/**
* @method OC_Shorty_Tools::ob_control
* @param bool on: Wether to activate or deactivate the buffer
* @return NULL|string: NULL when starting buffering, buffered content when stopping buffering
* @access public
* @author Christian Reiner
*/
static function ob_control ( $on=TRUE )
{
$output = NULL; @ob_implicit_flush ( FALSE );
@ob_start ( );
self::$ob_active = TRUE;
if ( self::$ob_usage )
{
// attempt to use outpout buffering
if ( $on )
{
// start buffering if possible and not yet started before
if ( function_exists('ob_start') // output buffers installed at all ?
&& ! self::$ob_active ) // don't stack buffers (create buffer only, if not yet started)
{
@ob_implicit_flush ( FALSE );
@ob_start ( );
self::$ob_active = TRUE;
}
} // if $on==TRUE
else
{
// end buffering _if_ it has been started before
if ( self::$ob_active )
{
$output = @ob_get_contents ( );
@ob_end_clean ( );
self::$ob_active = FALSE;
}
} // if $on==FALSE
} // if ob_usage
return $output;
} // function ob_control
/**
* @method OC_Shorty_Backend::registerUrl
* @brief Wrapper function around the specific backend routines
* @param string id: Internal shorty id used to reference a shorty upon usage.
* @return string: The shortened url as generated by a specific backend.
* @throws OC_Shorty_Exception taking over the explaining of the failure from the specific backend
* @access public
* @author Christian Reiner
*/
static function registerUrl ( $id )
{
try
{
// construct the $relay, the url to be called to reach THIS service (ownclouds shorty plugin)
$relay = OC_Shorty_Tools::relayUrl ( $id );
// call backend specific work horse
switch ( $type=OCP\Config::getUserValue(OCP\User::getUser(),'shorty','backend-type',
OCP\Config::getAppValue('shorty','backend-default','none')) )
{
default:
return OC_Shorty_Backend::registerUrl_default ( $id, $relay );
case 'static':
return OC_Shorty_Backend::registerUrl_static ( $id, $relay );
case 'bitly':
return OC_Shorty_Backend::registerUrl_bitly ( $id, $relay );
case 'cligs':
return OC_Shorty_Backend::registerUrl_cligs ( $id, $relay );
case 'google':
return OC_Shorty_Backend::registerUrl_google ( $id, $relay );
case 'isgd':
return OC_Shorty_Backend::registerUrl_isgd ( $id, $relay );
case 'tinyurl':
return OC_Shorty_Backend::registerUrl_tinyurl ( $id, $relay );
case 'tinycc':
return OC_Shorty_Backend::registerUrl_tinycc ( $id, $relay );
} // switch
} // try
catch (OC_Shorty_Exception $e)
{
throw $e;
} // catch
catch (Exception $e)
{
throw new OC_Shorty_Exception ( "Failed to register url '%s' at '%s' backend.", array($relay,$type) );
} // catch
} // OC_Shorty_Backend::registerUrl
$param = array (
':user' => OCP\User::getUser ( ),
':sort' => $p_sort,
// ':offset' => $p_offset,
// ':limit' => PAGE_SIZE,
);
$query = OCP\DB::prepare ( OC_Shorty_Query::URL_LIST );
$result = $query->execute($param);
$reply = $result->fetchAll();
foreach (array_keys($reply) as $key) {
if (isset($reply[$key]['id']))
{
// enhance all entries with the relay url
$reply[$key]['relay']=OC_Shorty_Tools::relayUrl ( $reply[$key]['id'] );
// make sure there is _any_ favicon contained, otherwise layout in MS-IE browser is broken...
if (empty($reply[$key]['favicon']))
$reply[$key]['favicon'] = OCP\Util::imagePath('shorty', 'blank.png');
}
} // foreach
// swallow any accidential output generated by php notices and stuff to preserve a clean JSON reply structure
OC_Shorty_Tools::ob_control ( FALSE );
OCP\Util::writeLog( 'shorty', sprintf("Constructed list of defined shortys holding %s entries.",sizeof($reply)), OCP\Util::DEBUG );
OCP\JSON::success ( array (
'data' => $reply,
'level' => 'debug',
'count' => sizeof($reply),
'message' => OC_Shorty_L10n::t("Number of entries: %s", count($reply)) ) );
} catch ( Exception $e ) { OC_Shorty_Exception::JSONerror($e); }
?>
/**
* @method OC_Shorty_Type::normalize
* @brief Cleanup and formal normalization of a given value according to its type
* Normalizes a given value according to its claimed type.
