imageshack.class.php

<?php
require_once('multipost.class.php');

class ImageShackUploader {
	/**
	 * API endpoints
	 */
	const IMAGESHACK_API_URL       = 'http://imageshack.us/upload_api.php';
	const IMAGESHACK_VIDEO_API_URL = 'http://render.imageshack.us/upload_api.php';

	/**
	 * Default connection and response timeout
	 */
	const IMAGESHACK_API_TIMEOUT = 10;

	protected $timeout = self::IMAGESHACK_API_TIMEOUT;

	protected $developer_key;
	protected $cookie;

	/**
	 * Constructs new uploader using specified developer key and optional cookies
	 * @param string developer_key developer key to use
	 * @param cookie optional ImageShack cookies
	 */
	function __construct($developer_key, $cookie = null, $timeout = self::IMAGESHACK_API_TIMEOUT) {
		$this->developer_key = $developer_key;
		$this->cookie        = $cookie;
		$this->timeout       = $timeout;
	}


	/**
	 * Uploads specified file
	 * @param string file file to upload
	 * @param string optsize optional resize options, WIDTHxHEIGHT or 'resample'
	 * @param boolean removeBar optional, if set to true, no information bar is available on generated thumbnail
	 * @param string tags optional, comma-separated tags
	 * @param boolean public optional, if specified then image visibility will be set to public or private
	 * @param string contentType optional, file content type, if not specified we'll try to guess it by extension
	 * @param string frameFilename optional video frame JPEG image
	 */
	function upload($file,
					$optsize = null,
					$removeBar = true,
					$tags = null,
					$public = null,
					$contentType = null,
					$frameFilename = null) {
		if (!$contentType)
			$contentType = $this->detectFileContentType($file["name"]);
		if (strpos($contentType, 'image/') === 0)
			$endpoint = self::IMAGESHACK_API_URL;
		else
			$endpoint = self::IMAGESHACK_VIDEO_API_URL;

		$params = array();
		$params[] = new filepart('fileupload', $file["tmp_name"], basename($file["tmp_name"]), $contentType, 'iso-8859-1');
		if ($frameFilename)
			$params[] = new filepart('frmupload', $frameFilename, basename($frameFilename), 'image/jpeg', 'iso-8859-1');
		if ($optsize) {
			$params[] = new stringpart('optimage', 1);
			$params[] = new stringpart('optsize', $optsize);
		}
		if ($tags)
			$params[] = new stringpart('tags', $tags);
		$params[] = new stringpart('rembar', $removeBar ? 'yes' : 'no');
		if ($public !== null)
			$params[] = new stringpart('public', $public ? 'yes' : 'no');
		if ($this->cookie)
			$params[] = new stringpart('cookie', $this->cookie);
		$params[] = new stringpart('key', $this->developer_key);

		return $this->exec($endpoint, $params);
	}

	/**
	 * Transloads URL
	 * @param url URL to transload
	 * @param string optsize optional resize options, WIDTHxHEIGHT or 'resample'
	 * @param boolean removeBar optional, if set to true, no information bar is available on generated thumbnail
	 * @param string tags optional, comma-separated tags
	 * @param boolean public optional, if specified then image visibility will be set to public or private
	 */
	function transload($url, $optsize = null, $removeBar = true, $tags = null, $public = null) {
		$contentType = $this->detectUrlContentType($url);
		if (!$contentType)
			return false;
		if (strpos($contentType, 'image/') === 0)
			$endpoint = self::IMAGESHACK_API_URL;
		else
			$endpoint = self::IMAGESHACK_VIDEO_API_URL;

		$params = array();
		$params[] = new stringpart('url', $url);
		if ($optsize) {
			$params[] = new stringpart('optimage', 1);
			$params[] = new stringpart('optsize', $optsize);
		}
		if ($tags)
			$params[] = new stringpart('tags', $tags);
		$params[] = new stringpart('rembar', $removeBar ? 'yes' : 'no');
		if ($public)
			$params[] = new stringpart('public', $public ? 'yes' : 'no');
		if ($this->cookie)
			$params[] = new stringpart('cookie', $this->cookie);
		$params[] = new stringpart('key', $this->developer_key);
		return $this->exec($endpoint, $params);
	}

	private function detectFileContentType($name) {
		$ext = strtolower(substr($name, strrpos($name, '.') + 1));
		switch ($ext) {
			case 'jpg':
			case 'jpeg':
				return 'image/jpeg';
			case 'png':
			case 'bmp':
			case 'gif':
				return 'image/' . $ext;
			case 'tif':
			case 'tiff':
				return 'image/tiff';
			case 'mp4':
				return 'video/mp4';
			case 'mov':
				return 'video/quicktime';
			case '3gp':
				return 'video/3gpp';
			case 'avi':
				return 'video/avi';
			case 'wmv':
				return 'video/x-ms-wmv';
			case 'mkv':
				return 'video/x-matroska';
		}
		return 'application/octet-stream';
	}

	private function detectUrlContentType($url) {
		$ch = @curl_init($url);

		if ($ch) {
			curl_setopt($ch, CURLOPT_HEADER, 1);
			curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
			curl_setopt($ch, CURLOPT_TIMEOUT, 10);
			curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
			curl_setopt($ch, CURLOPT_NOBODY, 1);
			curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
			curl_setopt($ch, CURLOPT_USERAGENT, 'ImageShack Image Fetcher 1.1');

			$response = curl_exec($ch);

			$is_err = curl_errno($ch);
			if ($is_err) {
				@curl_close($ch);
				return false;
			}
			$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
			if ($code != 200) {
				@curl_close($ch);
				return false;
			}
			$ret = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
			@curl_close($ch);
			return $ret;
		}
		else
			return false;
	}

	private function exec($endpoint, $request) {
		$response = multipost($endpoint,
								$request,
								$errno,
								$errormessage,
								$this->timeout);
		$xml = @simplexml_load_string($response);
		if (!$xml) {
			error_log('Failed to parse XML: ' . $response);
			return false;
		}

		if (!@$xml->error && !@$xml->files) {
			error_log('Unexpected XML');
			return false;
		}

		return $xml;
	}
}
?>