From 04d66ba7f499e138baf322cd08f973eb6e3f73c9 Mon Sep 17 00:00:00 2001
From: zotlabs <mike@macgirvin.com>
Date: Mon, 6 Nov 2017 00:17:46 -0800
Subject: attach.php minor cleanup and doc

---
 include/attach.php | 87 ++++++++++++++++--------------------------------------
 1 file changed, 26 insertions(+), 61 deletions(-)

(limited to 'include')

diff --git a/include/attach.php b/include/attach.php
index bfe3d5d46..ab9a15ec2 100644
--- a/include/attach.php
+++ b/include/attach.php
@@ -2341,6 +2341,11 @@ function attach_move($channel_id, $resource_id, $new_folder_hash) {
 }
 
 
+/**
+ * Used to generate a select input box of all your folders 
+ */
+
+
 function attach_folder_select_list($channel_id) {
 
 	$r = q("select * from attach where is_dir = 1 and uid = %d",
@@ -2391,6 +2396,10 @@ function attach_folder_rpaths($all_folders,$that_folder) {
 	return (($error) ? false : [ $current_hash , $path ]);
 }
 
+/**
+ * @brief Given a channel_id and attach_hash,  return an array with the full relative path and os_path
+ */
+
 
 function attach_syspaths($channel_id,$attach_hash) {
 
@@ -2414,6 +2423,17 @@ function attach_syspaths($channel_id,$attach_hash) {
 	return [ 'os_path' => $os_path, 'path' => $path ];
 }
 
+/**
+ * in earlier releases we did not fill in os_path and display_path in the attach DB structure.
+ * (It was not needed or used). Going forward we intend to make use of these fields. 
+ * A cron task checks for empty values (as older attachments may have arrived at our site
+ * in a clone operation) and executes attach_syspaths() to generate these field values and correct 
+ * the attach table entry. The operation is limited to 100 DB entries at a time so as not to 
+ * overload the system in any cron run. Eventually it will catch up with old attach structures
+ * and switch into maintenance mode to correct any that might arrive in clone packets from older
+ * sites.
+ */
+
 
 
 function attach_upgrade() {
@@ -2440,6 +2460,12 @@ function attach_upgrade() {
 }
 
 
+/**
+ * Chunked uploader for integration with the blueimp jquery-uploader
+ * This is currently used.
+ */
+
+
 function save_chunk($channel,$start,$end,$len) {
 
 	$result = [];
@@ -2478,64 +2504,3 @@ function save_chunk($channel,$start,$end,$len) {
 }
 
 
-/**
- * @brief Submit handler for chunked uploads.
- *
- * @param array $channel
- * @param array $arr
- * @return array
- */
-function chunkloader($channel, $arr) {
-
-	logger('request: ' . print_r($arr,true), LOGGER_DEBUG);
-	logger('files: ' . print_r($_FILES,true), LOGGER_DEBUG);
-
-	$result = [];
-
-	$tmp_path = $_FILES['file']['tmp_name'];
-	$new_base = 'store/[data]/' . $channel['channel_address'] . '/tmp';
-	os_mkdir($new_base,STORAGE_DEFAULT_PERMISSIONS,true);
-
-	$new_path = $new_base . '/' . $arr['resumableFilename'];
-
-	rename($tmp_path,$new_path . '.' . intval($arr['resumableChunkNumber']));
-
-	$missing_parts = false;
-	for($x = 1; $x <= intval($arr['resumableTotalChunks']); $x ++) {
-		if(! file_exists($new_path . '.' . $x)) {
-			$missing_parts = true;
-			break;
-		}
-	}
-
-	if($missing_parts) {
-		$result['partial'] = true;
-		return $result;
-	}
-
-	if(intval($arr['resumableTotalChunks']) === 1) {
-		rename($new_path . '.' . '1', $new_path);
-	}
-	else {
-		for($x = 1; $x <= intval($arr['resumableTotalChunks']); $x ++) {
-			$istream = fopen($new_path . '.' . $x,'rb');
-			$ostream = fopen($new_path,'ab');
-			if($istream && $ostream) {
-				pipe_streams($istream,$ostream);
-				fclose($istream);
-				fclose($ostream);
-			}
-			unlink($new_path . '.' . $x);
-		}
-	}
-
-	$result['name'] = $arr['resumableFilename'];
-	$result['type'] = $arr['resumableType'];
-	$result['tmp_name'] = $new_path;
-	$result['error'] = 0;
-	$result['size'] = $arr['resumableTotalSize'];
-	$result['complete'] = true;
-
-	return $result;
-}
-
-- 
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