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-rwxr-xr-xsrc/conf_mode/system_lcd.py84
1 files changed, 84 insertions, 0 deletions
diff --git a/src/conf_mode/system_lcd.py b/src/conf_mode/system_lcd.py
new file mode 100755
index 000000000..0ad1318f0
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+++ b/src/conf_mode/system_lcd.py
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+#!/usr/bin/env python3
+#
+# Copyright 2020 VyOS maintainers and contributors <maintainers@vyos.io>
+#
+# 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 sys import exit
+
+from vyos.config import Config
+from vyos.util import call
+from vyos.util import find_device_file
+from vyos.template import render
+from vyos import ConfigError
+from vyos import airbag
+airbag.enable()
+
+lcdd_conf = '/run/LCDd/LCDd.conf'
+lcdproc_conf = '/run/lcdproc/lcdproc.conf'
+
+def get_config():
+ conf = Config()
+ base = ['system', 'lcd']
+ lcd = conf.get_config_dict(base, key_mangling=('-', '_'),
+ get_first_key=True)
+ # Return (possibly empty) dictionary
+ return lcd
+
+def verify(lcd):
+ if not lcd:
+ return None
+
+ if not {'device', 'model'} <= set(lcd):
+ raise ConfigError('Both device and driver must be set!')
+
+ return None
+
+def generate(lcd):
+ if not lcd:
+ return None
+
+ if 'device' in lcd:
+ lcd['device'] = find_device_file(lcd['device'])
+
+ # Render config file for daemon LCDd
+ render(lcdd_conf, 'lcd/LCDd.conf.tmpl', lcd, trim_blocks=True)
+ # Render config file for client lcdproc
+ render(lcdproc_conf, 'lcd/lcdproc.conf.tmpl', lcd, trim_blocks=True)
+
+ return None
+
+def apply(lcd):
+ if not lcd:
+ call('systemctl stop lcdproc.service LCDd.service')
+
+ for file in [lcdd_conf, lcdproc_conf]:
+ if os.path.exists(file):
+ os.remove(file)
+ else:
+ # Restart server
+ call('systemctl restart LCDd.service lcdproc.service')
+
+ return None
+
+if __name__ == '__main__':
+ try:
+ config_dict = get_config()
+ verify(config_dict)
+ generate(config_dict)
+ apply(config_dict)
+ except ConfigError as e:
+ print(e)
+ exit(1)