diff options
Diffstat (limited to 'src')
| -rwxr-xr-x | src/conf_mode/host_name.py | 249 |
1 files changed, 140 insertions, 109 deletions
diff --git a/src/conf_mode/host_name.py b/src/conf_mode/host_name.py index 3ffc7829f..bdb99a7a4 100755 --- a/src/conf_mode/host_name.py +++ b/src/conf_mode/host_name.py @@ -45,8 +45,14 @@ ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters -### modifications from other scripts should be added below +# static hostname mappings +{%- if static_host_mapping['hostnames'] %} +{% for hn in static_host_mapping['hostnames'] -%} +{{static_host_mapping['hostnames'][hn]['ipaddr']}}\t{{static_host_mapping['hostnames'][hn]['alias']}}\t{{hn}} +{% endfor -%} +{%- endif %} +### modifications from other scripts should be added below """ @@ -68,17 +74,17 @@ search {{ domain_search | join(" ") }} # borrowed from: https://github.com/donjajo/py-world/blob/master/resolvconfReader.py, THX! def get_resolvers(file): - resolvers = [] - try: - with open(file, 'r') as resolvconf: - for line in resolvconf.readlines(): - line = line.split('#',1)[0]; - line = line.rstrip(); - if 'nameserver' in line: - resolvers.append(line.split()[1]) - return resolvers - except IOError: - return [] + resolvers = [] + try: + with open(file, 'r') as resolvconf: + for line in resolvconf.readlines(): + line = line.split('#',1)[0]; + line = line.rstrip(); + if 'nameserver' in line: + resolvers.append(line.split()[1]) + return resolvers + except IOError: + return [] default_config_data = { 'hostname': 'vyos', @@ -89,124 +95,149 @@ default_config_data = { } def get_config(): - conf = Config() - hosts = copy.deepcopy(default_config_data) + conf = Config() + hosts = copy.deepcopy(default_config_data) - hosts['hostname'] = conf.return_value("system host-name") - hosts['domain_name'] = conf.return_value("system domain-name") + hosts['hostname'] = conf.return_value("system host-name") + hosts['domain_name'] = conf.return_value("system domain-name") - if hosts['domain_name']: - hosts['domain_search'].append(hosts['domain_name']) + if hosts['domain_name']: + hosts['domain_search'].append(hosts['domain_name']) - for search in conf.return_values("system domain-search domain"): - hosts['domain_search'].append(search) + for search in conf.return_values("system domain-search domain"): + hosts['domain_search'].append(search) - hosts['nameserver'] = conf.return_values("system name-server") - hosts['no_dhcp_ns'] = conf.exists('system disable-dhcp-nameservers') + hosts['nameserver'] = conf.return_values("system name-server") + hosts['no_dhcp_ns'] = conf.exists('system disable-dhcp-nameservers') - return hosts + ## system static-host-mapping + hosts['static_host_mapping'] = { 'hostnames' : {}} + + if conf.exists('system static-host-mapping host-name'): + for hn in conf.list_nodes('system static-host-mapping host-name'): + hosts['static_host_mapping']['hostnames'][hn] = { + 'ipaddr' : conf.return_value('system static-host-mapping host-name ' + hn + ' inet'), + 'alias' : '' + } + + if conf.exists('system static-host-mapping host-name ' + hn + ' alias'): + a = conf.return_values('system static-host-mapping host-name ' + hn + ' alias') + hosts['static_host_mapping']['hostnames'][hn]['alias'] = " ".join( conf.return_values('system static-host-mapping host-name ' + hn + ' alias') ) + + return hosts def verify(config): - if config is None: - return None + if config is None: + return None - # pattern $VAR(@) "^[[:alnum:]][-.[:alnum:]]*[[:alnum:]]$" ; "invalid host name $VAR(@)" - hostname_regex = re.compile("^[A-Za-z0-9][-.A-Za-z0-9]*[A-Za-z0-9]$") - if not hostname_regex.match(config['hostname']): - raise ConfigError('Invalid host name ' + config["hostname"]) + # pattern $VAR(@) "^[[:alnum:]][-.[:alnum:]]*[[:alnum:]]$" ; "invalid host name $VAR(@)" + hostname_regex = re.compile("^[A-Za-z0-9][-.A-Za-z0-9]*[A-Za-z0-9]$") + if not hostname_regex.match(config['hostname']): + raise ConfigError('Invalid host name ' + config["hostname"]) - # pattern $VAR(@) "^.{1,63}$" ; "invalid host-name length" - length = len(config['hostname']) - if length < 1 or length > 63: - raise ConfigError( - 'Invalid host-name length, must be less than 63 characters') + # pattern $VAR(@) "^.{1,63}$" ; "invalid host-name length" + length = len(config['hostname']) + if length < 1 or length > 63: + raise ConfigError('Invalid host-name length, must be less than 63 characters') - # The search list is currently limited to six domains with a total of 256 characters. - # https://linux.die.net/man/5/resolv.conf - if len(config['domain_search']) > 6: - raise ConfigError('The search list is currently limited to six domains') + # The search list is currently limited to six domains with a total of 256 characters. + # https://linux.die.net/man/5/resolv.conf + if len(config['domain_search']) > 6: + raise ConfigError('The search list is currently limited to six domains') - tmp = ' '.join(config['domain_search']) - if len(tmp) > 256: - raise ConfigError('The