The CSP nonce is based on the CSRF token. This token does not change,
unless you log in (or out). In case of the session data being lost,
e.g. because php gets rid of old sessions, a new CSRF token is gen-
erated. While this is fine in theory, it actually caused some annoying
problems where the browser restored a tab and Nextcloud js was blocked
due to an outdated nonce.
The main problem here is that, while processing the request, we write
out security headers relatively early. At that point the CSRF token
is known/generated and transformed into a CSP nonce. During this request,
however, we also log the user in because the session information was
lost. At that point we also refresh the CSRF token, which eventually
causes the browser to block any scripts as the nonce in the header
does not match the one which is used to include scripts.
This patch adds a flag to indicate whether the CSRF token should be
refreshed or not. It is assumed that refreshing is only necessary
if we want to re-generate the session id too. To my knowledge, this
case only happens on fresh logins, not when we recover from a deleted
session file.
Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>
In some not yet completely determined configurations, the following error could occur while writing a file:
Error: Call to a member function getUsers() on null
/var/www/nextcloud/lib/private/Share20/Manager.php - line 1277: OC\Share20\DefaultShareProvider->getAccessList(Array, true)
/var/www/nextcloud/lib/private/Share20/ShareHelper.php - line 51: OC\Share20\Manager->getAccessList(Object(OC\Files\Node\Folder), true, true)
/var/www/nextcloud/apps/activity/lib/FilesHooks.php - line 616: OC\Share20\ShareHelper->getPathsForAccessList(Object(OC\Files\Node\File))
/var/www/nextcloud/apps/activity/lib/FilesHooks.php - line 196: OCA\Activity\FilesHooks->getUserPathsFromPath('/path/to/file', 'user')
/var/www/nextcloud/apps/activity/lib/FilesHooks.php - line 157: OCA\Activity\FilesHooks->addNotificationsForFileAction('/path/to/file', 'file_changed', 'changed_self', 'changed_by')
/var/www/nextcloud/apps/activity/lib/FilesHooksStatic.php - line 55: OCA\Activity\FilesHooks->fileUpdate('/path/to/file')
/var/www/nextcloud/lib/private/legacy/hook.php - line 106: OCA\Activity\FilesHooksStatic fileUpdate(Array)
/var/www/nextcloud/lib/private/Files/View.php - line 1245: OC_Hook emit('OC_Filesystem', 'post_update', Array)
/var/www/nextcloud/lib/private/Files/View.php - line 1173: OC\Files\View->runHooks(Array, '/path/to/file', true)
/var/www/nextcloud/lib/private/Files/View.php - line 679: OC\Files\View->basicOperation('file_put_conten...', '/path/to/file', Array, '<?xml version="...')
/var/www/nextcloud/lib/private/Files/Node/File.php - line 64: OC\Files\View->file_put_contents('/path/to/file', '<?xml version="...')
[...]
Signed-off-by: Jan-Philipp Litza <janphilipp@litza.de>
The helper funtion did not handle the response correctly and basically
only returned the last share with tags.
This is a simple rewrite. That is still understandable. Loops maybe more
than strictly required. But preformance is not the issue here.
Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
* Store the auth state in the session so we don't have to query it every
time.
* Added some tests
Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
Joas Schilling
Christoph Wurst
Nextcloud bot
John Molakvoæ (skjnldsv)
Morris Jobke
Roeland Jago Douma
Lukas Reschke
Roeland Jago Douma
Jan-Philipp Litza
Julius Härtl
Christopher Bartz
blizzz
Bjoern Schiessle