Fix command line arguments for duplicity 2.1 (#2301)

Author: JoshData

management/backup.py

@@ -57,10 +57,11 @@ def parse_line(line):
 		"/usr/bin/duplicity",
 		"collection-status",
 		"--archive-dir", backup_cache_dir,
-		"--gpg-options", "--cipher-algo=AES256",
+		"--gpg-options", "'--cipher-algo=AES256'",
 		"--log-fd", "1",
-		get_duplicity_target_url(config),
-		] + get_duplicity_additional_args(env),
+		] + get_duplicity_additional_args(env) + [
+		get_duplicity_target_url(config)
+		],
 		get_duplicity_env_vars(env),
 		trap=True)
 	if code != 0:
@@ -227,8 +228,8 @@ def get_duplicity_additional_args(env):
 			port = 22
 
 		return [
-			f"--ssh-options= -i /root/.ssh/id_rsa_miab -p {port}",
-			f"--rsync-options= -e \"/usr/bin/ssh -oStrictHostKeyChecking=no -oBatchMode=yes -p {port} -i /root/.ssh/id_rsa_miab\"",
+			f"--ssh-options='-i /root/.ssh/id_rsa_miab -p {port}'",
+			f"--rsync-options='-e \"/usr/bin/ssh -oStrictHostKeyChecking=no -oBatchMode=yes -p {port} -i /root/.ssh/id_rsa_miab\"'",
 		]
 	elif get_target_type(config) == 's3':
 		# See note about hostname in get_duplicity_target_url.
@@ -321,11 +322,12 @@ def service_command(service, command, quit=None):
 			"--archive-dir", backup_cache_dir,
 			"--exclude", backup_root,
 			"--volsize", "250",
-			"--gpg-options", "--cipher-algo=AES256",
+			"--gpg-options", "'--cipher-algo=AES256'",
+			"--allow-source-mismatch"
+			] + get_duplicity_additional_args(env) + [
 			env["STORAGE_ROOT"],
 			get_duplicity_target_url(config),
-			"--allow-source-mismatch"
-			] + get_duplicity_additional_args(env),
+			],
 			get_duplicity_env_vars(env))
 	finally:
 		# Start services again.
@@ -343,8 +345,9 @@ def service_command(service, command, quit=None):
 		"--verbosity", "error",
 		"--archive-dir", backup_cache_dir,
 		"--force",
+		] + get_duplicity_additional_args(env) + [
 		get_duplicity_target_url(config)
-		] + get_duplicity_additional_args(env),
+		],
 		get_duplicity_env_vars(env))
 
 	# From duplicity's manual:
@@ -358,8 +361,9 @@ def service_command(service, command, quit=None):
 		"--verbosity", "error",
 		"--archive-dir", backup_cache_dir,
 		"--force",
+		] + get_duplicity_additional_args(env) + [
 		get_duplicity_target_url(config)
-		] + get_duplicity_additional_args(env),
+		],
 		get_duplicity_env_vars(env))
 
 	# Change ownership of backups to the user-data user, so that the after-bcakup
@@ -396,9 +400,10 @@ def run_duplicity_verification():
 		"--compare-data",
 		"--archive-dir", backup_cache_dir,
 		"--exclude", backup_root,
+		] + get_duplicity_additional_args(env) + [
 		get_duplicity_target_url(config),
 		env["STORAGE_ROOT"],
-	] + get_duplicity_additional_args(env), get_duplicity_env_vars(env))
+	], get_duplicity_env_vars(env))
 
 def run_duplicity_restore(args):
 	env = load_environment()
@@ -408,9 +413,23 @@ def run_duplicity_restore(args):
 		"/usr/bin/duplicity",
 		"restore",
 		"--archive-dir", backup_cache_dir,
-		get_duplicity_target_url(config),
-		] + get_duplicity_additional_args(env) + args,
-	get_duplicity_env_vars(env))
+		] + get_duplicity_additional_args(env) + [
+		get_duplicity_target_url(config)
+		] + args,
+		get_duplicity_env_vars(env))
+
+def print_duplicity_command():
+	import shlex
+	env = load_environment()
+	config = get_backup_config(env)
+	backup_cache_dir = os.path.join(env["STORAGE_ROOT"], 'backup', 'cache')
+	for k, v in get_duplicity_env_vars(env).items():
+		print(f"export {k}={shlex.quote(v)}")
+	print("duplicity", "{command}", shlex.join([
+		"--archive-dir", backup_cache_dir,
+		] + get_duplicity_additional_args(env) + [
+		get_duplicity_target_url(config)
+		]))
 
 def list_target_files(config):
 	import urllib.parse
@@ -618,6 +637,9 @@ def write_backup_config(env, newconfig):
 		# to duplicity. The restore path should be specified.
 		run_duplicity_restore(sys.argv[2:])
 
+	elif sys.argv[-1] == "--duplicity-command":
+		print_duplicity_command()
+
 	else:
 		# Perform a backup. Add --full to force a full backup rather than
 		# possibly performing an incremental backup.