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734 lines
27 KiB
PHP
734 lines
27 KiB
PHP
<?php declare(strict_types=1);
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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* Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\Util;
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use Composer\Config;
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use Composer\Downloader\MaxFileSizeExceededException;
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use Composer\IO\IOInterface;
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use Composer\Downloader\TransportException;
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use Composer\Pcre\Preg;
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use Composer\Util\Http\Response;
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use Composer\Util\Http\ProxyManager;
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/**
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* @internal
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* @author François Pluchino <francois.pluchino@opendisplay.com>
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* @author Jordi Boggiano <j.boggiano@seld.be>
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* @author Nils Adermann <naderman@naderman.de>
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*/
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class RemoteFilesystem
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{
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/** @var IOInterface */
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private $io;
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/** @var Config */
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private $config;
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/** @var string */
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private $scheme;
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/** @var int */
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private $bytesMax;
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/** @var string */
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private $originUrl;
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/** @var string */
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private $fileUrl;
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/** @var ?string */
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private $fileName;
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/** @var bool */
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private $retry = false;
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/** @var bool */
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private $progress;
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/** @var ?int */
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private $lastProgress;
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/** @var mixed[] */
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private $options = array();
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/** @var bool */
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private $disableTls = false;
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/** @var string[] */
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private $lastHeaders;
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/** @var bool */
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private $storeAuth = false;
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/** @var AuthHelper */
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private $authHelper;
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/** @var bool */
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private $degradedMode = false;
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/** @var int */
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private $redirects;
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/** @var int */
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private $maxRedirects = 20;
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/** @var ProxyManager */
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private $proxyManager;
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/**
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* Constructor.
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*
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* @param IOInterface $io The IO instance
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* @param Config $config The config
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* @param mixed[] $options The options
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* @param bool $disableTls
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* @param AuthHelper $authHelper
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*/
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public function __construct(IOInterface $io, Config $config, array $options = array(), bool $disableTls = false, AuthHelper $authHelper = null)
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{
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$this->io = $io;
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// Setup TLS options
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// The cafile option can be set via config.json
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if ($disableTls === false) {
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$this->options = StreamContextFactory::getTlsDefaults($options, $io);
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} else {
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$this->disableTls = true;
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}
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// handle the other externally set options normally.
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$this->options = array_replace_recursive($this->options, $options);
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$this->config = $config;
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$this->authHelper = $authHelper ?? new AuthHelper($io, $config);
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$this->proxyManager = ProxyManager::getInstance();
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}
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/**
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* Copy the remote file in local.
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*
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* @param string $originUrl The origin URL
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* @param string $fileUrl The file URL
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* @param string $fileName the local filename
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* @param bool $progress Display the progression
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* @param mixed[] $options Additional context options
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*
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* @return bool true
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*/
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public function copy(string $originUrl, string $fileUrl, string $fileName, bool $progress = true, array $options = array())
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{
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return $this->get($originUrl, $fileUrl, $options, $fileName, $progress);
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}
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/**
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* Get the content.
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*
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* @param string $originUrl The origin URL
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* @param string $fileUrl The file URL
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* @param bool $progress Display the progression
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* @param mixed[] $options Additional context options
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*
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* @return bool|string The content
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*/
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public function getContents(string $originUrl, string $fileUrl, bool $progress = true, array $options = array())
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{
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return $this->get($originUrl, $fileUrl, $options, null, $progress);
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}
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/**
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* Retrieve the options set in the constructor
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*
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* @return mixed[] Options
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*/
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public function getOptions()
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{
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return $this->options;
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}
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/**
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* Merges new options
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*
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* @param mixed[] $options
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* @return void
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*/
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public function setOptions(array $options)
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{
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$this->options = array_replace_recursive($this->options, $options);
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}
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/**
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* Check is disable TLS.
