sdk.php

<?php
class SDK implements ArrayAccess {

	const QINIU_UP_HOST	= 'http://up.qiniu.com';
	const QINIU_RS_HOST	= 'http://rs.qbox.me';
	const QINIU_RSF_HOST= 'http://rsf.qbox.me';
	//查看 
	//删除 
	//复制 x
	//移动 x
	//上传 x
	protected $access_token ;
	protected $secret_token ;
	protected $bucket;
	protected $cache = array();
	protected $aliases = array(); //文件别名, 针对文件名比较长的文件
	//curl 
	protected $ch;
	protected $headers;
	protected $options = array();
	protected $response;
	protected $info;
	protected $errno; 
	protected $error;

	public function __construct($access_token, $secret_token, $bucket = null)
	{
		$this->access_token = $access_token;
		$this->secret_token = $secret_token;
		$this->bucket = $bucket;
	}

	public function getBucket()
	{
		return $this->bucket;
	}

	public function setBucket($bucket)
	{
		$this->bucket = $bucket;
	}
	/**
	 * 查看指定文件信息。
	 * @param  string $key  	文件名或者目录+文件名
	 * @return Array|boolean 	成功返回文件内容，否会返回false.
	 */
	public function stat($key)
	{
		list($bucket, $key) = $this->parseKey($key);
		if ( is_null($bucket) ) 
		{
			die('error');
		}
		$url = self::QINIU_RS_HOST .'/stat/' . $this->encode("$bucket:$key");
		return $this->get($url);
	}

	public function delete($key)
	{
		list($bucket, $key) = $this->parseKey($key);
		if ( is_null($bucket) ) 
		{
			die('error');
		}
		$url = self::QINIU_RS_HOST .'/delete/' . $this->encode("$bucket:$key");

		return $this->get($url);
	}

	protected function parseKey($key)
	{
		$key = $this->getAlias($key);
		if ( isset($this->cache[$key]) ) 
		{
			return $this->cache[$key];
		}
		$segments = explode("|", $key);
		if ( count($segments) === 1 ) 
		{
			$this->cache[$key] = array($this->bucket, $segments[0]);
		}
		else
		{
			$temp = implode('|', array_slice($segments, 1));
			$this->cache[$key] = array($segments[0], $temp);
		}
		return $this->cache[$key];
	}

	public function getAlias($key)
	{
		return isset($this->aliases[$key]) ? $this->aliases[$key] : $key;
	}

	public function accessToken($url, $body = false)
	{
		$url = parse_url($url);
		$result = '';
		if (isset($url['path'])) {
			$result = $url['path'];
		}
		if (isset($url['query'])) {
			$result .= '?' . $url['query'];
		}
		$result .= "\n";
		if ($body) {
			$result .= $body;
		}
		$sign = hash_hmac('sha1', $result, $this->secret_token, true);
		return $this->access_token . ':' . $this->encode($sign);
	}

	public function get($url, $options = array())
	{
		$this->ch = curl_init();
		$token = $this->accessToken($url);
		$options[CURLOPT_HTTPHEADER] = array('Authorization: QBox '. $token);
		$this->options[CURLOPT_URL] = $url;
		$this->options = $options + $this->options;
		//临时处理逻辑
		
		return $this->execute();
	}

	protected function execute() 
	{
		if ( !$this->option(CURLOPT_RETURNTRANSFER) ) 
		{
			$this->option(CURLOPT_RETURNTRANSFER, true);
		}
		if ( !$this->option(CURLOPT_SSL_VERIFYPEER) ) 
		{
			$this->option(CURLOPT_SSL_VERIFYPEER, false);
		}
		if ( !$this->option(CURLOPT_SSL_VERIFYHOST) ) 
		{
			$this->option(CURLOPT_SSL_VERIFYHOST, false);
		}
		if ( !$this->option(CURLOPT_CUSTOMREQUEST) ) 
		{
			$this->option(CURLOPT_CUSTOMREQUEST, 'POST');
		}
		if ( $this->headers ) 
		{
			$this->option(CURLOPT_HTTPHEADER, $this->headers);
		}
		$this->setupCurlOptions();

		$this->response = curl_exec($this->ch);
		$this->info = curl_getinfo($this->ch);

		if ( $this->response === false ) 
		{
			$this->error = curl_error($this->ch);
			$this->errno = curl_errno($this->ch);
			curl_close($this->ch);
			return false;
		}
		else
		{
			curl_close($this->ch);
			//未处理http_code。
			if ( $this->info['content_type'] == 'application/json' ) 
			{
				$this->response = json_decode($this->response, true);
			}
			return $this->response;
		}
	}
	public function setupCurlOptions()
	{
		curl_setopt_array($this->ch, $this->options);
	}

	public function option($key, $value = NULL)
	{
		if ( is_null($value) ) 
		{
			return !isset($this->options[$key]) ? null: $this->options[$key];
		}
		else
		{
			$this->options[$key] = $value;
			return $this;
		}
	}

	public function alias($key, $value)
	{
		$this->alias[$key] = $value;
	}

	protected function encode($str)
	{
        $trans = array("+" => "-", "/" => "_");
        return strtr(base64_encode($str), $trans);
	}

	public function __get($key)
	{
		return $this->$key;
	}

	public function offsetExists($key)
	{
		//check response;
	}

	public function offsetGet($key)
	{
		return $this->stat($key);
	}

	public function offsetSet($key, $value) 
	{
		//move or copy
	}

	public function offsetUnset($key)
	{
		return $this->delete();
	}
}

//demo
$accessKey = '';
$secretKey = '';
$bucket = "phpsdk";
$sdk = new SDK($accessKey, $secretKey, $bucket);
$test = $sdk['test.jpg']; // $sdk->stat('test.jpg'); or $sdk->stat('your bucket|your file name');