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<?php
// phpcs:disable WordPress.WP.AlternativeFunctions.file_system_operations_fclose, WordPress.WP.AlternativeFunctions.file_system_operations_fopen, WordPress.WP.AlternativeFunctions.file_system_operations_fwrite, WordPress.WP.AlternativeFunctions.file_system_operations_fgets, WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents, WordPress.WP.AlternativeFunctions.file_system_operations_mkdir, WordPress.WP.AlternativeFunctions.file_system_operations_fread, WordPress.WP.AlternativeFunctions.file_system_operations_chmod, WordPress.WP.AlternativeFunctions.file_system_operations_fputs, WordPress.WP.AlternativeFunctions.file_system_operations_is_writeable, WordPress.WP.AlternativeFunctions.file_system_operations_chown, WordPress.WP.AlternativeFunctions.file_system_operations_chgrp, WordPress.WP.AlternativeFunctions.file_system_operations_touch -- Native PHP fileystem function is used for direct control and performance because it can bypass additional layers of abstraction so that no overhead from the WordPress filesystem API's internal handling
if (!defined('ABSPATH')) die('No direct access allowed.');

if (!class_exists('UpdraftPlus_BackupModule')) updraft_try_include_file('methods/backup-module.php', 'require_once');

class UpdraftPlus_BackupModule_openstack_base extends UpdraftPlus_BackupModule {

protected $chunk_size;

protected $client;
	
	protected $method;

protected $desc;

protected $long_desc;

protected $img_url;

public function __construct($method, $desc, $long_desc = null, $img_url = '') {
		$this->method = $method;
		$this->desc = $desc;
		$this->long_desc = (is_string($long_desc)) ? $long_desc : $desc;
		$this->img_url = $img_url;
	}

public function backup($backup_array) {

global $updraftplus;

$default_chunk_size = (defined('UPDRAFTPLUS_UPLOAD_CHUNKSIZE') && UPDRAFTPLUS_UPLOAD_CHUNKSIZE > 0) ? max(UPDRAFTPLUS_UPLOAD_CHUNKSIZE, 1048576) : 5242880;

$this->chunk_size = $updraftplus->jobdata_get('openstack_chunk_size', $default_chunk_size);
		
		$opts = $this->get_options();

$this->container = $opts['path'];

try {
			$storage = $this->get_openstack_service($opts, UpdraftPlus_Options::get_updraft_option('updraft_ssl_useservercerts'), UpdraftPlus_Options::get_updraft_option('updraft_ssl_disableverify'));
		} catch (AuthenticationError $e) {
			$updraftplus->log($this->desc.' authentication failed ('.$e->getMessage().')');
			/* translators: %s: Remote storage method */
			$updraftplus->log(sprintf(__('%s authentication failed', 'updraftplus'), $this->desc).' ('.$e->getMessage().')', 'error');
			return false;
		} catch (Exception $e) {
			$updraftplus->log($this->desc.' error - failed to access the container ('.$e->getMessage().') (line: '.$e->getLine().', file: '.$e->getFile().')');
			/* translators: %s: Remote storage method */
			$updraftplus->log(sprintf(__('%s error - failed to access the container', 'updraftplus'), $this->desc).' ('.$e->getMessage().')', 'error');
			return false;
		}
		// Get the container
		try {
			$this->container_object = $storage->getContainer($this->container);
		} catch (Exception $e) {
			$updraftplus->log('Could not access '.$this->desc.' container ('.get_class($e).', '.$e->getMessage().') (line: '.$e->getLine().', file: '.$e->getFile().')');
			/* translators: %s: Remote storage method */
			$updraftplus->log(sprintf(__('Could not access %s container', 'updraftplus'), $this->desc).' ('.get_class($e).', '.$e->getMessage().')', 'error');
			return false;
		}

foreach ($backup_array as $file) {
		
			$file_key = 'status_'.md5($file);
			$file_status = $this->jobdata_get($file_key, null, 'openstack_'.$file_key);
			if (is_array($file_status) && !empty($file_status['chunks']) && !empty($file_status['chunks'][1]['size'])) $this->chunk_size = $file_status['chunks'][1]['size'];
		