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*
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* @return bool
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*/
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public function isTlsDisabled()
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{
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return $this->disableTls === true;
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}
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/**
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* Returns the headers of the last request
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*
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* @return string[]
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*/
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public function getLastHeaders()
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{
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return $this->lastHeaders;
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}
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/**
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* @param string[] $headers array of returned headers like from getLastHeaders()
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* @return int|null
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*/
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public static function findStatusCode(array $headers)
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{
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$value = null;
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foreach ($headers as $header) {
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if (Preg::isMatch('{^HTTP/\S+ (\d+)}i', $header, $match)) {
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// In case of redirects, http_response_headers contains the headers of all responses
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// so we can not return directly and need to keep iterating
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$value = (int) $match[1];
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}
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}
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return $value;
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}
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/**
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* @param string[] $headers array of returned headers like from getLastHeaders()
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* @return string|null
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*/
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public function findStatusMessage(array $headers)
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{
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$value = null;
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foreach ($headers as $header) {
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if (Preg::isMatch('{^HTTP/\S+ \d+}i', $header)) {
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// In case of redirects, http_response_headers contains the headers of all responses
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// so we can not return directly and need to keep iterating
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$value = $header;
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}
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}
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return $value;
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}
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/**
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* Get file content or copy action.
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*
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* @param string $originUrl The origin URL
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* @param string $fileUrl The file URL
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* @param mixed[] $additionalOptions context options
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* @param string $fileName the local filename
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* @param bool $progress Display the progression
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*
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* @throws TransportException|\Exception
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* @throws TransportException When the file could not be downloaded
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*
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* @return bool|string
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*/
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protected function get(string $originUrl, string $fileUrl, array $additionalOptions = array(), string $fileName = null, bool $progress = true)
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{
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$this->scheme = parse_url(strtr($fileUrl, '\\', '/'), PHP_URL_SCHEME);
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$this->bytesMax = 0;
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$this->originUrl = $originUrl;
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$this->fileUrl = $fileUrl;
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$this->fileName = $fileName;
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$this->progress = $progress;
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$this->lastProgress = null;
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$retryAuthFailure = true;
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$this->lastHeaders = array();
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$this->redirects = 1; // The first request counts.
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$tempAdditionalOptions = $additionalOptions;
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if (isset($tempAdditionalOptions['retry-auth-failure'])) {
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$retryAuthFailure = (bool) $tempAdditionalOptions['retry-auth-failure'];
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unset($tempAdditionalOptions['retry-auth-failure']);
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}
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$isRedirect = false;
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if (isset($tempAdditionalOptions['redirects'])) {
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$this->redirects = $tempAdditionalOptions['redirects'];
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$isRedirect = true;
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unset($tempAdditionalOptions['redirects']);
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}
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$options = $this->getOptionsForUrl($originUrl, $tempAdditionalOptions);
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unset($tempAdditionalOptions);
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$origFileUrl = $fileUrl;
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if (isset($options['gitlab-token'])) {
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$fileUrl .= (false === strpos($fileUrl, '?') ? '?' : '&') . 'access_token='.$options['gitlab-token'];
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unset($options['gitlab-token']);
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}
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if (isset($options['http'])) {
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$options['http']['ignore_errors'] = true;
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}
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if ($this->degradedMode && strpos($fileUrl, 'http://repo.packagist.org/') === 0) {
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// access packagist using the resolved IPv4 instead of the hostname to force IPv4 protocol
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$fileUrl = 'http://' . gethostbyname('repo.packagist.org') . substr($fileUrl, 20);
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$degradedPackagist = true;
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}
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$maxFileSize = null;
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if (isset($options['max_file_size'])) {
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$maxFileSize = $options['max_file_size'];
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unset($options['max_file_size']);
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}
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$ctx = StreamContextFactory::getContext($fileUrl, $options, array('notification' => array($this, 'callbackGet')));
