fix: do not treat guest as share owner

Signed-off-by: Elizabeth Danzberger <lizzy7128@tutanota.de>

[skip ci]

lib/Controller/DocumentController.php

@@ -187,7 +187,8 @@ public function createFromTemplate(int $templateId, string $fileName, string $di
 
 		$template = $this->templateManager->get($templateId);
 		$urlSrc = $this->tokenManager->getUrlSrc($file);
-		$wopi = $this->tokenManager->generateWopiTokenForTemplate($template, $this->userId, $file->getId());
+		$isGuest = $this->userId === null;
+		$wopi = $this->tokenManager->generateWopiTokenForTemplate($template, $file->getId(), $this->userId, $isGuest);
 
 		$params = [
 			'permissions' => $template->getPermissions(),
@@ -400,7 +401,8 @@ public function token(int $fileId, ?string $shareToken = null, ?string $path = n
 				]);
 			}
 
-			$wopi = $this->getToken($file, $share);
+			$isGuest = $guestName || !$this->userId;
+			$wopi = $this->getToken($file, $share, null, $isGuest);
 
 			$this->tokenManager->setGuestName($wopi, $guestName);
 
@@ -489,7 +491,16 @@ private function getToken(File $file, ?IShare $share = null, int $version = null
 		// Pass through $version
 		$templateFile = $this->templateManager->getTemplateSource($file->getId());
 		if ($templateFile) {
-			return $this->tokenManager->generateWopiTokenForTemplate($templateFile, $share?->getShareOwner() ?? $this->userId, $file->getId());
+			$owneruid = $share?->getShareOwner() ?? $file->getOwner()->getUID();
+
+			return $this->tokenManager->generateWopiTokenForTemplate(
+				$templateFile,
+				$file->getId(),
+				$owneruid,
+				$isGuest,
+				false,
+				$share?->getPermissions()
+			);
 		}
 
 		return $this->tokenManager->generateWopiToken($this->getWopiFileId($file->getId(), $version), $share?->getToken(), $this->userId);

lib/Controller/WopiController.php

@@ -611,7 +611,8 @@ public function postFile(string $fileId, string $access_token): JSONResponse {
 
 		// Unless the editor is empty (public link) we modify the files as the current editor
 		$editor = $wopi->getEditorUid();
-		if ($editor === null && !$wopi->isRemoteToken()) {
+		$isPublic = $editor === null && !$wopi->isRemoteToken();
+		if ($isPublic) {
 			$editor = $wopi->getOwnerUid();
 		}
 
@@ -627,7 +628,6 @@ public function postFile(string $fileId, string $access_token): JSONResponse {
 				$file = $this->getFileForWopiToken($wopi);
 
 				$suggested = $this->request->getHeader('X-WOPI-RequestedName');
-
 				$suggested = mb_convert_encoding($suggested, 'utf-8', 'utf-7') . '.' . $file->getExtension();
 
 				if (strpos($suggested, '.') === 0) {
@@ -665,20 +665,8 @@ public function postFile(string $fileId, string $access_token): JSONResponse {
 				$suggested = $this->request->getHeader('X-WOPI-SuggestedTarget');
 				$suggested = mb_convert_encoding($suggested, 'utf-8', 'utf-7');
 
-				if ($suggested[0] === '.') {
-					$path = dirname($file->getPath()) . '/New File' . $suggested;
-				} elseif ($suggested[0] !== '/') {
-					$path = dirname($file->getPath()) . '/' . $suggested;
-				} else {
-					$path = $userFolder->getPath() . $suggested;
-				}
-
-				if ($path === '') {
-					return new JSONResponse([
-						'status' => 'error',
-						'message' => 'Cannot create the file'
-					]);
-				}
+				$parent = $isPublic ? dirname($file->getPath()) : $userFolder->getPath();
+				$path = $this->normalizePath($suggested, $parent);
 
 				// create the folder first
 				if (!$this->rootFolder->nodeExists(dirname($path))) {
@@ -692,8 +680,8 @@ public function postFile(string $fileId, string $access_token): JSONResponse {
 
 			$content = fopen('php://input', 'rb');
 			// Set the user to register the change under his name
-			$this->userScopeService->setUserScope($wopi->getEditorUid());
-			$this->userScopeService->setFilesystemScope($wopi->getEditorUid());
+			$this->userScopeService->setUserScope($editor);
+			$this->userScopeService->setFilesystemScope($editor);
 
 			try {
 				$this->wrappedFilesystemOperation($wopi, function () use ($file, $content) {
@@ -722,6 +710,13 @@ public function postFile(string $fileId, string $access_token): JSONResponse {
 		}
 	}
 
