploader" name="%s" data-upload-url-base="" %s />', $name, join(' ', $to_compile));
+  }
+}