1 files changed, 116 insertions, 0 deletions
diff --git a/src/conf_mode/system_serial-proxy.py b/src/conf_mode/system_serial-proxy.py
new file mode 100755
index 000000000..83369d39d
--- /dev/null
+++ b/src/conf_mode/system_serial-proxy.py
@@ -0,0 +1,116 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2018-2020 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 os
+
+from copy import deepcopy
+from sys import exit
+
+from vyos.config import Config
+from vyos.template import render
+from vyos.util import call
+from vyos import ConfigError
+
+config_file = r'/run/ser2net/ser2net.conf'
+
+default_config_data = {
+    'devices': [],
+}
+
+def get_config():
+    proxy = deepcopy(default_config_data)
+    conf = Config()
+    base = ['service', 'serial-proxy']
+
+    if not conf.exists(base):
+        return None
+    else:
+        conf.set_level(base)
+
+    for serial_port in conf.list_nodes(['device']):
+        conf.set_level(base + ['device', serial_port])
+        serial = {
+            'data_bits': '',
+            'parity': '',
+            'port': '',
+            'serial_port': '/dev/serial/by-bus/' + serial_port,
+            'speed': '',
+            'stop_bits': '',
+            'timeout': '600'
+        }
+
+        if conf.exists(['data-bits']):
+            serial['data_bits'] = conf.return_value(['data-bits'])
+
+        if conf.exists(['stop-bits']):
+            serial['stop_bits'] = conf.return_value(['stop-bits'])
+
+        if conf.exists(['parity']):
+            serial['parity'] = conf.return_value(['parity'])
+
+        if conf.exists(['port']):
+            serial['port'] = conf.return_value(['port'])
+
+        if conf.exists(['speed']):
+            serial['speed'] = conf.return_value(['speed'])
+
+        proxy['devices'].append(serial)
+
+    return proxy
+
+def verify(proxy):
+    if not proxy:
+        return None
+
+    for device in proxy['devices']:
+        if not os.path.exists('{serial_port}'.format(**device)):
+            raise ConfigError('Serial interface "{serial_port} does not exist"'
+                              .format(**device))
+
+        for key in ['data_bits', 'parity', 'port', 'speed', 'stop_bits']:
+            if not device[key]:
+                value = key.replace('_','-')
+                raise ConfigError(f'{value} option must be defined!')
+
+    return None
+
+def generate(proxy):
+    if not proxy:
+        return None
+
+    render(config_file, 'ser2net/ser2net.conf.tmpl', proxy)
+    return None
+
+def apply(proxy):
+    if not proxy:
+        call('systemctl stop ser2net.service')
+        if os.path.isfile(config_file):
+            os.unlink(config_file)
+
+        return None
+
+    call('systemctl start ser2net.service')
+    return None
+
+if __name__ == '__main__':
+    try:
+        c = get_config()
+        verify(c)
+        generate(c)
+        apply(c)
+    except ConfigError as e:
+        print(e)
+        exit(1)