			// First, see the object's existing size (if any)
			$uploaded_size = $this->get_remote_size($file);

try {
				if (1 === $updraftplus->chunked_upload($this, $file, $this->method."://".$this->container."/$file", $this->desc, $this->chunk_size, $uploaded_size)) {
					try {
						if (false !== ($data = fopen($updraftplus->backups_dir_location().'/'.$file, 'r+'))) {
							$this->container_object->uploadObject($file, $data);
							$updraftplus->log($this->desc." regular upload: success");
							$updraftplus->uploaded_file($file);
						} else {
							throw new Exception('uploadObject failed: fopen failed');
						}
					} catch (Exception $e) {
						$this->log("regular upload: failed ($file) (".$e->getMessage().")");
						$this->log("$file: ".sprintf(__('Error: Failed to upload', 'updraftplus')), 'error');
					}
				}
			} catch (Exception $e) {
				$updraftplus->log($this->desc.' error - failed to upload file'.' ('.$e->getMessage().') (line: '.$e->getLine().', file: '.$e->getFile().')');
				/* translators: %s: Remote storage method */
				$updraftplus->log(sprintf(__('%s error - failed to upload file', 'updraftplus'), $this->desc).' ('.$e->getMessage().')', 'error');
				return false;
			}
		}

return array('object' => $this->container_object, 'orig_path' => $opts['path'], 'container' => $this->container);

}

private function get_remote_size($file) {
		try {
			$response = $this->container_object->getClient()->head($this->container_object->getUrl($file))->send();
			$response_object = $this->container_object->dataObject()->populateFromResponse($response)->setName($file);
			return $response_object->getContentLength();
		} catch (Exception $e) {
			// Allow caller to distinguish between zero-sized and not-found
			return false;
		}
	}

/**
	 * This function lists the files found in the configured storage location
	 *
	 * @param  String $match a substring to require (tested via strpos() !== false)
	 *
	 * @return Array - each file is represented by an array with entries 'name' and (optional) 'size'
	 */
	public function listfiles($match = 'backup_') {
		$opts = $this->get_options();
		$container = $opts['path'];

if (empty($opts['user']) || (empty($opts['apikey']) && empty($opts['password']))) return new WP_Error('no_settings', __('No settings were found', 'updraftplus'));

try {
			$storage = $this->get_openstack_service($opts, UpdraftPlus_Options::get_updraft_option('updraft_ssl_useservercerts'), UpdraftPlus_Options::get_updraft_option('updraft_ssl_disableverify'));
		} catch (Exception $e) {
			/* translators: %s: Remote storage method */
			return new WP_Error('no_access', sprintf(__('%s error - failed to access the container', 'updraftplus'), $this->desc).' ('.$e->getMessage().')');
		}

// Get the container
		try {
			$this->container_object = $storage->getContainer($container);
		} catch (Exception $e) {
			/* translators: %s: Remote storage method */
			return new WP_Error('no_access', sprintf(__('%s error - failed to access the container', 'updraftplus'), $this->desc).' ('.$e->getMessage().')');
		}

$results = array();
		$marker = '';
		$page_size = 1000;
		try {
			// http://php-opencloud.readthedocs.io/en/latest/services/object-store/objects.html#list-objects-in-a-container
			while (null !== $marker) {

$params = array(
					'prefix' => $match,
					'limit' => $page_size,
					'marker' => $marker
				);
				
				$objects = $this->container_object->objectList($params);
				
				$total = $objects->count();
				
				if (0 == $total) break;
				
				$index = 0;
				
				while (false !== ($file = $objects->offsetGet($index)) && !empty($file)) {
					$index++;
					try {
						if ((is_object($file) && !empty($file->name))) {
							$result = array('name' => $file->name);
							// Rackspace returns the size of a manifested file properly; other OpenStack implementations may not
							if (!empty($file->bytes)) {
								$result['size'] = $file->bytes;
							} else {
								$size = $this->get_remote_size($file->name);
								if (false !== $size && $size > 0) $result['size'] = $size;
							}
							$results[] = $result;
						}
					} catch (Exception $e) {
						// Catch
					}
					$marker = (!empty($file->name) && $total >= $page_size) ? $file->name : null;
				}
				
			}
		} catch (Exception $e) {
			// Catch
		}

return $results;
	}

/**
	 * Called when all chunks have been uploaded, to allow any required finishing actions to be carried out
	 *
	 * @param String $file - the basename of the file being uploaded
	 *
	 * @return Boolean - success or failure state of any finishing actions
	 */
	public function chunked_upload_finish($file) {

