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authorChristian Breunig <christian@breunig.cc>2023-12-30 23:25:20 +0100
committerChristian Breunig <christian@breunig.cc>2023-12-31 23:49:48 +0100
commit4ef110fd2c501b718344c72d495ad7e16d2bd465 (patch)
treee98bf08f93c029ec4431a3b6ca078e7562e0cc58 /src/conf_mode/system_login_banner.py
parent2286b8600da6c631b17e1d5b9b341843e50f9abf (diff)
downloadvyos-1x-4ef110fd2c501b718344c72d495ad7e16d2bd465.tar.gz
vyos-1x-4ef110fd2c501b718344c72d495ad7e16d2bd465.zip
T5474: establish common file name pattern for XML conf mode commands
We will use _ as CLI level divider. The XML definition filename and also the Python helper should match the CLI node. Example: set interfaces ethernet -> interfaces_ethernet.xml.in set interfaces bond -> interfaces_bond.xml.in set service dhcp-server -> service_dhcp-server-xml.in
Diffstat (limited to 'src/conf_mode/system_login_banner.py')
-rwxr-xr-xsrc/conf_mode/system_login_banner.py107
1 files changed, 107 insertions, 0 deletions
diff --git a/src/conf_mode/system_login_banner.py b/src/conf_mode/system_login_banner.py
new file mode 100755
index 000000000..65fa04417
--- /dev/null
+++ b/src/conf_mode/system_login_banner.py
@@ -0,0 +1,107 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2020-2021 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/>.
+
+from sys import exit
+from copy import deepcopy
+
+from vyos.config import Config
+from vyos.utils.file import write_file
+from vyos import ConfigError
+from vyos import airbag
+airbag.enable()
+
+try:
+ with open('/usr/share/vyos/default_motd') as f:
+ motd = f.read()
+except:
+ # Use an empty banner if the default banner file cannot be read
+ motd = "\n"
+
+PRELOGIN_FILE = r'/etc/issue'
+PRELOGIN_NET_FILE = r'/etc/issue.net'
+POSTLOGIN_FILE = r'/etc/motd'
+
+default_config_data = {
+ 'issue': 'Welcome to VyOS - \\n \\l\n\n',
+ 'issue_net': '',
+ 'motd': motd
+}
+
+def get_config(config=None):
+ banner = deepcopy(default_config_data)
+ if config:
+ conf = config
+ else:
+ conf = Config()
+ base_level = ['system', 'login', 'banner']
+
+ if not conf.exists(base_level):
+ return banner
+ else:
+ conf.set_level(base_level)
+
+ # Post-Login banner
+ if conf.exists(['post-login']):
+ tmp = conf.return_value(['post-login'])
+ # post-login banner can be empty as well
+ if tmp:
+ tmp = tmp.replace('\\n','\n')
+ tmp = tmp.replace('\\t','\t')
+ # always add newline character
+ tmp += '\n'
+ else:
+ tmp = ''
+
+ banner['motd'] = tmp
+
+ # Pre-Login banner
+ if conf.exists(['pre-login']):
+ tmp = conf.return_value(['pre-login'])
+ # pre-login banner can be empty as well
+ if tmp:
+ tmp = tmp.replace('\\n','\n')
+ tmp = tmp.replace('\\t','\t')
+ # always add newline character
+ tmp += '\n'
+ else:
+ tmp = ''
+
+ banner['issue'] = banner['issue_net'] = tmp
+
+ return banner
+
+def verify(banner):
+ pass
+
+def generate(banner):
+ pass
+
+def apply(banner):
+ write_file(PRELOGIN_FILE, banner['issue'])
+ write_file(PRELOGIN_NET_FILE, banner['issue_net'])
+ write_file(POSTLOGIN_FILE, banner['motd'])
+
+ return None
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ exit(1)