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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Service
* @subpackage SlideShare
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: SlideShare.php 16211 2009-06-21 19:23:55Z thomas $
*/
/**
* Zend_Http_Client
*/
require_once 'Zend/Http/Client.php';
/**
* Zend_Cache
*/
require_once 'Zend/Cache.php';
/**
* Zend_Service_SlideShare_SlideShow
*/
require_once 'Zend/Service/SlideShare/SlideShow.php';
/**
* The Zend_Service_SlideShare component is used to interface with the
* slideshare.net web server to retrieve slide shows hosted on the web site for
* display or other processing.
*
* @category Zend
* @package Zend_Service
* @subpackage SlideShare
* @throws Zend_Service_SlideShare_Exception
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Service_SlideShare
{
/**
* Web service result code mapping
*/
const SERVICE_ERROR_BAD_APIKEY = 1;
const SERVICE_ERROR_BAD_AUTH = 2;
const SERVICE_ERROR_MISSING_TITLE = 3;
const SERVICE_ERROR_MISSING_FILE = 4;
const SERVICE_ERROR_EMPTY_TITLE = 5;
const SERVICE_ERROR_NOT_SOURCEOBJ = 6;
const SERVICE_ERROR_INVALID_EXT = 7;
const SERVICE_ERROR_FILE_TOO_BIG = 8;
const SERVICE_ERROR_SHOW_NOT_FOUND = 9;
const SERVICE_ERROR_USER_NOT_FOUND = 10;
const SERVICE_ERROR_GROUP_NOT_FOUND = 11;
const SERVICE_ERROR_MISSING_TAG = 12;
const SERVICE_ERROR_DAILY_LIMIT = 99;
const SERVICE_ERROR_ACCOUNT_BLOCKED = 100;
/**
* Slide share Web service communication URIs
*/
const SERVICE_UPLOAD_URI = 'http://www.slideshare.net/api/1/upload_slideshow';
const SERVICE_GET_SHOW_URI = 'http://www.slideshare.net/api/1/get_slideshow';
const SERVICE_GET_SHOW_BY_USER_URI = 'http://www.slideshare.net/api/1/get_slideshow_by_user';
const SERVICE_GET_SHOW_BY_TAG_URI = 'http://www.slideshare.net/api/1/get_slideshow_by_tag';
const SERVICE_GET_SHOW_BY_GROUP_URI = 'http://www.slideshare.net/api/1/get_slideshows_from_group';
/**
* The MIME type of Slideshow files
*
*/
const POWERPOINT_MIME_TYPE = "application/vnd.ms-powerpoint";
/**
* The API key to use in requests
*
* @var string The API key
*/
protected $_apiKey;
/**
* The shared secret to use in requests
*
* @var string the Shared secret
*/
protected $_sharedSecret;
/**
* The username to use in requests
*
* @var string the username
*/
protected $_username;
/**
* The password to use in requests
*
* @var string the password
*/
protected $_password;
/**
* The HTTP Client object to use to perform requests
*
* @var Zend_Http_Client
*/
protected $_httpclient;
/**
* The Cache object to use to perform caching
*
* @var Zend_Cache_Core
*/
protected $_cacheobject;
/**
* Sets the Zend_Http_Client object to use in requests. If not provided a default will
* be used.
*
* @param Zend_Http_Client $client The HTTP client instance to use
* @return Zend_Service_SlideShare
*/
public function setHttpClient(Zend_Http_Client $client)
{
$this->_httpclient = $client;
return $this;
}
/**
* Returns the instance of the Zend_Http_Client which will be used. Creates an instance
* of Zend_Http_Client if no previous client was set.