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$proxy = $this->proxyManager->getProxyForRequest($fileUrl);
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$usingProxy = $proxy->getFormattedUrl(' using proxy (%s)');
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$this->io->writeError((strpos($origFileUrl, 'http') === 0 ? 'Downloading ' : 'Reading ') . Url::sanitize($origFileUrl) . $usingProxy, true, IOInterface::DEBUG);
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unset($origFileUrl, $proxy, $usingProxy);
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// Check for secure HTTP, but allow insecure Packagist calls to $hashed providers as file integrity is verified with sha256
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if ((!Preg::isMatch('{^http://(repo\.)?packagist\.org/p/}', $fileUrl) || (false === strpos($fileUrl, '$') && false === strpos($fileUrl, '%24'))) && empty($degradedPackagist)) {
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$this->config->prohibitUrlByConfig($fileUrl, $this->io);
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}
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if ($this->progress && !$isRedirect) {
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$this->io->writeError("Downloading (<comment>connecting...</comment>)", false);
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}
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$errorMessage = '';
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$errorCode = 0;
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$result = false;
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set_error_handler(function ($code, $msg) use (&$errorMessage): bool {
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if ($errorMessage) {
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$errorMessage .= "\n";
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}
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$errorMessage .= Preg::replace('{^file_get_contents\(.*?\): }', '', $msg);
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return true;
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});
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$http_response_header = array();
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try {
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$result = $this->getRemoteContents($originUrl, $fileUrl, $ctx, $http_response_header, $maxFileSize);
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if (!empty($http_response_header[0])) {
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$statusCode = self::findStatusCode($http_response_header);
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if ($statusCode >= 400 && Response::findHeaderValue($http_response_header, 'content-type') === 'application/json') {
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HttpDownloader::outputWarnings($this->io, $originUrl, json_decode($result, true));
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}
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if (in_array($statusCode, array(401, 403)) && $retryAuthFailure) {
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$this->promptAuthAndRetry($statusCode, $this->findStatusMessage($http_response_header), $http_response_header);
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}
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}
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$contentLength = !empty($http_response_header[0]) ? Response::findHeaderValue($http_response_header, 'content-length') : null;
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if ($contentLength && Platform::strlen($result) < $contentLength) {
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// alas, this is not possible via the stream callback because STREAM_NOTIFY_COMPLETED is documented, but not implemented anywhere in PHP
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$e = new TransportException('Content-Length mismatch, received '.Platform::strlen($result).' bytes out of the expected '.$contentLength);
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$e->setHeaders($http_response_header);
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$e->setStatusCode(self::findStatusCode($http_response_header));
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try {
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$e->setResponse($this->decodeResult($result, $http_response_header));
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} catch (\Exception $discarded) {
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$e->setResponse($this->normalizeResult($result));
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}
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$this->io->writeError('Content-Length mismatch, received '.Platform::strlen($result).' out of '.$contentLength.' bytes: (' . base64_encode($result).')', true, IOInterface::DEBUG);
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throw $e;
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}
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} catch (\Exception $e) {
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if ($e instanceof TransportException && !empty($http_response_header[0])) {
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$e->setHeaders($http_response_header);
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$e->setStatusCode(self::findStatusCode($http_response_header));
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}
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if ($e instanceof TransportException && $result !== false) {
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$e->setResponse($this->decodeResult($result, $http_response_header));
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}
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$result = false;
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}
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if ($errorMessage && !filter_var(ini_get('allow_url_fopen'), FILTER_VALIDATE_BOOLEAN)) {
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$errorMessage = 'allow_url_fopen must be enabled in php.ini ('.$errorMessage.')';
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}
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restore_error_handler();
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if (isset($e) && !$this->retry) {
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if (!$this->degradedMode && false !== strpos($e->getMessage(), 'Operation timed out')) {
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$this->degradedMode = true;
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$this->io->writeError('');
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$this->io->writeError(array(
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'<error>'.$e->getMessage().'</error>',
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'<error>Retrying with degraded mode, check https://getcomposer.org/doc/articles/troubleshooting.md#degraded-mode for more info</error>',
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));
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return $this->get($this->originUrl, $this->fileUrl, $additionalOptions, $this->fileName, $this->progress);
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}
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throw $e;
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}
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$statusCode = null;
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$contentType = null;
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$locationHeader = null;
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if (!empty($http_response_header[0])) {
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$statusCode = self::findStatusCode($http_response_header);
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$contentType = Response::findHeaderValue($http_response_header, 'content-type');
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$locationHeader = Response::findHeaderValue($http_response_header, 'location');
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}
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// check for bitbucket login page asking to authenticate
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if ($originUrl === 'bitbucket.org'
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&& !$this->authHelper->isPublicBitBucketDownload($fileUrl)
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&& substr($fileUrl, -4) === '.zip'
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&& (!$locationHeader || substr(parse_url($locationHeader, PHP_URL_PATH), -4) !== '.zip')
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&& $contentType && Preg::isMatch('{^text/html\b}i', $contentType)
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) {
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$result = false;
