updater: handle json decode error in newer_commit_date() (#17925)

1 files changed, 11 insertions, 1 deletions

diff --git a/packaging/installer/netdata-updater.sh b/packaging/installer/netdata-updater.sh
index f1370c5609..fc8b39cdd5 100755
--- a/packaging/installer/netdata-updater.sh
+++ b/packaging/installer/netdata-updater.sh
@@ -533,7 +533,17 @@ newer_commit_date() {
   info "Checking if a newer version of the updater script is available."
 
   commit_check_url="https://api.github.com/repos/netdata/netdata/commits?path=packaging%2Finstaller%2Fnetdata-updater.sh&page=1&per_page=1"
-  python_version_check="from __future__ import print_function;import sys,json;data = json.load(sys.stdin);print(data[0]['commit']['committer']['date'] if isinstance(data, list) else '')"
+  python_version_check="
+from __future__ import print_function
+import sys, json
+
+try:
+    data = json.load(sys.stdin)
+except:
+    print('')
+else:
+    print(data[0]['commit']['committer']['date'] if isinstance(data, list) and data else '')
+"
 
   if command -v jq > /dev/null 2>&1; then
     commit_date="$(_safe_download "${commit_check_url}" /dev/stdout | jq '.[0].commit.committer.date' 2>/dev/null | tr -d '"')"