install/systemd: tglist-sync timer for follower boxes; INSTALL.md notes on systemd/cron

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
2026-09-26 23:33:48 +02:00
parent af1793a742
commit d18a0f0b91
5 changed files with 96 additions and 0 deletions
@@ -0,0 +1,38 @@
+#!/bin/bash
+# Follower-box sync of the canonical TG list.
+#
+# Pulls the master list from the svxportal master (its public /tglist.php) into
+# the LOCAL /etc/svxlink/tglist.json, so every local program reads ONE identical
+# list: svxdr (Lastheard TG name/Location) and the box's own /tglist.php (TG
+# Monitor) both read that local file. No extra daemon — a plain curl run by a
+# systemd timer.
+#
+# Master and fully-standalone boxes OWN the file locally (web editor) and must
+# NOT run this — leave UPSTREAM empty there (the timer is a no-op / not enabled).
+set -euo pipefail
+: "${UPSTREAM:=}"
+: "${DEST:=/etc/svxlink/tglist.json}"
+
+# Empty UPSTREAM = this box owns its list; nothing to sync.
+[ -n "$UPSTREAM" ] || { echo "UPSTREAM empty — this box owns its TG list, skipping sync"; exit 0; }
+
+tmp="$(mktemp)"; out="$(mktemp)"
+trap 'rm -f "$tmp" "$out"' EXIT
+
+curl -fsS -m 20 "$UPSTREAM" -o "$tmp"
+
+# Keep ONLY the canonical shape {tgs:[...],requests:[]}. Refuse to overwrite the
+# live file with anything that is not a valid list (a 404/HTML/partial body must
+# never blank the TG names) — last good copy then simply stays.
+python3 - "$tmp" "$out" <<'PY'
+import json, sys
+d = json.load(open(sys.argv[1]))
+tgs = d.get("tgs")
+if not isinstance(tgs, list) or not tgs:
+    raise SystemExit("upstream has no tgs list — refusing to overwrite")
+json.dump({"tgs": tgs, "requests": []}, open(sys.argv[2], "w"), indent=2)
+PY
+
+# www-data owns it so the web can still read it; atomic replace via install.
+install -o www-data -g www-data -m 0664 "$out" "$DEST"
+echo "TG list synced from $UPSTREAM -> $DEST"