Minor comment change

don't returns core updates (!), we
workaround that by calling occ update:check

monitoring/check_valisechaprilorg_update

@@ -1,6 +1,6 @@
 #! /bin/bash
 #
-# Copyright (C) 2019 Laurent Poujoulat <lpoujoulat@april.org>
+# Copyright (C) 2020 Laurent Poujoulat <lpoujoulat@april.org>
 #
 # This file is part of valise.chapril.org
 #
@@ -25,15 +25,7 @@
 # ================================================
 
 # Configuration data
-CURL_CREDENTIAL="/etc/valise.chapril.org/curl_credential"
-
-# Extract a json value by path (given as argument)
-# The global JSON state is expected to be in NEXTCLOUD_STATE
-# Only give the path part within the ocs.data  section
-getNcState()
-{
-    echo ${NEXTCLOUD_STATE} | jq ".ocs.data.$1"
-}
+NEXTCLOUD_ROOT="/var/www/valise.chapril.org"
 
 # Returns script usage
 function usage() 
@@ -41,23 +33,40 @@ function usage()
 	echo "Usage: $(basename $0)"
 }
 
-
 # Main entry point
+
+# By default, we assume to fail
 EXIT_RESULT=1
 
-# Read and store the current service state
-NEXTCLOUD_STATE=`curl --silent --netrc-file ${CURL_CREDENTIAL} http://localhost/ocs/v2.php/apps/serverinfo/api/v1/info?format=json`
-
+# Usage check
 if [ "$#" -ne 0 ]
 then
 	usage
 else
 
-	# Read and store the current service state
-	NEXTCLOUD_STATE=`curl --silent --netrc-file ${CURL_CREDENTIAL} http://localhost/ocs/v2.php/apps/serverinfo/api/v1/info?format=json`
+	# Currently, nor the serverinfo API, nor the occ command has a clean way of checking both the core and apps update status
+	# So we trick this by calling the occ update:check command and processing the output
+	cd ${NEXTCLOUD_ROOT}
+	UPDATE_LIST=$(sudo -u www-data php occ update:check)
+
+	if [ $? != 0 ]
+	then
+        	echo "Failed to check Nextcloud update"
+	else
+
+		# OK, we have the human readable status, let's process it
+		echo ${UPDATE_LIST} | grep -q "Everything up to date"
+
+		if [ $? == 0 ]
+		then 
+			echo "OK"
+			EXIT_RESULT=0
+		else
+			echo ${UPDATE_LIST}
+		fi
+
+	fi
 
-	getNcState "nextcloud.system.apps.num_updates_available"
-	
 fi
 
 exit ${EXIT_RESULT}