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properly lock the target file on dav upload when not using part files 

Signed-off-by: Robin Appelman <robin@icewind.nl>
This commit is contained in:
Robin Appelman 2018-05-14 16:22:30 +02:00
parent c923ee7419
commit f017f431f6
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GPG Key ID: 42B69D8A64526EFB
1 changed files with 25 additions and 17 deletions
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42
apps/dav/lib/Connector/Sabre/File.php
View File

@ -150,12 +150,21 @@ class File extends Node implements IFile {
$this->emitPreHooks($exists);
}
$view = \OC\Files\Filesystem::getView();
// the part file and target file might be on a different storage in case of a single file storage (e.g. single file share)
/** @var \OC\Files\Storage\Storage $partStorage */
list($partStorage, $internalPartPath) = $this->fileView->resolvePath($partFilePath);
/** @var \OC\Files\Storage\Storage $storage */
list($storage, $internalPath) = $this->fileView->resolvePath($this->path);
try {
if (!$needsPartFile) {
if ($view && !$this->emitPreHooks($exists)) {
throw new Exception('Could not write to final file, canceled by hook');
}
$this->changeLock(ILockingProvider::LOCK_EXCLUSIVE);
}
$target = $partStorage->fopen($internalPartPath, 'wb');
if ($target === false) {
\OC::$server->getLogger()->error('\OC\Files\Filesystem::fopen() failed', ['app' => 'webdav']);
@ -191,26 +200,25 @@ class File extends Node implements IFile {
}
try {
$view = \OC\Files\Filesystem::getView();
$run = ($view && $needsPartFile) ? $this->emitPreHooks($exists) : true;
try {
$this->changeLock(ILockingProvider::LOCK_EXCLUSIVE);
} catch (LockedException $e) {
if ($needsPartFile) {
$partStorage->unlink($internalPartPath);
}
throw new FileLocked($e->getMessage(), $e->getCode(), $e);
}
if ($needsPartFile) {
if ($view && !$this->emitPreHooks($exists)) {
$partStorage->unlink($internalPartPath);
throw new Exception('Could not rename part file to final file, canceled by hook');
}
try {
$this->changeLock(ILockingProvider::LOCK_EXCLUSIVE);
} catch (LockedException $e) {
if ($needsPartFile) {
$partStorage->unlink($internalPartPath);
}
throw new FileLocked($e->getMessage(), $e->getCode(), $e);
}
// rename to correct path
try {
if ($run) {
$renameOkay = $storage->moveFromStorage($partStorage, $internalPartPath, $internalPath);
$fileExists = $storage->file_exists($internalPath);
}
if (!$run || $renameOkay === false || $fileExists === false) {
$renameOkay = $storage->moveFromStorage($partStorage, $internalPartPath, $internalPath);
$fileExists = $storage->file_exists($internalPath);
if ($renameOkay === false || $fileExists === false) {
\OC::$server->getLogger()->error('renaming part file to final file failed ($run: ' . ( $run ? 'true' : 'false' ) . ', $renameOkay: ' . ( $renameOkay ? 'true' : 'false' ) . ', $fileExists: ' . ( $fileExists ? 'true' : 'false' ) . ')', ['app' => 'webdav']);
throw new Exception('Could not rename part file to final file');
}