* This typically means trimming of string values, but somet imes also more specific actions.
* @param mixed value: Value to be normalized
* @param OC_Shorty_Type::type type: Supposed type of the va lue
* @param bool strict: Flag indicating if the normalization should be done in a strict way
* @return mixed: The normalized value
* @throws error Indicating a parameter violation
* @access public
* @author Christian Reiner
*/
static function normalize ( $value, $type, $strict=FALSE )
{
if (NULL===(self::validate($value,$type,$strict)))
{
if ( ! $strict)
return NULL;
else
throw new OC_Shorty_Exception ( "invalid value '%1\$s' for type '%2\$s'", array($value,$type) );
} // if
switch ( $type )
{
case self::ID:
return trim ( $value );
case self::STATUS:
return trim ( $value );
case self::SORTKEY:
return trim ( $value );
case self::SORTVAL:
return trim ( $value );
case self::JSON:
return trim ( $value );
case self::STRING:
return trim ( $value );
case self::URL:
return trim ( $value );
case self::PATH:
return trim ( $value );
case self::INTEGER:
return sprintf ( '%d', $value );
case self::FLOAT:
return sprintf ( '%f', $value );
case self::TIMESTAMP:
return trim ( $value );
case self::DATE:
return date ( 'Y-m-d', self::validate($value,OC_Shorty_Type::DATE) );
case self::BOOLEAN:
return OC_Shorty_Tools::toBoolean(trim($value)) ? TRUE : FALSE;
} // switch $type
throw new OC_Shorty_Exception ( "unknown request argument type '%s'", array($type) );
} // function normalize
static function enrichMetaDataCurl ( $url, &$meta )
{
// to fetch meta data we rely on curl being installed
if ( ! function_exists('curl_init') )
return;
// try to retrieve the meta data
$handle = curl_init ( );
curl_setopt ( $handle, CURLOPT_URL, OC_Shorty_Tools::idnToASCII($url) );
curl_setopt ( $handle, CURLOPT_RETURNTRANSFER, 1 );
curl_setopt ( $handle, CURLOPT_FOLLOWLOCATION, TRUE );
curl_setopt ( $handle, CURLOPT_MAXREDIRS, 10 );
if ( FALSE!==($page=curl_exec($handle)) )
{
// try to extract title from page
preg_match ( "/<head[^>]*>.*<title>(.*)<\/title>.*<\/head>/si", $page, $match );
// $meta['title'] = isset($match[1]) ? htmlspecialchars_decode ( trim($match[1]) ) : '';
$meta['title'] = isset($match[1]) ? html_entity_decode ( trim($match[1]), ENT_COMPAT, 'UTF-8' ) : '';
$meta['staticon'] = self::selectIcon ( 'state', TRUE );
// final url after a possible redirection
$meta['final'] = curl_getinfo ( $handle, CURLINFO_EFFECTIVE_URL );
// try to extract favicon from page
preg_match ( '/<[^>]*link[^>]*(rel=["\']icon["\']|rel=["\']shortcut icon["\']) .*href=["\']([^>]*)["\'].*>/iU', $page, $match );
if (1<sizeof($match))
{
// the specified uri might be an url, an absolute or a relative path
// we have to turn it into an url to be able to display it out of context
$favicon = htmlspecialchars_decode ( $match[2] );
// test for an url
if (parse_url($favicon,PHP_URL_SCHEME))
{
$meta['favicon'] = $favicon;
}
// test for an absolute path
elseif ( 0===strpos(parse_url($favicon,PHP_URL_PATH),'/') )
{
$url_token = parse_url($meta['final']);
$meta['favicon'] = sprintf( '%s://%s/%s', $url_token['scheme'], $url_token['host'], $favicon );
}
// so it appears to be a relative path
else
{
$url_token = parse_url($meta['final']);
$meta['favicon'] = sprintf( '%s://%s%s%s', $url_token['scheme'], $url_token['host'], dirname($url_token['path']), $favicon );
}
}
$meta['mimetype'] = preg_replace ( '/^([^;]+);.*/i', '$1', curl_getinfo($handle,CURLINFO_CONTENT_TYPE) );
$meta['mimicon'] = self::selectIcon ( 'mimetype', $meta['mimetype'] );
$meta['code'] = curl_getinfo ( $handle, CURLINFO_HTTP_CODE );
$meta['status'] = OC_Shorty_L10n::t ( self::selectCode('status',$meta['code']) );
$meta['explanation'] = OC_Shorty_L10n::t ( self::selectCode('explanation',$meta['code']) );
} // if
curl_close ( $handle );
// that's it !