search list is currently limited to 256 characters') + tmp = ' '.join(config['domain_search']) + if len(tmp) > 256: + raise ConfigError('The search list is currently limited to 256 characters') - return None + # static mappings alias hostname + if config['static_host_mapping']['hostnames']: + for hn in config['static_host_mapping']['hostnames']: + for hn_alias in config['static_host_mapping']['hostnames'][hn]['alias'].split(' '): + if not hostname_regex.match(hn_alias): + raise ConfigError('Invalid hostname alias ' + hn_alias) -def generate(config): - if config is None: - return None - - # If "system disable-dhcp-nameservers" is __configured__ all DNS resolvers - # received via dhclient should not be added into the final 'resolv.conf'. - # - # We iterate over every resolver file and retrieve the received nameservers - # for later adjustment of the system nameservers - dhcp_ns = [] - for file in glob.glob('/etc/resolv.conf.dhclient-new*'): - for r in get_resolvers(file): - dhcp_ns.append(r) - - if not config['no_dhcp_ns']: - config['nameserver'] += dhcp_ns - - # We have third party scripts altering /etc/hosts, too. - # One example are the DHCP hostname update scripts thus we need to cache in - # every modification first - so changing domain-name, domain-search or hostname - # during runtime works - old_hosts = "" - with open(config_file_hosts, 'r') as f: - # Skips text before the beginning of our marker. - # NOTE: Marker __MUST__ match the one specified in config_tmpl_hosts - for line in f: - if line.strip() == '### modifications from other scripts should be added below': - break - - for line in f: - # This additional line.strip() filters empty lines - if line.strip(): - old_hosts += line - - # Add an additional newline - old_hosts += '\n' - - tmpl = jinja2.Template(config_tmpl_hosts) - config_text = tmpl.render(config) - with open(config_file_hosts, 'w') as f: - f.write(config_text) - f.write(old_hosts) - - tmpl = jinja2.Template(config_tmpl_resolv) - config_text = tmpl.render(config) - with open(config_file_resolv, 'w') as f: - f.write(config_text) + return None +def generate(config): + if config is None: return None + # If "system disable-dhcp-nameservers" is __configured__ all DNS resolvers + # received via dhclient should not be added into the final 'resolv.conf'. + # + # We iterate over every resolver file and retrieve the received nameservers + # for later adjustment of the system nameservers + dhcp_ns = [] + for file in glob.glob('/etc/resolv.conf.dhclient-new*'): + for r in get_resolvers(file): + dhcp_ns.append(r) + + if not config['no_dhcp_ns']: + config['nameserver'] += dhcp_ns + + # We have third party scripts altering /etc/hosts, too. + # One example are the DHCP hostname update scripts thus we need to cache in + # every modification first - so changing domain-name, domain-search or hostname + # during runtime works + old_hosts = "" + with open(config_file_hosts, 'r') as f: + # Skips text before the beginning of our marker. + # NOTE: Marker __MUST__ match the one specified in config_tmpl_hosts + for line in f: + if line.strip() == '### modifications from other scripts should be added below': + break + + for line in f: + # This additional line.strip() filters empty lines + if line.strip(): + old_hosts += line + + # Add an additional newline + old_hosts += '\n' + + tmpl = jinja2.Template(config_tmpl_hosts) + config_text = tmpl.render(config) + + with open(config_file_hosts, 'w') as f: + f.write(config_text) + f.write(old_hosts) + + tmpl = jinja2.Template(config_tmpl_resolv) + config_text = tmpl.render(config) + with open(config_file_resolv, 'w') as f: + f.write(config_text) + + return None + def apply(config): - if config is None: - return None + if config is None: + return None - fqdn = config['hostname'] - if config['domain_name']: - fqdn += '.' + config['domain_name'] + fqdn = config['hostname'] + if config['domain_name']: + fqdn += '.' + config['domain_name'] - os.system("hostnamectl set-hostname --static {0}".format(fqdn)) + os.system("hostnamectl set-hostname --static {0}".format(fqdn)) - # Restart services that use the hostname - os.system("systemctl restart rsyslog.service") + # Restart services that use the hostname + os.system("systemctl restart rsyslog.service") - # If SNMP is running, restart it too - if os.system("pgrep snmpd > /dev/null") == 0: - os.system("systemctl restart snmpd.service") + # If SNMP is running, restart it too + if os.system("pgrep snmpd > /dev/null") == 0: + os.system("systemctl restart snmpd.service") + + # restart pdns if it is used + if os.system("/usr/bin/rec_control ping >/dev/null") == 0: + os.system("/etc/init.d/pdns-recursor restart >/dev/null") - return None + return None if __name__ == '__main__': - try: - c = get_config() - verify(c) - generate(c) - apply(c) - except ConfigError as e: - print(e) - sys.exit(1) + try: + c = get_config() + verify(c) + generate(c) + apply(c) + except ConfigError as e: + print(e) + sys.exit(1) |