$chunk_path = 'chunk-do-not-delete-'.$file;
		try {

$headers = array(
				'Content-Length'    => 0,
				'X-Object-Manifest' => sprintf('%s/%s', $this->container, $chunk_path.'_')
			);
			
			$url = $this->container_object->getUrl($file);
			$this->container_object->getClient()->put($url, $headers)->send();
			return true;

} catch (Exception $e) {
			global $updraftplus;
			$updraftplus->log("Error when sending manifest (".get_class($e)."): ".$e->getMessage());
			return false;
		}
	}

/**
	 * N.B. Since we use varying-size chunks, we must be careful as to what we do with $chunk_index
	 *
	 * @param  String	$file 			 Full path for the file being uploaded
	 * @param  Resource $fp 			 File handle to read upload data from
	 * @param  Integer	$chunk_index 	 Index of chunked upload
	 * @param  Integer	$upload_size 	 Size of the upload, in bytes
	 * @param  Integer	$upload_start    How many bytes into the file the upload process has got
	 * @param  Integer	$upload_end 	 How many bytes into the file we will be after this chunk is uploaded
	 * @param  Integer	$total_file_size Total file size
	 *
	 * @return Boolean
	 */
	public function chunked_upload($file, $fp, $chunk_index, $upload_size, $upload_start, $upload_end, $total_file_size) {

global $updraftplus;

$file_key = 'status_'.md5($file);
		$file_status = $this->jobdata_get($file_key, null, 'openstack_'.$file_key);
		
		$next_chunk_size = $upload_size;
		
		$bytes_already_uploaded = 0;
		
		$last_uploaded_chunk_index = 0;
		
		// Once a chunk is uploaded, its status is set, allowing the sequence to be reconstructed
		if (is_array($file_status) && isset($file_status['chunks']) && !empty($file_status['chunks'])) {
			foreach ($file_status['chunks'] as $c_id => $c_status) {
				if ($c_id > $last_uploaded_chunk_index) $last_uploaded_chunk_index = $c_id;
				if ($chunk_index + 1 == $c_id) {
					$next_chunk_size = $c_status['size'];
				}
				$bytes_already_uploaded += $c_status['size'];
			}
		} else {
			$file_status = array('chunks' => array());
		}
		
		$this->jobdata_set($file_key, $file_status);
		
		if ($upload_start < $bytes_already_uploaded) {
			if ($next_chunk_size != $upload_size) {
				$response = new stdClass;
				$response->new_chunk_size = $upload_size;
				$response->log = false;
				return $response;
			} else {
				return 1;
			}
		}
		
		// Shouldn't be able to happen
		if ($chunk_index <= $last_uploaded_chunk_index) {
			$updraftplus->log($this->desc.": Chunk sequence error; chunk_index=$chunk_index, last_uploaded_chunk_index=$last_uploaded_chunk_index, upload_start=$upload_start, upload_end=$upload_end, file_status=".json_encode($file_status));
		}
		
		// Used to use $chunk_index here, before switching to variable chunk sizes
		$upload_remotepath = 'chunk-do-not-delete-'.$file.'_'.sprintf("%016d", $chunk_index);

$remote_size = $this->get_remote_size($upload_remotepath);

// Without this, some versions of Curl add Expect: 100-continue, which results in Curl then giving this back: curl error: 55) select/poll returned error
		// Didn't make the difference - instead we just check below for actual success even when Curl reports an error
		// $chunk_object->headers = array('Expect' => '');

if ($remote_size >= $upload_size) {
			$updraftplus->log($this->desc.": Chunk ($upload_start - $upload_end, $chunk_index): already uploaded");
		} else {
			$updraftplus->log($this->desc.": Chunk ($upload_start - $upload_end, $chunk_index): begin upload");
			// Upload the chunk
			try {
				$data = fread($fp, $upload_size);
				$time_start = microtime(true);
				$this->container_object->uploadObject($upload_remotepath, $data);
				$time_now = microtime(true);
				$time_taken = $time_now - $time_start;
				if ($next_chunk_size < 52428800 && $total_file_size > 0 && $upload_end + 1 < $total_file_size) {
					$job_run_time = $time_now - $updraftplus->job_time_ms;
					if ($time_taken < 10) {
						$upload_rate = $upload_size / max($time_taken, 0.0001);
						$upload_secs = min(floor($job_run_time), 10);
						if ($job_run_time < 15) $upload_secs = max(6, $job_run_time*0.6);
						
