1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
#!/usr/bin/env python3
#
# Copyright (C) 2019 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
#
"""Load config file from within config session.
Config file specified by URI or path (without scheme prefix).
Example: load https://somewhere.net/some.config
or
load /tmp/some.config
"""
import os
import sys
import gzip
import tempfile
import vyos.defaults
import vyos.remote
from vyos.configsource import ConfigSourceSession
from vyos.configtree import ConfigTree, DiffTree
from vyos.migrator import Migrator, VirtualMigrator, MigratorError
from vyos.util import cmd, DEVNULL
class LoadConfig(ConfigSourceSession):
"""A subclass for loading a config file.
This does not belong in configsource.py, and only has a single caller.
"""
def load_config(self, file_path):
try:
with open(file_path) as f:
config_file = f.read()
load_ct = ConfigTree(config_file)
except (OSError, ValueError) as e:
print(e)
return
eff_ct, _ = self.get_configtree_tuple()
diff = DiffTree(eff_ct, load_ct)
commands = diff.to_commands()
# on an empty set of 'add' or 'delete' commands, to_commands
# returns '\n'; prune below
command_list = commands.splitlines()
command_list = [c for c in command_list if c]
if not command_list:
return
for op in command_list:
try:
cmd(f'/opt/vyatta/sbin/my_{op}', shell=True, stderr=DEVNULL)
except OSError as e:
print(e)
return
file_name = sys.argv[1] if len(sys.argv) > 1 else 'config.boot'
configdir = vyos.defaults.directories['config']
protocols = ['scp', 'sftp', 'http', 'https', 'ftp', 'tftp']
def get_local_config(filename):
if os.path.isfile(filename):
fname = filename
elif os.path.isfile(os.path.join(configdir, filename)):
fname = os.path.join(configdir, filename)
else:
sys.exit(f"No such file '{filename}'")
if fname.endswith('.gz'):
with gzip.open(fname, 'rb') as f:
try:
config_str = f.read().decode()
except OSError as e:
sys.exit(e)
else:
with open(fname, 'r') as f:
try:
config_str = f.read()
except OSError as e:
sys.exit(e)
return config_str
if any(x in file_name for x in protocols):
config_string = vyos.remote.get_remote_config(file_name)
if not config_string:
sys.exit(f"No such config file at '{file_name}'")
else:
config_string = get_local_config(file_name)
config = LoadConfig()
print(f"Loading configuration from '{file_name}'")
with tempfile.NamedTemporaryFile() as fp:
with open(fp.name, 'w') as fd:
fd.write(config_string)
virtual_migration = VirtualMigrator(fp.name)
try:
virtual_migration.run()
except MigratorError as err:
sys.exit('{}'.format(err))
migration = Migrator(fp.name)
try:
migration.run()
except MigratorError as err:
sys.exit('{}'.format(err))
config.load_config(fp.name)
if config.session_changed():
print("Load complete. Use 'commit' to make changes effective.")
else:
print("No configuration changes to commit.")
|
