-import re
-from ipaddress import IPv4Address, IPv6Address
-from typing import List, Dict, Any, Iterator, Tuple, Sequence
+# Copyright (c) 2014, Ralf Jung <post@ralfj.de>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this
+# list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+# this list of conditions and the following disclaimer in the documentation
+# and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# The views and conclusions contained in the software and documentation are those
+# of the authors and should not be interpreted as representing official policies,
+# either expressed or implied, of the FreeBSD Project.
+
+import re, datetime
+#from typing import *
second = 1
week = 7*day
REGEX_label = r'[a-zA-Z90-9]([a-zA-Z90-9-]{0,61}[a-zA-Z90-9])?' # max. 63 characters; must not start or end with hyphen
+REGEX_ipv4 = r'^\d{1,3}(\.\d{1,3}){3}$'
+REGEX_ipv6 = r'^[a-fA-F0-9]{1,4}(:[a-fA-F0-9]{1,4}){7}$'
def check_label(label: str) -> str:
+ label = str(label)
pattern = r'^{0}$'.format(REGEX_label)
if re.match(pattern, label):
return label
raise Exception(label+" is not a valid label")
def check_hostname(name: str) -> str:
+ name = str(name)
# check hostname for validity
pattern = r'^{0}(\.{0})*\.?$'.format(REGEX_label)
if re.match(pattern, name):
raise Exception(name+" is not a valid hostname")
def check_hex(data: str) -> str:
+ data = str(data)
if re.match('^[a-fA-F0-9]+$', data):
return data
raise Exception(data+" is not valid hex data")
+def check_ipv4(address: str) -> str:
+ address = str(address)
+ if re.match(REGEX_ipv4, address):
+ return address
+ raise Exception(address+" is not a valid IPv4 address")
+
+def check_ipv6(address: str) -> str:
+ address = str(address)
+ if re.match(REGEX_ipv6, address):
+ return address
+ raise Exception(address+" is not a valid IPv6 address")
+
def time(time: int) -> str:
if time == 0:
return "0"
else:
return str(time)
-def column_widths(datas: Sequence, widths: Sequence[int]):
+def column_widths(datas: 'Sequence', widths: 'Sequence[int]'):
assert len(datas) == len(widths)+1, "There must be as one more data points as widths"
result = ""
width_sum = 0
## Record types
class A:
def __init__(self, address: str) -> None:
- self._address = IPv4Address(address)
+ self._address = check_ipv4(address)
- def generate_rr(self, owner: str, zone: 'Zone') -> Any:
+ def generate_rr(self, owner: str, zone: 'Zone') -> 'Any':
return zone.RR(owner, 'A', self._address)
class AAAA:
def __init__(self, address: str) -> None:
- self._address = IPv6Address(address)
+ self._address = check_ipv6(address)
- def generate_rr(self, owner: str, zone: 'Zone') -> Any:
+ def generate_rr(self, owner: str, zone: 'Zone') -> 'Any':
return zone.RR(owner, 'AAAA', self._address)
self._priority = int(prio)
self._name = check_hostname(name)
- def generate_rr(self, owner: str, zone: 'Zone') -> Any:
+ def generate_rr(self, owner: str, zone: 'Zone') -> 'Any':
return zone.RR(owner, 'MX', '{0} {1}'.format(self._priority, zone.abs_hostname(self._name)))
self._port = int(port)
self._name = check_hostname(name)
- def generate_rr(self, owner: str, zone: 'Zone') -> Any:
+ def generate_rr(self, owner: str, zone: 'Zone') -> 'Any':
return zone.RR('_{0}._{1}.{2}'.format(self._service, self._protocol, owner), 'SRV',
'{0} {1} {2} {3}'.format(self._priority, self._weight, self._port, zone.abs_hostname(self._name)))
self._matching_type = int(matching_type)
self._data = check_hex(data)
- def generate_rr(self, owner: str, zone: 'Zone') -> Any:
+ def generate_rr(self, owner: str, zone: 'Zone') -> 'Any':
return zone.RR('_{0}._{1}.{2}'.format(self._port, self._protocol, owner), 'TLSA', '{0} {1} {2} {3}'.format(self._usage, self._selector, self._matching_type, self._data))
def __init__(self, name: str) -> None:
self._name = check_hostname(name)
- def generate_rr(self, owner: str, zone: 'Zone') -> Any:
+ def generate_rr(self, owner: str, zone: 'Zone') -> 'Any':
return zone.RR(owner, 'CNAME', zone.abs_hostname(self._name))
