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-rwxr-xr-xsrc/conf_mode/system-login-radius.py138
1 files changed, 138 insertions, 0 deletions
diff --git a/src/conf_mode/system-login-radius.py b/src/conf_mode/system-login-radius.py
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index 000000000..8f5d7bc36
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+++ b/src/conf_mode/system-login-radius.py
@@ -0,0 +1,138 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2020 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/>.
+
+import sys
+import os
+import jinja2
+
+from pwd import getpwall, getpwnam
+from stat import S_IRUSR, S_IWUSR
+
+from vyos.config import Config
+from vyos.configdict import list_diff
+from vyos import ConfigError
+
+radius_config_file = "/etc/pam_radius_auth.conf"
+radius_config_tmpl = """
+# Automatically generated by VyOS
+# RADIUS configuration file
+# server[:port] shared_secret timeout (s) source_ip
+{% if server -%}
+{% for s in server -%}
+{{ s.address }}:{{ s.port }} {{ s.key }} {{ s.timeout }} {% if source_address -%}{{ source_address }}{% endif %}
+{% endfor -%}
+
+priv-lvl 15
+mapped_priv_user radius_priv_user
+{% endif %}
+
+"""
+
+default_config_data = {
+ 'server': [],
+ 'source_address': '',
+}
+
+def get_local_users():
+ """Returns list of dynamically allocated users (see Debian Policy Manual)"""
+ local_users = []
+ for p in getpwall():
+ username = p[0]
+ uid = getpwnam(username).pw_uid
+ if uid in range(1000, 29999):
+ if username not in ['radius_user', 'radius_priv_user']:
+ local_users.append(username)
+
+ return local_users
+
+def get_config():
+ radius = default_config_data
+ conf = Config()
+ base_level = ['system', 'login', 'radius']
+
+ if not conf.exists(base_level):
+ return radius
+
+ conf.set_level(base_level)
+
+ if conf.exists(['source-address']):
+ radius['source_address'] = conf.return_value(['source-address'])
+
+ # Read in all RADIUS servers and store to list
+ for server in conf.list_nodes(['server']):
+ radius = {
+ 'address': server,
+ 'key': '',
+ 'port': '1812',
+ 'timeout': '2'
+ }
+ conf.set_level(base_level + ['server', server])
+
+ # RADIUS shared secret
+ if conf.exists(['key']):
+ radius['key'] = conf.return_value(['key'])
+
+ # RADIUS authentication port
+ if conf.exists(['port']):
+ radius['port'] = conf.return_value(['port'])
+
+ # RADIUS session timeout
+ if conf.exists(['timeout']):
+ radius['timeout'] = conf.return_value(['timeout'])
+
+ # Append individual RADIUS server configuration to global server list
+ radius['server'].append(radius)
+
+ return radius
+
+def verify(radius):
+ pass
+
+def generate(radius):
+ if len(radius['server']) > 0:
+ tmpl = jinja2.Template(radius_config_tmpl)
+ config_text = tmpl.render(radius)
+ with open(radius_config_file, 'w') as f:
+ f.write(config_text)
+
+ uid = getpwnam('root').pw_uid
+ gid = getpwnam('root').pw_gid
+ os.chown(radius_config_file, uid, gid)
+ os.chmod(radius_config_file, S_IRUSR | S_IWUSR)
+ else:
+ os.unlink(radius_config_file)
+
+ return None
+
+def apply(radius):
+ if len(radius['server']) > 0:
+ # Enable RADIUS in PAM
+ os.system("DEBIAN_FRONTEND=noninteractive pam-auth-update --package --enable radius")
+ else:
+ # Disable RADIUS in PAM
+ os.system("DEBIAN_FRONTEND=noninteractive pam-auth-update --package --remove radius")
+
+ return None
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ sys.exit(1)