From 074134638538fd95d484ccd041da9a96cdfb6b3c Mon Sep 17 00:00:00 2001
From: Morris Jobke <hey@morrisjobke.de>
Date: Thu, 3 Nov 2016 10:18:16 +0100
Subject: Show a hint for system based cron user name

* makes it easier to setup cron job
* gives hints for PHP documentation
* disables the cron setting if requirements not met
* fixes #1989

Signed-off-by: Morris Jobke <hey@morrisjobke.de>
---
 settings/templates/admin/server.php | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

(limited to 'settings')

diff --git a/settings/templates/admin/server.php b/settings/templates/admin/server.php
index 02d247e1b18..430ca6ac8e2 100644
--- a/settings/templates/admin/server.php
+++ b/settings/templates/admin/server.php
@@ -201,9 +201,22 @@
 		<input type="radio" name="mode" value="cron" class="radio"
 			   id="backgroundjobs_cron" <?php if ($_['backgroundjobs_mode'] === "cron") {
 			print_unescaped('checked="checked"');
-		} ?>>
+		}
+		if (!$_['cli_based_cron_possible']) {
+			print_unescaped('disabled');
+		}?>>
 		<label for="backgroundjobs_cron">Cron</label><br/>
-		<em><?php p($l->t("Use system's cron service to call the cron.php file every 15 minutes.")); ?></em>
+		<em><?php p($l->t("Use system's cron service to call the cron.php file every 15 minutes.")); ?>
+			<?php if($_['cli_based_cron_possible']) {
+				p($l->t('The cron.php needs to be executed by the system user "%s".', [$_['cli_based_cron_user']]));
+			} else {
+				print_unescaped(str_replace(
+					['{linkstart}', '{linkend}'],
+					['<a href="http://php.net/manual/en/book.posix.php">', ' ↗</a>'],
+					$l->t('To run this you need the PHP posix extension. See {linkstart}PHP documentation{linkend} for more details.')
+				));
+		} ?></em>
+
 	</p>
 </div>
 
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