added support for fallback config files

config.json.example

@@ -1,14 +1,10 @@
 {
-	"host": "decade.cz",
+	"host": "nice.wafe.eu",
 	"user": "tunnel",
 	"mapping": [
 		{
-			"remote": 50022,
+			"remote": 39999,
 			"local": 22
-		},
-		{
-			"remote": 8000,
-			"local": 80
 		}
 	]
 }

lib/safe-harbor.py

@@ -6,14 +6,27 @@ import json
 import subprocess
 import sys
 
+def load_cfg(path):
+	with open(path) as f:
+		return json.loads(jsmin.jsmin(f.read()))
+
 if __name__ == "__main__":
-	if len(sys.argv) == 2:
-		cfg_path = sys.argv[1]
-	else:
-		cfg_path = "/etc/safe-harbor/config.json"
+	# try config files in the order they are passed to us
+	# first one wins
 	
-	with open(cfg_path) as f:
-		cfg = json.loads(jsmin.jsmin(f.read()))
+	cfg = None
+	
+	for path in sys.argv[1:]:
+		try:
+			cfg = load_cfg(path)
+			break
+		except Exception as e:
+			print("! cfg file %s failed to load (%s)" %(path, e))
+			
+	
+	if not cfg:
+		print("!!! unable to load any configuration")
+		sys.exit(1)
 	
 	command = ["/usr/bin/ssh", "-o", "ServerAliveInterval 45", "-o", "ServerAliveCountMax 2", "-o", "ExitOnForwardFailure yes", "-N"]
 	

systemd/safe-harbor@.service

@@ -4,7 +4,7 @@ After=network.target
 
 [Service]
 User=%i
-ExecStart=/usr/bin/python3 /usr/lib/safe-harbor/safe-harbor.py
+ExecStart=/usr/bin/python3 /usr/lib/safe-harbor/safe-harbor.py /state/safe-harbor.json /etc/safe-harbor/config.json
 Restart=always
 RestartSec=90