*
* @return Zend_Http_Client The HTTP client which will be used
*/
public function getHttpClient()
{
if(!($this->_httpclient instanceof Zend_Http_Client)) {
$client = new Zend_Http_Client();
$client->setConfig(array('maxredirects' => 2,
'timeout' => 5));
$this->setHttpClient($client);
}
$this->_httpclient->resetParameters();
return $this->_httpclient;
}
/**
* Sets the Zend_Cache object to use to cache the results of API queries
*
* @param Zend_Cache_Core $cacheobject The Zend_Cache object used
* @return Zend_Service_SlideShare
*/
public function setCacheObject(Zend_Cache_Core $cacheobject)
{
$this->_cacheobject = $cacheobject;
return $this;
}
/**
* Gets the Zend_Cache object which will be used to cache API queries. If no cache object
* was previously set the the default will be used (Filesystem caching in /tmp with a life
* time of 43200 seconds)
*
* @return Zend_Cache_Core The object used in caching
*/
public function getCacheObject()
{
if(!($this->_cacheobject instanceof Zend_Cache_Core)) {
$cache = Zend_Cache::factory('Core', 'File', array('lifetime' => 43200,
'automatic_serialization' => true),
array('cache_dir' => '/tmp'));
$this->setCacheObject($cache);
}
return $this->_cacheobject;
}
/**
* Returns the user name used for API calls
*
* @return string The username
*/
public function getUserName()
{
return $this->_username;
}
/**
* Sets the user name to use for API calls
*
* @param string $un The username to use
* @return Zend_Service_SlideShare
*/
public function setUserName($un)
{
$this->_username = $un;
return $this;
}
/**
* Gets the password to use in API calls
*
* @return string the password to use in API calls
*/
public function getPassword()
{
return $this->_password;
}
/**
* Sets the password to use in API calls
*
* @param string $pw The password to use
* @return Zend_Service_SlideShare
*/
public function setPassword($pw)
{
$this->_password = (string)$pw;
return $this;
}
/**
* Gets the API key to be used in making API calls
*
* @return string the API Key
*/
public function getApiKey()
{
return $this->_apiKey;
}
/**
* Sets the API key to be used in making API calls
*
* @param string $key The API key to use
* @return Zend_Service_SlideShare
*/
public function setApiKey($key)
{
$this->_apiKey = (string)$key;
return $this;
}
/**
* Gets the shared secret used in making API calls
*
* @return string the Shared secret
*/
public function getSharedSecret()
{
return $this->_sharedSecret;
}
/**
* Sets the shared secret used in making API calls
*
* @param string $secret the shared secret
* @return Zend_Service_SlideShare
*/
public function setSharedSecret($secret)
{
$this->_sharedSecret = (string)$secret;
return $this;
}
/**
* The Constructor
*
* @param string $apikey The API key
* @param string $sharedSecret The shared secret
* @param string $username The username
* @param string $password The password
*/
public function __construct($apikey, $sharedSecret, $username = null, $password = null)
{
$this->setApiKey($apikey)
->setSharedSecret($sharedSecret)
->setUserName($username)
->setPassword($password);
$this->_httpclient = new Zend_Http_Client();
}
/**
* Uploads the specified Slide show the the server
*
* @param Zend_Service_SlideShare_SlideShow $ss The slide show object representing the slide show to upload
* @param boolean $make_src_public Determines if the the slide show's source file is public or not upon upload
* @return Zend_Service_SlideShare_SlideShow The passed Slide show object, with the new assigned ID provided
*/
public function uploadSlideShow(Zend_Service_SlideShare_SlideShow $ss, $make_src_public = true)
{
$timestamp = time();
$params = array('api_key' => $this->getApiKey(),
'ts' => $timestamp,
'hash' => sha1($this->getSharedSecret().$timestamp),
'username' => $this->getUserName(),
'password' => $this->getPassword(),
'slideshow_title' => $ss->getTitle());
$description = $ss->getDescription();
$tags = $ss->getTags();
$filename = $ss->getFilename();
if(!file_exists($filename) || !is_readable($filename)) {
require_once 'Zend/Service/SlideShare/Exception.php';