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if ($retryAuthFailure) {
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$this->promptAuthAndRetry(401);
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}
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}
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// check for gitlab 404 when downloading archives
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if ($statusCode === 404
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&& in_array($originUrl, $this->config->get('gitlab-domains'), true)
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&& false !== strpos($fileUrl, 'archive.zip')
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) {
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$result = false;
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if ($retryAuthFailure) {
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$this->promptAuthAndRetry(401);
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}
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}
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// handle 3xx redirects, 304 Not Modified is excluded
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$hasFollowedRedirect = false;
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if ($statusCode >= 300 && $statusCode <= 399 && $statusCode !== 304 && $this->redirects < $this->maxRedirects) {
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$hasFollowedRedirect = true;
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$result = $this->handleRedirect($http_response_header, $additionalOptions, $result);
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}
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// fail 4xx and 5xx responses and capture the response
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if ($statusCode && $statusCode >= 400 && $statusCode <= 599) {
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if (!$this->retry) {
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if ($this->progress && !$isRedirect) {
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$this->io->overwriteError("Downloading (<error>failed</error>)", false);
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}
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$e = new TransportException('The "'.$this->fileUrl.'" file could not be downloaded ('.$http_response_header[0].')', $statusCode);
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$e->setHeaders($http_response_header);
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$e->setResponse($this->decodeResult($result, $http_response_header));
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$e->setStatusCode($statusCode);
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throw $e;
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}
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$result = false;
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}
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if ($this->progress && !$this->retry && !$isRedirect) {
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$this->io->overwriteError("Downloading (".($result === false ? '<error>failed</error>' : '<comment>100%</comment>').")", false);
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}
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// decode gzip
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if ($result && extension_loaded('zlib') && strpos($fileUrl, 'http') === 0 && !$hasFollowedRedirect) {
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try {
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$result = $this->decodeResult($result, $http_response_header);
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} catch (\Exception $e) {
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if ($this->degradedMode) {
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throw $e;
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}
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$this->degradedMode = true;
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$this->io->writeError(array(
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'',
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'<error>Failed to decode response: '.$e->getMessage().'</error>',
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'<error>Retrying with degraded mode, check https://getcomposer.org/doc/articles/troubleshooting.md#degraded-mode for more info</error>',
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));
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return $this->get($this->originUrl, $this->fileUrl, $additionalOptions, $this->fileName, $this->progress);
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}
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}
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// handle copy command if download was successful
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if (false !== $result && null !== $fileName && !$isRedirect) {
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if ('' === $result) {
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throw new TransportException('"'.$this->fileUrl.'" appears broken, and returned an empty 200 response');
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}
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$errorMessage = '';
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set_error_handler(function ($code, $msg) use (&$errorMessage): bool {
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if ($errorMessage) {
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$errorMessage .= "\n";
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}
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$errorMessage .= Preg::replace('{^file_put_contents\(.*?\): }', '', $msg);
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return true;
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});
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$result = (bool) file_put_contents($fileName, $result);
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restore_error_handler();
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if (false === $result) {
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throw new TransportException('The "'.$this->fileUrl.'" file could not be written to '.$fileName.': '.$errorMessage);
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}
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}
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if ($this->retry) {
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$this->retry = false;
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$result = $this->get($this->originUrl, $this->fileUrl, $additionalOptions, $this->fileName, $this->progress);
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if ($this->storeAuth) {
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$this->authHelper->storeAuth($this->originUrl, $this->storeAuth);
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$this->storeAuth = false;
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}
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return $result;
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}
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if (false === $result) {
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$e = new TransportException('The "'.$this->fileUrl.'" file could not be downloaded: '.$errorMessage, $errorCode);
|
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if (!empty($http_response_header[0])) {
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$e->setHeaders($http_response_header);
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}
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if (!$this->degradedMode && false !== strpos($e->getMessage(), 'Operation timed out')) {
|
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$this->degradedMode = true;
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$this->io->writeError('');
|
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$this->io->writeError(array(
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'<error>'.$e->getMessage().'</error>',
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'<error>Retrying with degraded mode, check https://getcomposer.org/doc/articles/troubleshooting.md#degraded-mode for more info</error>',
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));
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return $this->get($this->originUrl, $this->fileUrl, $additionalOptions, $this->fileName, $this->progress);
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}
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throw $e;
|
|
}
|
|
|
|
if (!empty($http_response_header[0])) {
|
|
$this->lastHeaders = $http_response_header;
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Get contents of remote URL.
