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-rwxr-xr-xsrc/conf_mode/system-syslog.py320
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diff --git a/src/conf_mode/system-syslog.py b/src/conf_mode/system-syslog.py
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+#!/usr/bin/env python3
+#
+# Copyright (C) 2018 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 re
+import jinja2
+
+from vyos.config import Config
+from vyos import ConfigError
+
+# config templates
+
+# /etc/rsyslog.d/vyos-rsyslog.conf ###
+configs = '''
+## generated by syslog.py ##
+## file based logging
+{% if files['global']['marker'] -%}
+$ModLoad immark
+{% if files['global']['marker-interval'] %}
+$MarkMessagePeriod {{files['global']['marker-interval']}}
+{% endif %}
+{% endif -%}
+{% if files['global']['preserver_fqdn'] -%}
+$PreserveFQDN on
+{% endif -%}
+{% for file in files %}
+$outchannel {{file}},{{files[file]['log-file']}},{{files[file]['max-size']}},{{files[file]['action-on-max-size']}}
+{{files[file]['selectors']}} :omfile:${{file}}
+{% endfor %}
+{% if console %}
+## console logging
+{% for con in console %}
+{{console[con]['selectors']}} /dev/console
+{% endfor %}
+{% endif %}
+{% if hosts %}
+## remote logging
+{% for host in hosts %}
+{% if hosts[host]['proto'] == 'tcp' %}
+{{hosts[host]['selectors']}} @@{{host}}
+{% else %}
+{{hosts[host]['selectors']}} @{{host}}
+{% endif %}
+{% endfor %}
+{% endif %}
+{% if user %}
+{% for u in user %}
+{{user[u]['selectors']}} :omusrmsg:{{u}}
+{% endfor %}
+{% endif %}
+'''
+
+logrotate_configs = '''
+{% for file in files %}
+{{files[file]['log-file']}} {
+ missingok
+ notifempty
+ create
+ rotate {{files[file]['max-files']}}
+ size={{files[file]['max-size']//1024}}k
+ postrotate
+ invoke-rc.d rsyslog rotate > /dev/null
+ endscript
+}
+{% endfor %}
+'''
+# config templates end
+
+
+def get_config():
+ c = Config()
+ if not c.exists('system syslog'):
+ return None
+ c.set_level('system syslog')
+
+ config_data = {
+ 'files': {},
+ 'console': {},
+ 'hosts': {},
+ 'user': {}
+ }
+
+ #
+ # /etc/rsyslog.d/vyos-rsyslog.conf
+ # 'set system syslog global'
+ #
+ config_data['files'].update(
+ {
+ 'global': {
+ 'log-file': '/var/log/messages',
+ 'max-size': 262144,
+ 'action-on-max-size': '/usr/sbin/logrotate /etc/logrotate.d/vyos-rsyslog',
+ 'selectors': '*.notice;local7.debug',
+ 'max-files': '5',
+ 'preserver_fqdn': False
+ }
+ }
+ )
+
+ if c.exists('global marker'):
+ config_data['files']['global']['marker'] = True
+ if c.exists('global marker interval'):
+ config_data['files']['global'][
+ 'marker-interval'] = c.return_value('global marker interval')
+ if c.exists('global facility'):
+ config_data['files']['global'][
+ 'selectors'] = generate_selectors(c, 'global facility')
+ if c.exists('global archive size'):
+ config_data['files']['global']['max-size'] = int(
+ c.return_value('global archive size')) * 1024
+ if c.exists('global archive file'):
+ config_data['files']['global'][
+ 'max-files'] = c.return_value('global archive file')
+ if c.exists('global preserve-fqdn'):
+ config_data['files']['global']['preserver_fqdn'] = True
+
+ #
+ # set system syslog file
+ #
+
+ if c.exists('file'):
+ filenames = c.list_nodes('file')
+ for filename in filenames:
+ config_data['files'].update(
+ {
+ filename: {
+ 'log-file': '/var/log/user/' + filename,
+ 'max-files': '5',
+ 'action-on-max-size': '/usr/sbin/logrotate /etc/logrotate.d/' + filename,
+ 'selectors': '*.err',
+ 'max-size': 262144
+ }
+ }
+ )
+
+ if c.exists('file ' + filename + ' facility'):
+ config_data['files'][filename]['selectors'] = generate_selectors(
+ c, 'file ' + filename + ' facility')
+ if c.exists('file ' + filename + ' archive size'):
+ config_data['files'][filename]['max-size'] = int(
+ c.return_value('file ' + filename + ' archive size')) * 1024
+ if c.exists('file ' + filename + ' archive files'):
+ config_data['files'][filename]['max-files'] = c.return_value(
+ 'file ' + filename + ' archive files')
+
+ # set system syslog console
+ if c.exists('console'):
+ config_data['console'] = {
+ '/dev/console': {