						// In megabytes
						$memory_limit_mb = $updraftplus->memory_check_current();
						$bytes_used = memory_get_usage();
						$bytes_free = $memory_limit_mb * 1048576 - $bytes_used;
						
						$new_chunk = max(min($upload_secs * $upload_rate * 0.9, 52428800, $bytes_free), 5242880);
						$new_chunk = $new_chunk - ($new_chunk % 5242880);
						$next_chunk_size = (int) $new_chunk;
						$updraftplus->jobdata_set('openstack_chunk_size', $next_chunk_size);
					}
				}
				
			} catch (Exception $e) {
				$updraftplus->log($this->desc." chunk upload: error: ($file / $chunk_index) (".$e->getMessage().") (line: ".$e->getLine().', file: '.$e->getFile().')');
				// Experience shows that Curl sometimes returns a select/poll error (curl error 55) even when everything succeeded. Google seems to indicate that this is a known bug.
				
				$remote_size = $this->get_remote_size($upload_remotepath);

if ($remote_size >= $upload_size) {
					$updraftplus->log("$file: Chunk now exists; ignoring error (presuming it was an apparently known curl bug)");
				} else {
					/* translators: %s: Remote storage method */
					$updraftplus->log("$file: ".sprintf(__('%s Error: Failed to upload', 'updraftplus'), $this->desc), 'error');
					return false;
				}
			}
		}
		
		$file_status['chunks'][$chunk_index]['size'] = $upload_size;

$this->jobdata_set($file_key, $file_status);
		
		if ($next_chunk_size != $upload_size) {
			$response = new stdClass;
			$response->new_chunk_size = $next_chunk_size;
			$response->log = true;
			return $response;
		}
		
		return true;
	}
	
	/**
	 * Delete a single file from the service using OpenStack API
	 *
	 * @param Array|String $files    - array of file names to delete
	 * @param Array        $data     - service object and container details
	 * @param Array        $sizeinfo - unused here
	 * @return Boolean|String - either a boolean true or an error code string
	 */
	public function delete($files, $data = false, $sizeinfo = array()) {// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $sizeinfo unused

global $updraftplus;
		if (is_string($files)) $files = array($files);

if (is_array($data)) {
			$container_object = $data['object'];
			$container = $data['container'];
		} else {
			$opts = $this->get_options();
			$container = $opts['path'];
			try {
				$storage = $this->get_openstack_service($opts, UpdraftPlus_Options::get_updraft_option('updraft_ssl_useservercerts'), UpdraftPlus_Options::get_updraft_option('updraft_ssl_disableverify'));
			} catch (AuthenticationError $e) {
				$updraftplus->log($this->desc.' authentication failed ('.$e->getMessage().')');
				/* translators: %s: Remote storage method */
				$updraftplus->log(sprintf(__('%s authentication failed', 'updraftplus'), $this->desc).' ('.$e->getMessage().')', 'error');
				return 'authentication_fail';
			} catch (Exception $e) {
				$updraftplus->log($this->desc.' error - failed to access the container ('.$e->getMessage().')');
				/* translators: %s: Remote storage method */
				$updraftplus->log(sprintf(__('%s error - failed to access the container', 'updraftplus'), $this->desc).' ('.$e->getMessage().')', 'error');
				return 'service_unavailable';
			}
			// Get the container
			try {
				$container_object = $storage->getContainer($container);
			} catch (Exception $e) {
				$updraftplus->log('Could not access '.$this->desc.' container ('.get_class($e).', '.$e->getMessage().')');
				/* translators: %s: Remote storage method */
				$updraftplus->log(sprintf(__('Could not access %s container', 'updraftplus'), $this->desc).' ('.get_class($e).', '.$e->getMessage().')', 'error');
				return 'container_access_error';
			}

}

$ret = true;
		foreach ($files as $file) {

$updraftplus->log($this->desc.": Delete remote: container=$container, path=$file");

// We need to search for chunks
			$chunk_path = "chunk-do-not-delete-".$file;

try {
				$objects = $container_object->objectList(array('prefix' => $chunk_path));
				$index = 0;
				while (false !== ($chunk = $objects->offsetGet($index)) && !empty($chunk)) {
					try {
						$name = $chunk->name;
						$container_object->dataObject()->setName($name)->delete();
						$updraftplus->log($this->desc.': Chunk deleted: '.$name);
					} catch (Exception $e) {
						$updraftplus->log($this->desc." chunk delete failed: $name: ".$e->getMessage());
					}
					$index++;
				}
			} catch (Exception $e) {
				$updraftplus->log($this->desc.' chunk delete failed: '.$e->getMessage());
			}