|
|
*
|
|
* @param string $originUrl The origin URL
|
|
* @param string $fileUrl The file URL
|
|
* @param resource $context The stream context
|
|
* @param string[] $responseHeaders
|
|
* @param int $maxFileSize The maximum allowed file size
|
|
*
|
|
* @return string|false The response contents or false on failure
|
|
*/
|
|
protected function getRemoteContents(string $originUrl, string $fileUrl, $context, array &$responseHeaders = null, int $maxFileSize = null)
|
|
{
|
|
$result = false;
|
|
|
|
try {
|
|
$e = null;
|
|
if ($maxFileSize !== null) {
|
|
$result = file_get_contents($fileUrl, false, $context, 0, $maxFileSize);
|
|
} else {
|
|
// passing `null` to file_get_contents will convert `null` to `0` and return 0 bytes
|
|
$result = file_get_contents($fileUrl, false, $context);
|
|
}
|
|
} catch (\Throwable $e) {
|
|
}
|
|
|
|
if ($maxFileSize !== null && Platform::strlen($result) >= $maxFileSize) {
|
|
throw new MaxFileSizeExceededException('Maximum allowed download size reached. Downloaded ' . Platform::strlen($result) . ' of allowed ' . $maxFileSize . ' bytes');
|
|
}
|
|
|
|
// https://www.php.net/manual/en/reserved.variables.httpresponseheader.php
|
|
$responseHeaders = $http_response_header ?? array();
|
|
|
|
if (null !== $e) {
|
|
throw $e;
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Get notification action.
|
|
*
|
|
* @param int $notificationCode The notification code
|
|
* @param int $severity The severity level
|
|
* @param string $message The message
|
|
* @param int $messageCode The message code
|
|
* @param int $bytesTransferred The loaded size
|
|
* @param int $bytesMax The total size
|
|
*
|
|
* @return void
|
|
*
|
|
* @throws TransportException
|
|
*/
|
|
protected function callbackGet(int $notificationCode, int $severity, ?string $message, int $messageCode, int $bytesTransferred, int $bytesMax)
|
|
{
|
|
switch ($notificationCode) {
|
|
case STREAM_NOTIFY_FAILURE:
|
|
if (400 === $messageCode) {
|
|
// This might happen if your host is secured by ssl client certificate authentication
|
|
// but you do not send an appropriate certificate
|
|
throw new TransportException("The '" . $this->fileUrl . "' URL could not be accessed: " . $message, $messageCode);
|
|
}
|
|
break;
|
|
|
|
case STREAM_NOTIFY_FILE_SIZE_IS:
|
|
$this->bytesMax = $bytesMax;
|
|
break;
|
|
|
|
case STREAM_NOTIFY_PROGRESS:
|
|
if ($this->bytesMax > 0 && $this->progress) {
|
|
$progression = min(100, (int) round($bytesTransferred / $this->bytesMax * 100));
|
|
|
|
if ((0 === $progression % 5) && 100 !== $progression && $progression !== $this->lastProgress) {
|
|
$this->lastProgress = $progression;
|
|
$this->io->overwriteError("Downloading (<comment>$progression%</comment>)", false);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param positive-int $httpStatus
|
|
* @param string|null $reason
|
|
* @param string[] $headers
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function promptAuthAndRetry($httpStatus, ?string $reason = null, array $headers = array())
|
|
{
|
|
$result = $this->authHelper->promptAuthIfNeeded($this->fileUrl, $this->originUrl, $httpStatus, $reason, $headers);
|
|
|
|
$this->storeAuth = $result['storeAuth'];
|
|
$this->retry = $result['retry'];
|
|
|
|
if ($this->retry) {
|
|
throw new TransportException('RETRY');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param string $originUrl
|
|
* @param mixed[] $additionalOptions
|
|
*
|
|
* @return mixed[]
|
|
*/
|
|
protected function getOptionsForUrl(string $originUrl, array $additionalOptions)
|
|
{
|
|
$tlsOptions = array();
|
|
$headers = array();
|
|
|
|
if (extension_loaded('zlib')) {
|
|
$headers[] = 'Accept-Encoding: gzip';
|
|
}
|
|
|
|