throw new Zend_Service_SlideShare_Exception("Specified Slideshow for upload not found or unreadable");
}
if(!empty($description)) {
$params['slideshow_description'] = $description;
} else {
$params['slideshow_description'] = "";
}
if(!empty($tags)) {
$tmp = array();
foreach($tags as $tag) {
$tmp[] = "\"$tag\"";
}
$params['slideshow_tags'] = implode(' ', $tmp);
} else {
$params['slideshow_tags'] = "";
}
$client = $this->getHttpClient();
$client->setUri(self::SERVICE_UPLOAD_URI);
$client->setParameterPost($params);
$client->setFileUpload($filename, "slideshow_srcfile");
require_once 'Zend/Http/Client/Exception.php';
try {
$response = $client->request('POST');
} catch(Zend_Http_Client_Exception $e) {
require_once 'Zend/Service/SlideShare/Exception.php';
throw new Zend_Service_SlideShare_Exception("Service Request Failed: {$e->getMessage()}");
}
$sxe = simplexml_load_string($response->getBody());
if($sxe->getName() == "SlideShareServiceError") {
$message = (string)$sxe->Message[0];
list($code, $error_str) = explode(':', $message);
require_once 'Zend/Service/SlideShare/Exception.php';
throw new Zend_Service_SlideShare_Exception(trim($error_str), $code);
}
if(!$sxe->getName() == "SlideShowUploaded") {
require_once 'Zend/Service/SlideShare/Exception.php';
throw new Zend_Service_SlideShare_Exception("Unknown XML Respons Received");
}
$ss->setId((int)(string)$sxe->SlideShowID);
return $ss;
}
/**
* Retrieves a slide show's information based on slide show ID
*
* @param int $ss_id The slide show ID
* @return Zend_Service_SlideShare_SlideShow the Slideshow object
*/
public function getSlideShow($ss_id)
{
$timestamp = time();
$params = array('api_key' => $this->getApiKey(),
'ts' => $timestamp,
'hash' => sha1($this->getSharedSecret().$timestamp),
'slideshow_id' => $ss_id);
$cache = $this->getCacheObject();
$cache_key = md5("__zendslideshare_cache_$ss_id");
if(!$retval = $cache->load($cache_key)) {
$client = $this->getHttpClient();
$client->setUri(self::SERVICE_GET_SHOW_URI);
$client->setParameterPost($params);
require_once 'Zend/Http/Client/Exception.php';
try {
$response = $client->request('POST');
} catch(Zend_Http_Client_Exception $e) {
require_once 'Zend/Service/SlideShare/Exception.php';
throw new Zend_Service_SlideShare_Exception("Service Request Failed: {$e->getMessage()}");
}
$sxe = simplexml_load_string($response->getBody());
if($sxe->getName() == "SlideShareServiceError") {
$message = (string)$sxe->Message[0];
list($code, $error_str) = explode(':', $message);
require_once 'Zend/Service/SlideShare/Exception.php';
throw new Zend_Service_SlideShare_Exception(trim($error_str), $code);
}
if(!$sxe->getName() == 'Slideshows') {
require_once 'Zend/Service/SlideShare/Exception.php';
throw new Zend_Service_SlideShare_Exception('Unknown XML Repsonse Received');
}
$retval = $this->_slideShowNodeToObject(clone $sxe->Slideshow[0]);
$cache->save($retval, $cache_key);
}
return $retval;
}
/**
* Retrieves an array of slide shows for a given username
*
* @param string $username The username to retrieve slide shows from
* @param int $offset The offset of the list to start retrieving from
* @param int $limit The maximum number of slide shows to retrieve
* @return array An array of Zend_Service_SlideShare_SlideShow objects
*/
public function getSlideShowsByUsername($username, $offset = null, $limit = null)
{
return $this->_getSlideShowsByType('username_for', $username, $offset, $limit);
}
/**
* Retrieves an array of slide shows based on tag
*
* @param string $tag The tag to retrieve slide shows with
* @param int $offset The offset of the list to start retrieving from
* @param int $limit The maximum number of slide shows to retrieve
* @return array An array of Zend_Service_SlideShare_SlideShow objects
*/
public function getSlideShowsByTag($tag, $offset = null, $limit = null)
{
if(is_array($tag)) {
$tmp = array();
foreach($tag as $t) {
$tmp[] = "\"$t\"";
}
$tag = implode(" ", $tmp);
}
return $this->_getSlideShowsByType('tag', $tag, $offset, $limit);
}
/**
* Retrieves an array of slide shows based on group name
*
* @param string $group The group name to retrieve slide shows for
