system: T3078: rename "system options" -> "system option"

By design a CLI node should not be named by its plural but rather describe it
as singular.

1 files changed, 136 insertions, 0 deletions

diff --git a/src/conf_mode/system-option.py b/src/conf_mode/system-option.py
new file mode 100755
index 000000000..2376e5d44
--- /dev/null
+++ b/src/conf_mode/system-option.py
@@ -0,0 +1,136 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2019-2020 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 netifaces import interfaces
+from sys import exit
+from time import sleep
+
+from vyos.config import Config
+from vyos.configdict import dict_merge
+from vyos.template import render
+from vyos.util import cmd
+from vyos.validate import is_addr_assigned
+from vyos.xml import defaults
+from vyos import ConfigError
+from vyos import airbag
+airbag.enable()
+
+curlrc_config = r'/etc/curlrc'
+ssh_config = r'/etc/ssh/ssh_config'
+systemd_action_file = '/lib/systemd/system/ctrl-alt-del.target'
+
+def get_config(config=None):
+    if config:
+        conf = config
+    else:
+        conf = Config()
+    base = ['system', 'option']
+    options = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
+
+    # We have gathered the dict representation of the CLI, but there are default
+    # options which we need to update into the dictionary retrived.
+    default_values = defaults(base)
+    options = dict_merge(default_values, options)
+
+    return options
+
+def verify(options):
+    if 'http_client' in options:
+        config = options['http_client']
+        if 'source_interface' in config:
+            if not config['source_interface'] in interfaces():
+                raise ConfigError(f'Source interface {source_interface} does not '
+                                  f'exist'.format(**config))
+
+        if {'source_address', 'source_interface'} <= set(config):
+            raise ConfigError('Can not define both HTTP source-interface and source-address')
+
+        if 'source_address' in config:
+            if not is_addr_assigned(config['source_address']):
+                raise ConfigError('No interface with give address specified!')
+
+    if 'ssh_client' in options:
+        config = options['ssh_client']
+        if 'source_address' in config:
+            if not is_addr_assigned(config['source_address']):
+                raise ConfigError('No interface with give address specified!')
+
+    return None
+
+def generate(options):
+    render(curlrc_config, 'system/curlrc.tmpl', options, trim_blocks=True)
+    render(ssh_config, 'system/ssh_config.tmpl', options, trim_blocks=True)
+    return None
+
+def apply(options):
+    # System bootup beep
+    if 'startup_beep' in options:
+        cmd('systemctl enable vyos-beep.service')
+    else:
+        cmd('systemctl disable vyos-beep.service')
+
+    # Ctrl-Alt-Delete action
+    if os.path.exists(systemd_action_file):
+        os.unlink(systemd_action_file)
+    if 'ctrl_alt_del' in options:
+        if options['ctrl_alt_del'] == 'reboot':
+            os.symlink('/lib/systemd/system/reboot.target', systemd_action_file)
+        elif options['ctrl_alt_del'] == 'poweroff':
+            os.symlink('/lib/systemd/system/poweroff.target', systemd_action_file)
+
+    # Configure HTTP client
+    if 'http_client' not in options:
+        if os.path.exists(curlrc_config):
+            os.unlink(curlrc_config)
+
+    # Configure SSH client
+    if 'ssh_client' not in options:
+        if os.path.exists(ssh_config):
+            os.unlink(ssh_config)
+
+    # Reboot system on kernel panic
+    with open('/proc/sys/kernel/panic', 'w') as f:
+        if 'reboot_on_panic' in options:
+            f.write('60')
+        else:
+            f.write('0')
+
+    # tuned - performance tuning
+    if 'performance' in options:
+        cmd('systemctl restart tuned.service')
+        # wait until daemon has started before sending configuration
+        while (int(os.system('systemctl is-active --quiet tuned.service')) != 0):
+            sleep(0.250)
+        cmd('tuned-adm profile network-{performance}'.format(**options))
+    else:
+        cmd('systemctl stop tuned.service')
+
+    # Keyboard layout - there will be always the default key inside the dict
+    # but we check for key existence anyway
+    if 'keyboard_layout' in options:
+        cmd('loadkeys -C /dev/console {keyboard_layout}'.format(**options))
+
+if __name__ == '__main__':
+    try:
+        c = get_config()
+        verify(c)
+        generate(c)
+        apply(c)
+    except ConfigError as e:
+        print(e)
+        exit(1)