Version 4.1.19

system/Http/Ranges.php

@@ -2,9 +2,9 @@
 /**
  * @brief		HTTP Ranges Request/Response Class
  * @author		<a href='http://www.invisionpower.com'>Invision Power Services, Inc.</a>
- * @copyright	(c) 2001 - SVN_YYYY Invision Power Services, Inc.
+ * @copyright	(c) 2001 - 2016 Invision Power Services, Inc.
  * @license		http://www.invisionpower.com/legal/standards/
- * @package		IPS Social Suite
+ * @package		IPS Community Suite
  * @since		19 May 2014
  * @version		SVN_VERSION_NUMBER
  * @note		This class facilitates parsing of HTTP Range requests and sending the appropriate response
@@ -53,9 +53,13 @@ class _Ranges extends Response
 		$range			= 0;
 		$start_range	= 0;
 
+		\IPS\Log::debug( "Range response initiated", 'ranges' );
+
 		/* Was this a ranged request? */
 		if( isset( $_SERVER['HTTP_RANGE'] ) ) 
 		{
+			\IPS\Log::debug( "This is a range request: " . $_SERVER['HTTP_RANGE'], 'ranges' );
+
 			/* Get the range */
 			list( $a, $range )	= explode( "=", $_SERVER['HTTP_RANGE'] );
 
@@ -65,6 +69,8 @@ class _Ranges extends Response
 			/* Did we only find one range? */
 			if( count($ranges) == 1 )
 			{
+				\IPS\Log::debug( "Only one range detected", 'ranges' );
+
 				/* Get the actual range start and end */
 				list( $start_range, $end_range )	= explode( "-", $range );
 	
@@ -90,6 +96,8 @@ class _Ranges extends Response
 				/* If the range is invalid we need to send a 416 header and let the client know the valid range */
 				if( $start_range > $size OR $end_range > $size )
 				{
+					\IPS\Log::debug( "Invalid range, responding with 416 header.  Requested {$start_range} - {$end_range} out of {$size}", 'ranges' );
+
 					\IPS\Output::i()->sendStatusCodeHeader( 416 );
 					\IPS\Output::i()->sendHeader( "Content-Range: */{$filesize}" );
 					return;
@@ -97,6 +105,8 @@ class _Ranges extends Response
 				/* Otherwise send the 206 header */
 				else
 				{
+					\IPS\Log::debug( "Sending requested range with 206 header: {$start_range} - {$size} out of {$filesize}", 'ranges' );
+
 					\IPS\Output::i()->sendStatusCodeHeader( 206 );
 					\IPS\Output::i()->sendHeader( "Content-Range: bytes {$start_range}-{$size}/{$filesize}" );
 				}
@@ -115,6 +125,8 @@ class _Ranges extends Response
 				
 				foreach( $ranges as $arange )
 				{
+					\IPS\Log::debug( "Multiple ranges: {$start_range} - {$end_range}", 'ranges' );
+
 				    /* Get the actual range start and end */
 					list( $start_range, $end_range ) 	= explode( "-", $arange );
 					
@@ -140,6 +152,8 @@ class _Ranges extends Response
 					/* If the range is invalid we need to send a 416 header and let the client know the valid range */
 					if( $start_range > $size OR $end_range > $size )
 					{
+						\IPS\Log::debug( "This range out of multiple ranges was invalid", 'ranges' );
+
 						\IPS\Output::i()->sendStatusCodeHeader( 416 );
 						\IPS\Output::i()->sendHeader( "Content-Range: */{$filesize}" );
 						return;
@@ -160,6 +174,8 @@ class _Ranges extends Response
 
 					$the_responses	= array();
 
+					\IPS\Log::debug( "One range out of multiple ranges to respond: {$start_range} - {$size} out of {$filesize}", 'ranges' );
+
 					\IPS\Output::i()->sendStatusCodeHeader( 206 );
 					\IPS\Output::i()->sendHeader( "Content-Range: bytes {$start_range}-{$size}/{$filesize}" );
 
@@ -174,6 +190,8 @@ class _Ranges extends Response
 				{
 					$content_length	= 0;
 					
+					\IPS\Log::debug( "Multiple range responses, using boundary", 'ranges' );
+
 					foreach( $the_responses as $part )
 					{
 						$content_length	+= \strlen( "\r\n--IPDOWNLOADSBOUNDARYMARKER\r\n" );
@@ -197,6 +215,8 @@ class _Ranges extends Response
 		/* No range */
 		else
 		{
+			\IPS\Log::debug( "No range requested, sending entire file", 'ranges' );
+
 			$size = $filesize - 1;
 
 			\IPS\Output::i()->sendStatusCodeHeader( 200 );