* @param int $offset The offset of the list to start retrieving from
* @param int $limit The maximum number of slide shows to retrieve
* @return array An array of Zend_Service_SlideShare_SlideShow objects
*/
public function getSlideShowsByGroup($group, $offset = null, $limit = null)
{
return $this->_getSlideShowsByType('group_name', $group, $offset, $limit);
}
/**
* Retrieves Zend_Service_SlideShare_SlideShow object arrays based on the type of
* list desired
*
* @param string $key The type of slide show object to retrieve
* @param string $value The specific search query for the slide show type to look up
* @param int $offset The offset of the list to start retrieving from
* @param int $limit The maximum number of slide shows to retrieve
* @return array An array of Zend_Service_SlideShare_SlideShow objects
*/
protected function _getSlideShowsByType($key, $value, $offset = null, $limit = null)
{
$key = strtolower($key);
switch($key) {
case 'username_for':
$responseTag = 'User';
$queryUri = self::SERVICE_GET_SHOW_BY_USER_URI;
break;
case 'group_name':
$responseTag = 'Group';
$queryUri = self::SERVICE_GET_SHOW_BY_GROUP_URI;
break;
case 'tag':
$responseTag = 'Tag';
$queryUri = self::SERVICE_GET_SHOW_BY_TAG_URI;
break;
default:
require_once 'Zend/Service/SlideShare/Exception.php';
throw new Zend_Service_SlideShare_Exception("Invalid SlideShare Query");
}
$timestamp = time();
$params = array('api_key' => $this->getApiKey(),
'ts' => $timestamp,
'hash' => sha1($this->getSharedSecret().$timestamp),
$key => $value);
if($offset !== null) {
$params['offset'] = (int)$offset;
}
if($limit !== null) {
$params['limit'] = (int)$limit;
}
$cache = $this->getCacheObject();
$cache_key = md5($key.$value.$offset.$limit);
if(!$retval = $cache->load($cache_key)) {
$client = $this->getHttpClient();
$client->setUri($queryUri);
$client->setParameterPost($params);
require_once 'Zend/Http/Client/Exception.php';
try {
$response = $client->request('POST');
} catch(Zend_Http_Client_Exception $e) {
require_once 'Zend/Service/SlideShare/Exception.php';
throw new Zend_Service_SlideShare_Exception("Service Request Failed: {$e->getMessage()}");
}
$sxe = simplexml_load_string($response->getBody());
if($sxe->getName() == "SlideShareServiceError") {
$message = (string)$sxe->Message[0];
list($code, $error_str) = explode(':', $message);
require_once 'Zend/Service/SlideShare/Exception.php';
throw new Zend_Service_SlideShare_Exception(trim($error_str), $code);
}
if(!$sxe->getName() == $responseTag) {
require_once 'Zend/Service/SlideShare/Exception.php';
throw new Zend_Service_SlideShare_Exception('Unknown or Invalid XML Repsonse Received');
}
$retval = array();
foreach($sxe->children() as $node) {
if($node->getName() == 'Slideshow') {
$retval[] = $this->_slideShowNodeToObject($node);
}
}
$cache->save($retval, $cache_key);
}
return $retval;
}
/**
* Converts a SimpleXMLElement object representing a response from the service
* into a Zend_Service_SlideShare_SlideShow object
*
* @param SimpleXMLElement $node The input XML from the slideshare.net service
* @return Zend_Service_SlideShare_SlideShow The resulting object
*/
protected function _slideShowNodeToObject(SimpleXMLElement $node)
{
if($node->getName() == 'Slideshow') {
$ss = new Zend_Service_SlideShare_SlideShow();
$ss->setId((string)$node->ID);
$ss->setDescription((string)$node->Description);
$ss->setEmbedCode((string)$node->EmbedCode);
$ss->setNumViews((string)$node->Views);
$ss->setPermaLink((string)$node->Permalink);
$ss->setStatus((string)$node->Status);
$ss->setStatusDescription((string)$node->StatusDescription);
foreach(explode(",", (string)$node->Tags) as $tag) {
if(!in_array($tag, $ss->getTags())) {
$ss->addTag($tag);
}
}
$ss->setThumbnailUrl((string)$node->Thumbnail);
$ss->setTitle((string)$node->Title);
$ss->setLocation((string)$node->Location);
$ss->setTranscript((string)$node->Transcript);
return $ss;
}
require_once 'Zend/Service/SlideShare/Exception.php';
throw new Zend_Service_SlideShare_Exception("Was not provided the expected XML Node for processing");
}
}
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