} // function enrichMetaDataCurl
/**
* @method OC_Shorty_Exception::JSONerror
* @brief Calls OCP\JSON::error with a pretty formated version of an exception
* @param exception: An exception object holding information
* @return json: OCP\JSON::error
* @access public
* @author Christian Reiner
*/
static function JSONerror ( $e )
{
$title = OC_Shorty_L10n::t("Exception");
switch ( get_class($e) )
{
case 'OC_Shorty_Exception':
$message = $e->getTranslation();
break;
case 'PDOException':
$message = sprintf ( OC_Shorty_L10n::t( "%s\nMessage(code): %s (%s)\nFile(line): %s (%s)\nInfo: %%s",
OC_Shorty_L10n::t("Exception (%s)", get_class($e)),
htmlspecialchars($e->getMessage()),
htmlspecialchars($e->getCode()),
htmlspecialchars($e->getFile()),
htmlspecialchars($e->getLine()) ),
(method_exists($e,'errorInfo') ? trim($e->errorInfo()) : '-/-') );
break;
default:
if ( is_a($e,'Exception') )
$message = OC_Shorty_L10n::t("Unexpected type of exception caught:%s\n%s", get_class($e), $e->getMessage());
else $message = OC_Shorty_L10n::t("Unexpected thrown object of type caught:\n%s", get_class($e));
} // switch
// swallow any accidential output generated by php notices and stuff to preserve a clean JSON reply structure
$output = trim ( OC_Shorty_Tools::ob_control(FALSE) );
if ( $output )
{
$message = "! Swallowing accidential output from ajax routines ! \n"
."Please fix this ! Here is the first line: \n"
.substr ( $output, 0, strpos($output,"\n") );
OCP\Util::writeLog( 'shorty', $message, OCP\Util::WARN );
} // output
// return a clean JSON error
return OCP\JSON::error ( array ('title' => $title,
'level' => 'error',
'message' => sprintf("%s:\n%s", $title, $message) ) );
} // function error
/**
* @method import
* @brief Imports all data from a given resource into this apps storage areas
* @author Christian Reiner
*/
function import ( )
{
OCP\Util::writeLog ( 'shorty','Starting data migration import for Shorty', OCP\Util::INFO );
switch( $this->appinfo->version )
{
default:
$query = $this->content->prepare( "SELECT * FROM shorty WHERE user LIKE ?" );
$result = $query->execute( array( $this->olduid ) );
if (is_array(is_array($result)))
{
while( $row = $result->fetchRow() )
{
$param = array (
'id' => $row['id'],
'status' => $row['status'],
'title' => $row['title'],
'favicon' => $row['favicon'],
'source' => $row['source'],
'target' => $row['target'],
'user' => $row['user'],
'until' => $row['until'],
'created' => $row['created'],
'accessed' => $row['accessed'],
'clicks' => $row['clicks'],
'notes' => $row['notes'],
);
// import each shorty one by one, no special treatment required, since no autoincrement id is used
$query = OCP\DB::prepare( sprintf ( "INSERT INTO *PREFIX*shorty(%s) VALUES (%s)",
implode(',',array_keys($param)),
implode(',',array_fill(0,count($param),'?')) ) );
$query->execute( $param );
} // while
} // if
break;
} // switch
// check for success by counting the generated entries
$count = OC_Shorty_Tools::countShortys();
if( (is_array($result) && is_array($count))
&& (count($result)==$count['sum_shortys']) )
return true;
else return false;
} // function import
