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[stable19] Fix reading empty files from objectstorage #22753

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merged 1 commit into from
Sep 10, 2020
Merged

[stable19] Fix reading empty files from objectstorage #22753

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10 changes: 8 additions & 2 deletions apps/files_external/lib/Lib/Storage/AmazonS3.php
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Original file line number Diff line number Diff line change
Expand Up @@ -404,12 +404,12 @@ public function stat($path) {
*/
private function getContentLength($path) {
if (isset($this->filesCache[$path])) {
return $this->filesCache[$path]['ContentLength'];
return (int)$this->filesCache[$path]['ContentLength'];
}

$result = $this->headObject($path);
if (isset($result['ContentLength'])) {
return $result['ContentLength'];
return (int)$result['ContentLength'];
}

return 0;
Expand Down Expand Up @@ -506,6 +506,12 @@ public function fopen($path, $mode) {
switch ($mode) {
case 'r':
case 'rb':
// Don't try to fetch empty files
$stat = $this->stat($path);
if (is_array($stat) && isset($stat['size']) && $stat['size'] === 0) {
return fopen('php://memory', $mode);
}

try {
return $this->readObject($path);
} catch (S3Exception $e) {
Expand Down
5 changes: 5 additions & 0 deletions lib/private/Files/ObjectStore/ObjectStoreStorage.php
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Original file line number Diff line number Diff line change
Expand Up @@ -286,6 +286,11 @@ public function fopen($path, $mode) {
case 'rb':
$stat = $this->stat($path);
if (is_array($stat)) {
// Reading 0 sized files is a waste of time
if (isset($stat['size']) && $stat['size'] === 0) {
return fopen('php://memory', $mode);
}

try {
return $this->objectStore->readObject($this->getURN($stat['fileid']));
} catch (NotFoundException $e) {
Expand Down