Add check for availability of /dev/urandom

Backport of https://github.com/owncloud/core/pull/16565 to stable8

1 files changed, 5 insertions, 0 deletions

diff --git a/core/js/setupchecks.js b/core/js/setupchecks.js
index d43a356999c..e6b375d0519 100644
--- a/core/js/setupchecks.js
+++ b/core/js/setupchecks.js
@@ -64,6 +64,11 @@
 							t('core', 'cURL is not installed, some functionality might not work. Please install the PHP cURL extension. Future versions will require installed cURL.')
 						);
 					}
+					if(!data.isUrandomAvailable) {
+						messages.push(
+							t('core', '/dev/urandom is not readable by PHP which is highly discouraged for security reasons. Further information can be found in our <a href="{docLink}">documentation</a>.', {docLink: data.securityDocs})
+						);
+					}
 				} else {
 					messages.push(t('core', 'Error occurred while checking server setup'));
 				}