+	private function normalizePath(string $path, ?string $parent = null): string {
+		$path = str_starts_with($path, '/') ? $path : '/' . $path;
+		$parent = is_null($parent) ? '' : rtrim($parent, '/');
+
+		return $parent . $path;
+	}
+
 	private function lock(Wopi $wopi, string $lock): JSONResponse {
 		try {
 			$lock = $this->lockManager->lock(new LockContext(

lib/TokenManager.php

@@ -41,6 +41,7 @@
 use OCP\Share\IManager;
 use OCP\Share\IShare;
 use OCP\Util;
+use Psr\Log\LoggerInterface;
 
 class TokenManager {
 	/** @var IRootFolder */
@@ -151,7 +152,7 @@ public function generateWopiToken(string $fileId, ?string $shareToken = null, ?s
 			// no active user login while generating the token
 			// this is required during WopiPutRelativeFile
 			if (is_null($editoruid)) {
-				\OC::$server->getLogger()->warning('Generating token for SaveAs without editoruid');
+				$this->logger->warning('Generating token for SaveAs without editoruid');
 				$updatable = true;
 			} else {
 				// Make sure we use the user folder if available since fetching all files by id from the root might be expensive
@@ -252,7 +253,11 @@ public function generateWopiTokenForTemplate(File $templateFile, ?string $userId
 			throw new NotPermittedException();
 		}
 
-		$updatable = $targetFile->isUpdateable() && $this->permissionManager->userCanEdit($editoruid);
+		$updatable = $targetFile->isUpdateable();
+		if (!is_null($sharePermissions)) {
+			$shareUpdatable = (bool)($sharePermissions & \OCP\Constants::PERMISSION_UPDATE);
+			$updatable = $updatable && $shareUpdatable;
+		}
 
 		$serverHost = $this->urlGenerator->getAbsoluteURL('/');
 

tests/features/bootstrap/WopiContext.php

@@ -31,13 +31,16 @@
 use GuzzleHttp\Psr7\Utils;
 use JuliusHaertl\NextcloudBehat\Context\FilesContext;
 use JuliusHaertl\NextcloudBehat\Context\ServerContext;
+use JuliusHaertl\NextcloudBehat\Context\SharingContext;
 use PHPUnit\Framework\Assert;
 
 class WopiContext implements Context {
 	/** @var ServerContext */
 	private $serverContext;
 	/** @var FilesContext */
 	private $filesContext;
+	/** @var SharingContext */
+	private $sharingContext;
 
 	private $downloadedFile;
 	private $response;
@@ -56,6 +59,7 @@ public function gatherContexts(BeforeScenarioScope $scope) {
 		$environment = $scope->getEnvironment();
 		$this->serverContext = $environment->getContext(ServerContext::class);
 		$this->filesContext = $environment->getContext(FilesContext::class);
+		$this->sharingContext = $environment->getContext(SharingContext::class);
 	}
 
 	public function getWopiEndpointBaseUrl() {
@@ -105,6 +109,32 @@ public function collaboraPuts($source) {
 		}
 	}
 
+	/**
+	 * @Then /^Create new document as guest with file name "([^"]*)"$/
+	 */
+	public function createDocumentAsGuest(string $name) {
+		$client = new Client();
+		$options = [
+			'body' => json_encode([
+				'directoryPath' => '/',
+				'fileName' => $name,
+				'mimeType' => 'application/vnd.oasis.opendocument.text',
+				'shareToken' => $this->sharingContext->getLastShareData()['token'],
+				'templateId' => 0,
+			]),
+			'headers' => [
+				'Content-Type' => 'application/json',
+				'OCS-ApiRequest' => 'true'
+			],
+		];
+
+		try {
+			$this->response = $client->post($this->getWopiEndpointBaseUrl() . 'ocs/v2.php/apps/richdocuments/api/v1/file', $options);
+		} catch (\GuzzleHttp\Exception\ClientException $e) {
+			$this->response = $e->getResponse();
+		}
+	}
+
 	/**
 	 * @Then /^the WOPI HTTP status code should be "([^"]*)"$/
 	 * @param int $statusCode

tests/features/wopi.feature

@@ -342,3 +342,19 @@ Feature: WOPI
       | UserFriendlyName | user2-displayname |
     And Collabora downloads the file
     And Collabora downloads the file and it is equal to "./../emptyTemplates/template.ods"
+
+  Scenario: Save as guest user to owner root
+    Given as user "user1"
+    And User "user1" creates a folder "SharedFolder"
+    And as "user1" create a share with
+      | path        | /SharedFolder |
+      | shareType   | 3             |
+    And Updating last share with
+      | permissions | 31 |
+    And Create new document as guest with file name "some-guest-document.odt"
+    And as "user1" the file "/SharedFolder/some-guest-document.odt" exists
+    And a guest opens the file "some-guest-document.odt" of the shared link
+    And Collabora fetches checkFileInfo
+    And Collabora saves the content of "./../emptyTemplates/template.ods" as "/saved-as-guest-document.odt"
+    And as "user1" the file "/SharedFolder/saved-as-guest-document.odt" exists
+    And as "user1" the file "/saved-as-guest-document.odt" does not exist