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-rwxr-xr-xsrc/conf_mode/system-display.py98
1 files changed, 98 insertions, 0 deletions
diff --git a/src/conf_mode/system-display.py b/src/conf_mode/system-display.py
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+++ b/src/conf_mode/system-display.py
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+#!/usr/bin/env python3
+#
+# Copyright (C) 2020 Francois Mertz fireboxled at gmail.com
+#
+# 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 import ConfigError
+from vyos.util import run
+from vyos.template import render
+
+from vyos import airbag
+airbag.enable()
+
+def get_config():
+ conf = Config()
+ base = ['system', 'display']
+ display = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
+ # Return a (possibly empty) configuration dictionary
+ return display
+
+def verify(config_dict):
+ if not config_dict:
+ return None
+
+ if 'model' not in config_dict:
+ raise ConfigError('Display model is [REQUIRED]')
+
+ if ( 'show' not in config_dict
+ or ( 'clock' not in config_dict['show']
+ and 'network' not in config_dict['show']
+ and 'host' not in config_dict['show']
+ )
+ ):
+ raise ConfigError('Display show must have a clock, host or network')
+
+ if ( 'network' in config_dict['show']
+ and 'interface' not in config_dict['show']['network']
+ ):
+ raise ConfigError('Display show network must have an interface')
+
+ if ( 'network' in config_dict['show']
+ and 'interface' in config_dict['show']['network']
+ and len(config_dict['show']['network']['interface']) > 3
+ ):
+ raise ConfigError('Display show network cannot have > 3 interfaces')
+
+ return None
+
+def generate(config_dict):
+ if not config_dict:
+ return None
+ # Render config file for daemon LCDd
+ render('/run/LCDd/LCDd.lo.conf', 'system-display/LCDd.conf.tmpl', config_dict)
+ # Render config file for client lcdproc
+ render('/run/lcdproc/lcdproc.lo.conf', 'system-display/lcdproc.conf.tmpl', config_dict)
+
+ return None
+
+def apply(config_dict):
+ # Stop client
+ run('systemctl stop lcdproc@lo.service')
+
+ if not config_dict or 'disabled' in config_dict:
+ # Stop server
+ run('systemctl stop LCDd@lo.service')
+ return None
+
+ # Restart server
+ run('systemctl restart LCDd@lo.service')
+ # Start client
+ run('systemctl start lcdproc@lo.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)