+ 'selectors': '*.err'
+ }
+ }
+
+ for f in c.list_nodes('console facility'):
+ if c.exists('console facility ' + f + ' level'):
+ config_data['console'] = {
+ '/dev/console': {
+ 'selectors': generate_selectors(c, 'console facility')
+ }
+ }
+
+ # set system syslog host
+ if c.exists('host'):
+ proto = 'udp'
+ rhosts = c.list_nodes('host')
+ for rhost in rhosts:
+ for fac in c.list_nodes('host ' + rhost + ' facility'):
+ if c.exists('host ' + rhost + ' facility ' + fac + ' protocol'):
+ proto = c.return_value(
+ 'host ' + rhost + ' facility ' + fac + ' protocol')
+
+ config_data['hosts'].update(
+ {
+ rhost: {
+ 'selectors': generate_selectors(c, 'host ' + rhost + ' facility'),
+ 'proto': proto
+ }
+ }
+ )
+
+ # set system syslog user
+ if c.exists('user'):
+ usrs = c.list_nodes('user')
+ for usr in usrs:
+ config_data['user'].update(
+ {
+ usr: {
+ 'selectors': generate_selectors(c, 'user ' + usr + ' facility')
+ }
+ }
+ )
+
+ return config_data
+
+
+def generate_selectors(c, config_node):
+# protocols and security are being mapped here
+# for backward compatibility with old configs
+# security and protocol mappings can be removed later
+ if c.is_tag(config_node):
+ nodes = c.list_nodes(config_node)
+ selectors = ""
+ for node in nodes:
+ lvl = c.return_value(config_node + ' ' + node + ' level')
+ if lvl == None:
+ lvl = "err"
+ if lvl == 'all':
+ lvl = '*'
+ if node == 'all' and node != nodes[-1]:
+ selectors += "*." + lvl + ";"
+ elif node == 'all':
+ selectors += "*." + lvl
+ elif node != nodes[-1]:
+ if node == 'protocols':
+ node = 'local7'
+ if node == 'security':
+ node = 'auth'
+ selectors += node + "." + lvl + ";"
+ else:
+ if node == 'protocols':
+ node = 'local7'
+ if node == 'security':
+ node = 'auth'
+ selectors += node + "." + lvl
+ return selectors
+
+
+def generate(c):
+ if c == None:
+ return None
+
+ tmpl = jinja2.Template(configs, trim_blocks=True)
+ config_text = tmpl.render(c)
+ with open('/etc/rsyslog.d/vyos-rsyslog.conf', 'w') as f:
+ f.write(config_text)
+
+ # eventually write for each file its own logrotate file, since size is
+ # defined it shouldn't matter
+ tmpl = jinja2.Template(logrotate_configs, trim_blocks=True)
+ config_text = tmpl.render(c)
+ with open('/etc/logrotate.d/vyos-rsyslog', 'w') as f:
+ f.write(config_text)
+
+
+def verify(c):
+ if c == None:
+ return None
+ #
+ # /etc/rsyslog.conf is generated somewhere and copied over the original (exists in /opt/vyatta/etc/rsyslog.conf)
+ # it interferes with the global logging, to make sure we are using a single base, template is enforced here
+ #
+ if not os.path.islink('/etc/rsyslog.conf'):
+ os.remove('/etc/rsyslog.conf')
+ os.symlink(
+ '/usr/share/vyos/templates/rsyslog/rsyslog.conf', '/etc/rsyslog.conf')
+
+ # /var/log/vyos-rsyslog were the old files, we may want to clean those up, but currently there
+ # is a chance that someone still needs it, so I don't automatically remove
+ # them
+
+ if c == None:
+ return None
+
+ fac = [
+ '*', 'auth', 'authpriv', 'cron', 'daemon', 'kern', 'lpr', 'mail', 'mark', 'news', 'protocols', 'security',
+ 'syslog', 'user', 'uucp', 'local0', 'local1', 'local2', 'local3', 'local4', 'local5', 'local6', 'local7']
+ lvl = ['emerg', 'alert', 'crit', 'err',
+ 'warning', 'notice', 'info', 'debug', '*']
+
+ for conf in c:
+ if c[conf]:
+ for item in c[conf]:
+ for s in c[conf][item]['selectors'].split(";"):
+ f = re.sub("\..*$", "", s)
+ if f not in fac:
+ print (c[conf])
+ raise ConfigError(
+ 'Invalid facility ' + s + ' set in ' + conf + ' ' + item)
+ l = re.sub("^.+\.", "", s)
+ if l not in lvl:
+ raise ConfigError(
+ 'Invalid logging level ' + s + ' set in ' + conf + ' ' + item)
+
+
+def apply(c):
+ if not c and os.path.exists('/var/run/rsyslogd.pid'):
+ os.system("sudo systemctl stop syslog.socket")
+ os.system("sudo systemctl stop rsyslog")
+ else:
+ if not os.path.exists('/var/run/rsyslogd.pid'):
+ os.system("sudo systemctl start rsyslog >/dev/null")
+ else:
+ os.system("sudo systemctl restart rsyslog >/dev/null")
+
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ sys.exit(1)