// Finally, delete the object itself
			try {
				$container_object->dataObject()->setName($file)->delete();
				$updraftplus->log($this->desc.': Deleted: '.$file);
			} catch (Exception $e) {
				$updraftplus->log($this->desc.' delete failed: '.$e->getMessage());
				$ret = 'file_delete_error';
			}
		}
		return $ret;
	}

public function download($file) {

global $updraftplus;

$opts = $this->get_options();

$container = untrailingslashit($opts['path']);
		$updraftplus->log($this->desc." download: ".$this->method."://$container/$file");

// Get the container
		try {
			$this->container_object = $storage->getContainer($container);
		} catch (Exception $e) {
			$updraftplus->log('Could not access '.$this->desc.' container ('.get_class($e).', '.$e->getMessage().')');
			/* translators: %s: Remote storage method */
			$updraftplus->log(sprintf(__('Could not access %s container', 'updraftplus'), $this->desc).' ('.get_class($e).', '.$e->getMessage().')', 'error');
			return false;
		}

// Get information about the object within the container
		$remote_size = $this->get_remote_size($file);
		if (false === $remote_size) {
			$updraftplus->log('Could not access '.$this->desc.' object');
			/* translators: %s: Remote storage method */
			$updraftplus->log(sprintf(__('The %s object was not found', 'updraftplus'), $this->desc), 'error');
			return false;
		}

return (!is_bool($remote_size)) ? $updraftplus->chunked_download($file, $this, $remote_size, true, $this->container_object) : false;

}

public function chunked_download($file, $headers, $container_object) {
		try {
			$dl = $container_object->getObject($file, $headers);
		} catch (Exception $e) {
			global $updraftplus;
			$updraftplus->log("$file: Failed to download (".$e->getMessage().")");
			/* translators: %s: Remote storage method */
			$updraftplus->log("$file: ".sprintf(__("%s Error", 'updraftplus'), $this->desc).": ".__('Error downloading remote file: Failed to download', 'updraftplus').' ('.$e->getMessage().")", 'error');
			return false;
		}
		return $dl->getContent();
	}

public function credentials_test_go($opts, $path, $useservercerts, $disableverify) {

if (preg_match("#^([^/]+)/(.*)$#", $path, $bmatches)) {
			$container = $bmatches[1];
			$path = $bmatches[2];
		} else {
			$container = $path;
			$path = '';
		}

if (empty($container)) {
			esc_html_e('Failure: No container details were given.', 'updraftplus');
			return;
		}

try {
			$storage = $this->get_openstack_service($opts, $useservercerts, $disableverify);
		// @codingStandardsIgnoreLine
		} catch (Guzzle\Http\Exception\ClientErrorResponseException $e) {
			$response = $e->getResponse();
			$code = $response->getStatusCode();
			$reason = $response->getReasonPhrase();
			if (401 == $code && 'Unauthorized' == $reason) {
				esc_html_e('Authorisation failed (check your credentials)', 'updraftplus');
			} else {
				echo esc_html(__('Authorisation failed (check your credentials)', 'updraftplus')." ($code:$reason)");
			}
			return;
		} catch (AuthenticationError $e) {
			/* translators: %s: Remote storage method */
			echo esc_html(sprintf(__('%s authentication failed', 'updraftplus'), $this->desc).' ('.$e->getMessage().')');
			return;
		} catch (Exception $e) {
			/* translators: %s: Remote storage method */
			echo esc_html(sprintf(__('%s authentication failed', 'updraftplus'), $this->desc).' ('.get_class($e).', '.$e->getMessage().')');
			return;
		}

try {
			$container_object = $storage->getContainer($container);
		// @codingStandardsIgnoreLine
		} catch (Guzzle\Http\Exception\ClientErrorResponseException $e) {
			$response = $e->getResponse();
			$code = $response->getStatusCode();
			$reason = $response->getReasonPhrase();
			if (404 == $code) {
				$container_object = $storage->createContainer($container);
			} else {
				echo esc_html(__('Authorisation failed (check your credentials)', 'updraftplus')." ($code:$reason)");
				return;
			}
		} catch (Exception $e) {
			/* translators: %s: Remote storage method */
			echo esc_html(sprintf(__('%s authentication failed', 'updraftplus'), $this->desc).' ('.get_class($e).', '.$e->getMessage().')');
			return;
		}

if (!is_a($container_object, 'OpenCloud\ObjectStore\Resource\Container') && !is_a($container_object, 'Container')) {
			/* translators: %s: Remote storage method */
			echo esc_html(sprintf(__('%s authentication failed', 'updraftplus'), $this->desc).' ('.get_class($container_object).')');
			return;
		}