def __init__(self, name: str) -> None:
self._name = check_hostname(name)
- def generate_rr(self, owner: str, zone: 'Zone') -> Any:
+ def generate_rr(self, owner: str, zone: 'Zone') -> 'Any':
return zone.RR(owner, 'NS', zone.abs_hostname(self._name))
self._alg = int(alg)
self._digest = int(digest)
- def generate_rr(self, owner: str, zone: 'Zone') -> Any:
+ def generate_rr(self, owner: str, zone: 'Zone') -> 'Any':
return zone.RR(owner, 'DS', '{0} {1} {2} {3}'.format(self._tag, self._alg, self._digest, self._key))
## Higher-level classes
class Name:
- def __init__(self, *records: List[Any]) -> None:
+ def __init__(self, *records: 'List[Any]') -> None:
self._records = records
- def generate_rrs(self, owner: str, zone: 'Zone') -> Iterator:
+ def generate_rrs(self, owner: str, zone: 'Zone') -> 'Iterator':
for record in self._records:
# this could still be a list
if isinstance(record, list):
class Zone:
- def __init__(self, name: str, serialfile: str, dbfile: str, mail: str, NS: List[str],
+ def __init__(self, name: str, serialfile: str, mail: str, NS: 'List[str]', TTLs: 'Dict[str, int]',
secondary_refresh: int, secondary_retry: int, secondary_expire: int,
- NX_TTL: int = None, A_TTL: int = None, other_TTL: int = None,
- domains: Dict[str, Any] = {}) -> None:
- self._serialfile = serialfile
- self._dbfile = dbfile
-
+ domains: 'Dict[str, Any]') -> None:
if not name.endswith('.'): raise Exception("Expected an absolute hostname")
self._name = check_hostname(name)
+ self._serialfile = serialfile
+
if not mail.endswith('.'): raise Exception("Mail must be absolute, end with a dot")
atpos = mail.find('@')
if atpos < 0 or atpos > mail.find('.'): raise Exception("Mail must contain an @ before the first dot")
self._mail = check_hostname(mail.replace('@', '.', 1))
self._NS = list(map(check_hostname, NS))
+ if '' not in TTLs: raise Exception("Must give a default TTL with empty key")
+ self._TTLs = TTLs
self._refresh = secondary_refresh
self._retry = secondary_retry
self._expire = secondary_expire
- if other_TTL is None: raise Exception("Must give other_TTL")
- self._NX_TTL = NX_TTL
- self._A_TTL = self._AAAA_TTL = A_TTL
- self._other_TTL = other_TTL
-
self._domains = domains
+ def getTTL(self, recordType: str) -> str:
+ return self._TTLs.get(recordType, self._TTLs[''])
+
def RR(self, owner: str, recordType: str, data: str) -> str:
'''generate given RR, in textual representation'''
assert re.match(r'^[A-Z]+$', recordType), "got invalid record type"
- # figure out TTL
- attrname = "_"+recordType+"_TTL"
- TTL = None # type: int
- if hasattr(self, attrname):
- TTL = getattr(self, attrname)
- if TTL is None:
- TTL = self._other_TTL
- # be done
- return column_widths((self.abs_hostname(owner), time(TTL), recordType, data), (32, 8, 8))
+ return column_widths((self.abs_hostname(owner), time(self.getTTL(recordType)), recordType, data), (32, 8, 8))
def abs_hostname(self, name):
if name == '.' or name == '@':
try:
with open(self._serialfile) as f:
cur_serial = int(f.read())
- except FileNotFoundError:
+ except (OSError, IOError): # FileNotFoundError has been added in Python 3.3
pass
# increment serial
cur_serial += 1
# be done
return cur_serial
- def generate_rrs(self) -> Iterator:
+ def generate_rrs(self) -> 'Iterator':
# SOA record
serial = self.inc_serial()
yield self.RR(self._name, 'SOA',
' ; primns mail serial refresh retry expire NX_TTL').format(
NS=self.abs_hostname(self._NS[0]), mail=self._mail, serial=serial,
refresh=time(self._refresh), retry=time(self._retry), expire=time(self._expire),
- NX_TTL=time(self._NX_TTL))
+ NX_TTL=time(self.getTTL('NX')))
)
# NS records
for name in self._NS:
yield rr
def write(self) -> None:
- with open(self._dbfile, 'w') as f:
- for rr in self.generate_rrs():
- f.write(rr+"\n")
- print(rr)
+ print(";; {0} zone file, generated by zonemaker <https://www.ralfj.de/projects/zonemaker> on {1}".format(self._name, datetime.datetime.now()))
+ for rr in self.generate_rrs():
+ print(rr)
projects / zonemaker.git / blobdiff