$options = array_replace_recursive($this->options, $tlsOptions, $additionalOptions);
|
|
if (!$this->degradedMode) {
|
|
// degraded mode disables HTTP/1.1 which causes issues with some bad
|
|
// proxies/software due to the use of chunked encoding
|
|
$options['http']['protocol_version'] = 1.1;
|
|
$headers[] = 'Connection: close';
|
|
}
|
|
|
|
$headers = $this->authHelper->addAuthenticationHeader($headers, $originUrl, $this->fileUrl);
|
|
|
|
$options['http']['follow_location'] = 0;
|
|
|
|
if (isset($options['http']['header']) && !is_array($options['http']['header'])) {
|
|
$options['http']['header'] = explode("\r\n", trim($options['http']['header'], "\r\n"));
|
|
}
|
|
foreach ($headers as $header) {
|
|
$options['http']['header'][] = $header;
|
|
}
|
|
|
|
return $options;
|
|
}
|
|
|
|
/**
|
|
* @param string[] $http_response_header
|
|
* @param mixed[] $additionalOptions
|
|
* @param string|false $result
|
|
*
|
|
* @return bool|string
|
|
*/
|
|
private function handleRedirect(array $http_response_header, array $additionalOptions, $result)
|
|
{
|
|
if ($locationHeader = Response::findHeaderValue($http_response_header, 'location')) {
|
|
if (parse_url($locationHeader, PHP_URL_SCHEME)) {
|
|
// Absolute URL; e.g. https://example.com/composer
|
|
$targetUrl = $locationHeader;
|
|
} elseif (parse_url($locationHeader, PHP_URL_HOST)) {
|
|
// Scheme relative; e.g. //example.com/foo
|
|
$targetUrl = $this->scheme.':'.$locationHeader;
|
|
} elseif ('/' === $locationHeader[0]) {
|
|
// Absolute path; e.g. /foo
|
|
$urlHost = parse_url($this->fileUrl, PHP_URL_HOST);
|
|
|
|
// Replace path using hostname as an anchor.
|
|
$targetUrl = Preg::replace('{^(.+(?://|@)'.preg_quote($urlHost).'(?::\d+)?)(?:[/\?].*)?$}', '\1'.$locationHeader, $this->fileUrl);
|
|
} else {
|
|
// Relative path; e.g. foo
|
|
// This actually differs from PHP which seems to add duplicate slashes.
|
|
$targetUrl = Preg::replace('{^(.+/)[^/?]*(?:\?.*)?$}', '\1'.$locationHeader, $this->fileUrl);
|
|
}
|
|
}
|
|
|
|
if (!empty($targetUrl)) {
|
|
$this->redirects++;
|
|
|
|
$this->io->writeError('', true, IOInterface::DEBUG);
|
|
$this->io->writeError(sprintf('Following redirect (%u) %s', $this->redirects, Url::sanitize($targetUrl)), true, IOInterface::DEBUG);
|
|
|
|
$additionalOptions['redirects'] = $this->redirects;
|
|
|
|
return $this->get(parse_url($targetUrl, PHP_URL_HOST), $targetUrl, $additionalOptions, $this->fileName, $this->progress);
|
|
}
|
|
|
|
if (!$this->retry) {
|
|
$e = new TransportException('The "'.$this->fileUrl.'" file could not be downloaded, got redirect without Location ('.$http_response_header[0].')');
|
|
$e->setHeaders($http_response_header);
|
|
$e->setResponse($this->decodeResult($result, $http_response_header));
|
|
|
|
throw $e;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @param string|false $result
|
|
* @param string[] $http_response_header
|
|
*
|
|
* @return string|null
|
|
*/
|
|
private function decodeResult($result, array $http_response_header): ?string
|
|
{
|
|
// decode gzip
|
|
if ($result && extension_loaded('zlib')) {
|
|
$contentEncoding = Response::findHeaderValue($http_response_header, 'content-encoding');
|
|
$decode = $contentEncoding && 'gzip' === strtolower($contentEncoding);
|
|
|
|
if ($decode) {
|
|
$result = zlib_decode($result);
|
|
|
|
if ($result === false) {
|
|
throw new TransportException('Failed to decode zlib stream');
|
|
}
|
|
}
|
|
}
|
|
|
|
return $this->normalizeResult($result);
|
|
}
|
|
|
|
/**
|
|
* @param string|false $result
|
|
*
|
|
* @return string|null
|
|
*/
|
|
private function normalizeResult($result): ?string
|
|
{
|
|
if ($result === false) {
|
|
return null;
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
}
|