mirror of
https://gitlab.nic.cz/knot/knot-dns.git
synced 2026-02-03 18:49:28 -05:00
92 lines
2.8 KiB
Python
Executable file
92 lines
2.8 KiB
Python
Executable file
#!/usr/bin/env python3
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# vim: et ts=4 sw=4 sts=4
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#
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# Dump content of zone timers database in user readable format.
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#
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import datetime
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import lmdb
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import struct
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import sys
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class TimerDBInfo:
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def __init__(self, path):
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self._path = path
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@classmethod
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def format_timestamp(cls, timestamp):
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if timestamp == 0:
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return "never"
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else:
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return datetime.datetime.fromtimestamp(timestamp).isoformat()
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@classmethod
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def format_seconds(cls, value):
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return "%d" % value
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@classmethod
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def format_value(cls, id, value):
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timers = {
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# knot >= 1.6
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0x01: ("legacy_refresh", cls.format_timestamp),
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0x02: ("legacy_expire", cls.format_timestamp),
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0x03: ("legacy_flush", cls.format_timestamp),
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# knot >= 2.4
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0x80: ("soa_expire", cls.format_seconds),
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0x81: ("last_flush", cls.format_timestamp),
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0x82: ("last_refresh", cls.format_timestamp),
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0x83: ("next_refresh", cls.format_timestamp),
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# knot >= 2.6
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0x84: ("last_resalt", cls.format_timestamp),
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0x85: ("next_ds_check", cls.format_timestamp),
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# knot >= 2.8
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0x86: ("next_ds_push", cls.format_timestamp),
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}
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if id in timers:
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return (timers[id][0], timers[id][1](value))
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else:
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return ("%02x" % id, "%08x" % value)
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@classmethod
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def parse_dname(cls, dname):
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labels = []
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while dname[0] != 0:
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llen = dname[0]
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label = dname[1:llen+1].decode("utf-8")
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dname = dname[llen+1:]
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labels.append(label)
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return ".".join(labels)
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@classmethod
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def parse_timers(cls, binary):
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timers = {}
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while len(binary) > 0:
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chunk = binary[:9]
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binary = binary[9:]
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id, value = struct.unpack("!BQ", chunk)
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timers[id] = value
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return timers
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@classmethod
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def format_line(cls, zone, timers):
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parts = [zone]
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for id, value in timers.items():
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parts.append("%s: %s" % cls.format_value(id, value))
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return " | ".join(parts)
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def run(self):
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with lmdb.open(self._path, readonly=True) as db:
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with db.begin() as txn:
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cursor = txn.cursor()
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for key, value in cursor:
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zone = self.parse_dname(key)
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timers = self.parse_timers(value)
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print(self.format_line(zone, timers))
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if __name__ == "__main__":
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if len(sys.argv) != 2:
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print("usage: %s <timerdb-path>" % sys.argv[0], file=sys.stderr)
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sys.exit(1)
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path = sys.argv[1]
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app = TimerDBInfo(path)
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app.run()
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