$try_file = md5(rand()).'.txt';

try {
			$object = $container_object->uploadObject($try_file, 'UpdraftPlus test file', array('content-type' => 'text/plain'));
		} catch (Exception $e) {
			/* translators: %s: Remote storage method */
			echo esc_html(sprintf(__('%s error - we accessed the container, but failed to create a file within it', 'updraftplus'), $this->desc).' ('.get_class($e).', '.$e->getMessage().')');
			/* translators: %s: Region name */
			if (!empty($this->region)) echo ' '.esc_html(sprintf(__('Region: %s', 'updraftplus'), $this->region));
			return;
		}

$this->set_connection_status(true);
		echo esc_html(__('Success', 'updraftplus').": ".__('We accessed the container, and were able to create files within it.', 'updraftplus'));
		/* translators: %s: Region name */
		if (!empty($this->region)) echo ' '.esc_html(sprintf(__('Region: %s', 'updraftplus'), $this->region));

try {
			if (!empty($object)) {
				// One OpenStack server we tested on did not delete unless we slept... some kind of race condition at their end
				sleep(1);
				$object->delete();
			}
		} catch (Exception $e) {
			// Catch
		}

}

/**
	 * Get the pre configuration template
	 * DEVELOPER NOTES: Please don't use/call this method anymore as it is currently used by OpenStack and Cloudfiles(Rackspace) storage, and it's consider to be removed in future versions. Once OpenStack and Cloudfiles templates are CSP-compliant, this should be removed and should be placed in the class child instead of the base class.
	 *
	 * @return String - the template
	 */
	public function get_pre_configuration_template() {

global $updraftplus_admin;

$classes = $this->get_css_classes(false);
		
		?>
		<tr class="<?php echo esc_attr($classes . ' ' . $this->method . '_pre_config_container');?>">
			<td colspan="2">
				<?php
					if (!empty($this->img_url)) {
					?>
						<img alt="<?php echo esc_attr($this->long_desc); ?>" src="<?php echo esc_url(UPDRAFTPLUS_URL.$this->img_url); ?>">
					<?php
					}
					?>
				 
			<?php
			// Check requirements.
			global $updraftplus_admin;
			if (!function_exists('mb_substr')) {
				$updraftplus_admin->show_double_warning(
					''.__('Warning', 'updraftplus').': '.
					/* translators: %s: Required module name */
					sprintf(__('Your web server\'s PHP installation does not include a required module (%s).', 'updraftplus'), 'mbstring').' '.
					__('Please contact your web hosting provider\'s support.', 'updraftplus').' '.
					/* translators: 1: Remote storage method, 2: Required module name */
					sprintf(__('UpdraftPlus\'s %1$s module requires %2$s.', 'updraftplus'), $this->desc, 'mbstring').' '.
					__('Please do not file any support requests; there is no alternative.', 'updraftplus'),
					$this->method
				);
			}
			$updraftplus_admin->curl_check($this->long_desc, false, $this->method);
			echo ' ';
			$this->get_pre_configuration_middlesection_template();
			?>
			</td>
		</tr>

<?php
	}

/**
	 * Get the configuration template
	 * DEVELOPER NOTES: Please don't use/call this method anymore as it is currently used by OpenStack and Cloudfiles(Rackspace) storage, and it's consider to be removed in future versions. Once OpenStack and Cloudfiles templates are CSP-compliant, this should be removed and should be placed in the class child instead of the base class.
	 *
	 * @return String - the template, ready for substitutions to be carried out
	 */
	public function get_configuration_template() {
		ob_start();
		$template_str = ob_get_clean();
		$template_str .= $this->get_configuration_middlesection_template();
		$template_str .= $this->get_test_button_html($this->desc);
		return $template_str;
	}
}

Editing: openstack-base.php

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